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  • Beijing Essen Welding and Cutting Exhibition.
    Beijing Essen Welding and Cutting Exhibition. Follow the Beijing Essen Welding and Cutting Exhibition official account to receive the latest news about the exhibition in real time. The 27th Beijing Essen Welding and Cutting Exhibition is now accepting booth reservations! Show information The Beijing Essen Welding and Cutting Exhibition is co-sponsored by the Chinese Mechanical Engineering Society, the Welding Branch of the Chinese Mechanical Engineering Society, the China Welding Association, the Welding Equipment Branch of the China Welding Association, the German Welding Society, and the German Essen Exhibition Company. It is a world-famous welding One of the exhibitions, it attracts tens of thousands of domestic and overseas welding industry dealers, agents, research institutions, government departments, management and procurement departments and other professionals to visit every year. Range of exhibition Previous data The 26th Beijing Essen Welding and Cutting Exhibition has a total exhibition area of 60,000 square meters and a net exhibition area of 24,507 square meters. There are 581 exhibitors from 24 countries and regions, including 31 international exhibitors. During the exhibition, a total of 50,801 visitors from 59 countries and regions came to visit. Visitors to the exhibition mainly come from machinery manufacturing, pressure vessels, automobile manufacturing, railway locomotives, oil pipelines, ships, aerospace and other industries. Domestic and foreign professional magazines, related exhibitions and other media will carry out comprehensive publicity and reporting on the exhibition through multiple channels. Exhibitor instructions The 27th Beijing·Essen Welding and Cutting Exhibition starts accepting booth reservations today Registration method Exhibition hall information The 27th Beijing Essen Welding and Cutting Exhibition August 13-16, 2024 Shanghai New International Expo Center Hall N1-N5

    2024 01/05

  • Always use approved protective equipment
    Arc welding, like any occupation in the industry, has many dangers. However, as long as the correct risk assessment is completed, careful observation is made, and protective equipment is used, the welding process is safe. Always use approved welding safety equipment. Strong light/UV radiation generated during welding The arc is the most obvious symbol of welding, but behind the brilliant lights and sparks there are dangers. Viewing an arc without protective equipment can cause permanent damage to vision, and even short-term exposure can cause surface burns to the eye, ultimately leading to what is known as "electrophthalmia" or "flash burn." Ultraviolet and infrared radiation as well as physical elements (such as hot splashes) can damage the eyes and burn unprotected skin. Eye protection during welding Welders' eyes require effective and reasonable protection, usually through the use of an approved welding helmet and welding filter lenses. Lenses (auto-darkening filters) and passive lenses (approved tinted glass welding goggles) for welding masks provide 100% protection against UV radiation. Welding helmets or welding masks need to be worn for long periods of time. They vary widely in protection levels, weights, and balance options, so be sure to choose the right model and protection level for your application and personal situation. A welding helmet or welding mask equipped with auto-darkening welding goggles can simplify and speed up the welder's work throughout the welding process. Lung protection during welding You can choose to use a welding helmet with a face shield or a welding mask. They have proper ventilation systems for clean breathing air to protect welders from daily exposure to toxic and harmful fumes and gases that are considered carcinogens, or chemicals known to cause cancer. Such ventilation systems are called welder respirators and PAPR systems. A complete respirator system consists of a filter unit, hose set and overhead unit. Welder respirator systems are officially rated based on the level of protection they provide to the wearer, i.e. how well they exclude contaminated air from the welding environment. This classification level is based on more than just the filtration efficiency of the filtration system. It is the total leakage level derived from the combined measurements of the respirator system and is called the Total Inward Leakage (TIL) Performance Level.

    2023 12/29

  • Argon welding technology - a classic element that is inseparable from bicycles
    The principles of brazing and soldering are roughly similar. That is, when two pieces of welding metal do not fuse with each other, they are joined together by the indirect joining of a third metal. However, the melting temperature of brazing is higher than Fahrenheit. Those with temperatures above 800 degrees (belonging to the scope of brazing). LUG technology Argon welding (direct welding), as far as the research and development of welding is concerned, if the air and molten pool can be separated and isolated during welding, the quality of the chemical and physical properties of the welding can be improved to be more ideal and perfect; there are many It has the function of blocking air from oxidizing the weld bead, and the air also has the ability to repel dust and impurities. We often see people holding a fairy wand and wearing a mask in factories. That is called DC or AC arc welding. Welding rods are divided into bare welding rods, thin-coated welding rods, and thick-coated welding rods according to their manufacturing categories. Coating refers to flux. The function of welding rod coating (flux) is not only to stabilize the arc, but also to generate gas in the molten pool to protect the molten pool. In argon welding, the inert gas is external and the electrodes are non-consumable. Note: Inert gas accounts for approximately 92% of the cost of argon welding. Inert gas, also known as inert gas, refers to a gas that does not spontaneously ignite, does not support combustion, and does not undergo any chemical changes, such as argon and helium. When an arc is generated, this gas immediately cooperates with arc welding to output a continuous gas to surround the arc and molten pool, which isolates the arc from the air to prevent oxidation and improves the quality of the weld bead. This welding step method is called " Gas tungsten arc welding process. According to the standard English code of AWS American Welding Society, the English abbreviation is GTAW, but it is commonly known as TIG (tungsten inert gas) or the Chinese temporary translation name is argon gas welding, etc. PS, when talking about the previous welding of the titanium alloy frame with shelf holes, the welding master said that it must be sent back to the titanium factory for processing, because the pipe must be filled with inert gas to avoid oxidation, etc., which echoes this paragraph! The reason why argon welding technology is generally popular is that it has many advantages: using argon welding technology to assemble the frame can eliminate the need for joint preparation, thus shortening the time required for the manufacturing process and reducing manufacturing costs (a good LUG is very easy to use). Expensive (see www.bikelugs.com, one or a set costs more than 50 US dollars), especially when manufacturing customized frames; Furthermore, without the weight of the LUG itself and the weight of the pouring welding material, argon Compared with the copper welding adopted by LUG, it has the capital of "lightweight" that modern people generally pursue. However, argon welding technology also has some disadvantages. First, the temperature generated is very high. Because the base metal must melt at the weld bead, the argon welding temperature will be relatively high. The mechanical properties are related to heat treatment. Generally speaking, the mechanical strength of argon welding is higher. However, because the heated pipe area is relatively small, this will reduce the mechanical function of the welded part of the pipe. Generally speaking, argon welding is more brittle than copper welding, and the joints are easier to break.

    2023 12/21

  • Our company will participate in the 27th Essen Welding and Cutting Exhibition in 2024
    Essen Welding and Cutting Exhibition (BEW) 2024, exhibition time: August 8th to August 11th, 2024, exhibition location: No. 2345 Longyang Road, Pudong New Area, Shanghai, China - Shanghai New International Expo Center, hosted by Party: China Welding Association, China Welding Association Welding Equipment Branch, Essen Exhibition Company of Germany, held once a year, exhibition area: 42,000 square meters, exhibitors: 33,894 people, the number of exhibitors and participating brands reached 993. The Essen Welding and Cutting Exhibition ("BEW" for short) is co-sponsored by the Chinese Mechanical Engineering Society, the Welding Branch of the Chinese Mechanical Engineering Society, the China Welding Association, the Welding Equipment Branch of the China Welding Association, the German Welding Society, and the German Essen Exhibition Company. One of the world's famous welding exhibitions, it attracts tens of thousands of professionals from the domestic and overseas welding industry, including dealers, agents, research institutions, government departments, management and procurement departments, to visit every year. The scale of the BEW exhibition is expanding year by year. In addition to the continuous increase of new manufacturers, well-known large enterprises such as Lincoln, Panasonic, China Electronics Huaqiang, Jinqiao, Kaiyuan Group, ABB, and Beijing Times participate in the exhibition every year, ensuring the quality and standard of the exhibition. Visitors to the exhibition mainly come from machinery manufacturing, pressure vessels, automobile manufacturing, railway locomotives, oil pipelines, ships, aerospace and other industries. More than 100 media including domestic and foreign professional magazines, related exhibitions, and the Internet conducted comprehensive publicity and reporting on the exhibition through multiple channels. As the largest and most influential event in the welding field, BEW will integrate resources to provide domestic and foreign welding manufacturers with a platform for both export and domestic trade. At the same time, it will invite government departments, experts, scholars, and manufacturers to hold new product and technology exhibitions. Lectures, as well as welding forums and welding technology seminars, provide a comprehensive communication platform for industry professionals!

    2023 12/13

  • Learn about different cuts and get different methods
    laser cutting Laser cutting uses a focused high-power density laser beam to irradiate the workpiece, causing the irradiated material to quickly melt, vaporize, ablate or reach the ignition point. At the same time, the molten material is blown away by a high-speed airflow coaxial with the beam, thereby cutting the workpiece. open. Nowadays, CO2 pulse laser is generally used, and laser cutting is one of the thermal cutting methods. plasma cutting Plasma arc cutting is a processing method that uses the heat of a high-temperature plasma arc to locally melt (and evaporate) the metal at the cut of the workpiece, and uses the momentum of high-speed plasma to remove the molten metal to form the cut. Argon arc welding Argon arc welding is a welding technology that uses argon as a protective gas. [1] Also known as argon gas shielded welding. It is to pass argon protective gas around the arc welding to isolate the air from the welding area and prevent oxidation of the welding area. Argon arc welding technology is based on the principle of ordinary arc welding, using argon gas to protect metal welding materials, and using high current to melt the welding materials into a liquid state on the base material to be welded to form a molten pool, so that the metal to be welded and the welding material are A welding technology that achieves metallurgical bonding of materials. Since argon gas is continuously supplied during high-temperature molten welding, the welding material cannot come into contact with oxygen in the air, thus preventing the oxidation of the welding material. Therefore, stainless steel and iron hardware metals can be welded .

    2023 12/02

  • What is argon arc welding?
    Argon arc welding is a welding technology that uses argon as a protective gas. [1] Also called argon gas shielded welding. It is to pass argon protective gas around the arc welding to isolate the air from the welding area and prevent oxidation of the welding area. Argon arc welding technology is based on the principle of ordinary arc welding, using argon gas to protect metal welding materials, and using high current to melt the welding materials into a liquid state on the base material to be welded to form a molten pool, so that the metal to be welded and the welding material are A welding technology that achieves metallurgical bonding of materials. Since argon gas is continuously supplied during high-temperature molten welding, the welding material cannot come into contact with oxygen in the air, thus preventing the oxidation of the welding material. Therefore, stainless steel and iron hardware metals can be welded . efficient The current density is large, the heat is concentrated, the deposition rate is high, and the welding speed is fast. In addition, it is easy to strike an arc. Protection needs to be strengthened because the arc light is strong and the smoke is large, so protection must be strengthened. Protective gas The most commonly used inert gas is argon. It is a colorless and odorless gas with a content of 0.935% in air (calculated by volume). The boiling point of argon is -186°C, which is between the boiling points of oxygen and helium. Argon is a by-product of oxygen plants fractionating liquid air to produce oxygen. Bottled argon is used for welding in China, and its filling pressure is 15MPa at room temperature. The cylinder is painted gray and marked "Argon". The chemical composition requirements of pure argon are: Ar ≥ 99.99%; He ≤ 0.01%; O2 ≤ 0.0015%; H2 ≤ 0.0005%; total carbon content ≤ 0.001%; moisture ≤ 30mg/m2. Argon is an ideal protective gas, which is 25% denser than air. It is helpful for protecting the welding arc during flat welding and reducing the consumption of protective gas. Argon is a gas with very inactive chemical properties. It does not react chemically with metals even at high temperatures, so there is no oxidation and burning loss of alloy elements and a series of problems caused by it. Argon is also insoluble in liquid metal and will not cause porosity. Argon is a monatomic gas that exists in an atomic state and has no molecular decomposition or atomic endothermy at high temperatures. The specific heat capacity and thermal conductivity of argon are small, that is, the amount of argon absorbed is small and the heat transfer is small. The heat in the arc is not easily lost, which makes the welding arc burn stably and concentrates the heat, which is beneficial to the welding process. The disadvantage of argon is its higher ionization potential. When the arc space is filled with argon gas, it is more difficult to ignite the arc, but once the arc is ignited, it is very stable.

    2023 11/17

  • Precautions for argon arc welding
    1. Ventilation measures (1) The argon arc welding work site must have good ventilation devices to discharge harmful gases and smoke. In addition to factory ventilation, several axial flow fans can be installed to exhaust air in places where the welding workload is heavy and welding machines are concentrated. (2) In addition, local ventilation measures can be used to remove harmful gases around the arc, such as open arc fume exhaust hoods, fume exhaust welding guns, lightweight small fans, etc. 2. Protective measures against radiation Use cerium tungsten electrodes with extremely low radiation dose as much as possible. When processing thorium tungsten electrodes and cerium tungsten electrodes, sealed or ventilated grinding wheels should be used for grinding. Operators should wear masks, gloves and other personal protective equipment, and wash hands and faces after processing. Thorium tungsten electrodes and cerium tungsten electrodes should be stored in aluminum boxes. 3. Measures to protect against high frequency 4. Other personal protective measures During argon arc welding, due to the strong effects of ozone and ultraviolet rays, it is advisable to wear non-cotton work clothes (such as acid-resistant cloth, tussah silk, etc.). When welding in a container and local ventilation cannot be used, personal protective measures such as air-supply helmets, air-supply masks or respirators can be used.

    2023 10/23

  • What are the different types of electric welding?
    According to different joining methods, welding can be roughly divided into three categories: fusion welding, pressure welding, and brazing. 1. Fusion welding: In welding, the most common method is "fusion welding". During fusion welding, the base metal and welding material or one of them needs to be melted to achieve welding. A typical fusion welding is "arc welding". Welding methods such as arc welding and laser welding are often used for automatic welding by robots. In complex production lines such as automobile assembly lines, robot welding and manual welding are used depending on the characteristics and conditions of the process. 2. Pressure welding uses mechanical friction, pressure, current, etc. to melt and join the base materials. It is divided into "friction crimping method", "gas crimping method" and "resistance spot welding". The "friction and crimping method" utilizes the plasticity of the material, that is, after applying a certain force to the material and deforming it, the deformation will be maintained even if no force is applied; the "gas crimping method" uses the base material to deform. They are pressed together and then heated with gas to achieve joining; "resistance point welding" is to overlap two base materials to be joined and energize them, using resistance heating as a heat source to join. 3. Brazing is the use of welding materials (brazing materials) whose melting temperature (melting point) is lower than that of the base metal. Flux is added to the brazing material in order to achieve a good bonding state without melting the base metal. Extension: Not only should the melting temperature of the brazing material be lower than that of the base material, but it must also have excellent affinity. The atoms of the melted brazing material must be able to combine with the atoms of the base material. What are the welding methods? Comparison of welding technology classification. Welding technology is mainly used on metal base materials. Commonly used ones include arc welding, argon arc welding, CO2 shielded welding, oxygen-acetylene welding, and laser welding.

    2023 10/11

  • What are the safety precautions for gas shielded welding?
    In industrial production, different welding methods are chosen for different plates, such as the well-known electric welding and gas-shielded welding. Regardless of which method is used, operators need to pay extra attention to avoid accidents. So, what are the safety precautions for gas shielded welding? Let the editor introduce it to you below: The welding specifications of CO2 welding mainly include: welding current, arc voltage, welding speed and gas flow. These parameters have a great impact on the heating and melting of the welding wire and the formation of the weld. When arc closing in CO2 welding, the dry extension length should be kept unchanged, and the burning point should be pulled to the edge of the molten pool to stop the arc. The welding machine will automatically complete the arc closing process of burnback, ball elimination, and delayed gas protection. In addition, the welding voltage of gas shielded welding must form a good match with the current. Welding voltage that is too high or too low will cause spatter. The welding voltage should increase as the welding current increases, and should decrease as the welding current decreases. The optimal welding voltage is generally between 1-2V, so the welding voltage should be carefully adjusted. Specific operational precautions also include the following points: 1. Before using the welding torch, you must first check the radiation absorption performance and air tightness. The connection parts of the welding torch, the gas channel and the regulating valve must not be stained with grease. 2. When the welding torch is ignited, the acetylene valve should be opened first to ignite, and then the oxygen valve should be opened to adjust the flame; when turning off the flame, the acetylene should be turned off first, and then the oxygen. When out of use, it is strictly prohibited to permanently connect the welding torch, hose and gas source. 3. When using a cutting torch, you should clean the paint, rust, etc. on the working surface, and do not work on the cement floor to prevent rust water and cement from exploding at high temperatures and injuring people. 4. When igniting the cutting torch, do an ignition test first to check whether the cutting nozzle is installed properly. When ceasefire, acetylene should be turned off first and then oxygen.

    2023 09/27

  • In the development of modern electronic welding technology, the application advantages of laser soldering technology
    With the rapid development of modern electronic information technology, integrated circuit chip packaging forms are emerging in endlessly, and the packaging density is getting higher and higher, which has greatly promoted the development of electronic products in the direction of multi-function, high performance, high reliability and low cost. To date, through-hole technology (THT) and surface mount technology (SMT) are common in electronics assembly manufacturing. They have been widely used in PCBA process and have their own advantages or technical fields. As electronic assemblies become increasingly dense, some through-hole inserts cannot be soldered using traditional wave soldering. The emergence of selective laser soldering technology seems to be a special form of selective soldering technology developed to meet the development requirements of through-hole component welding. Its process can be used as a replacement for wave soldering, and can be used individually The process parameters of solder joints are optimized to achieve the best welding quality. The evolution of soldering processes for through-hole components In the development process of modern electronic welding technology, it has experienced two historic changes: The first time is the transition from through-hole soldering technology to surface mount soldering technology; the second time is the transition we are experiencing from lead soldering technology to lead-free soldering technology. Laser welding of through hole components The evolution of welding technology directly brings two results: First, there are fewer and fewer through-hole components that need to be welded on circuit boards; second, through-hole components (especially large heat capacity or fine-pitch components) are becoming more and more difficult to weld, especially for lead-free and high-quality components. Products with reliability requirements. Let`s take a look at the new challenges facing the global electronics assembly industry: Global competition forces manufacturers to bring products to the market in a shorter time to meet the changing requirements of customers; seasonal changes in product demand require flexible manufacturing concepts; global competition forces manufacturers to improve quality on the premise of Reduce operating costs; lead-free production is the general trend. The above challenges are naturally reflected in the selection of production methods and equipment, which is also the main reason why selective laser soldering has developed faster than other welding methods in recent years; of course, the arrival of the lead-free era also promotes its development another important factor. In the development of modern electronic welding technology, the application advantages of laser soldering technology Laser soldering machine is one of the process equipment used in manufacturing various electronic components. This process involves soldering specific electronic components to printed circuit boards without affecting other areas of the circuit board, usually involving circuit boards. It is generally completed through three processes of wetting, diffusion and metallurgy. The solder gradually diffuses to the pad metal on the circuit board, forming an alloy layer on the contact surface between the solder and the pad metal, so that the two are firmly bonded. Through the equipment programming device, selective welding is completed for each solder joint in turn. Advantages of laser soldering machines in electronic manufacturing In the development of modern electronic welding technology, the application advantages of laser soldering technology 1. Non-contact processing, no stress, no pollution; 2. Laser soldering is of high quality and consistency, with full solder joints and no tin beads remaining; 3. Laser soldering can facilitate automation; 4. The equipment has low energy consumption, is energy-saving and environmentally friendly, has low consumable costs and low maintenance costs; 5. Compatible with larger pads and precision pads, the smallest pad size is up to 60um, making precision welding easy to achieve; 6. The process is simple and can be completed in one welding operation. There is no need to spray/print flux and subsequent cleaning processes.

    2023 09/21

  • Carbon dioxide gas shielded welding, what you should know
    Carbon dioxide gas shielded welding is one of the welding methods. It is a method of welding using carbon dioxide gas as a shielding gas. In terms of application, the operation is simple and suitable for automatic welding and all-round welding. There should be no wind when welding, so it is suitable for indoor operations. Because it is low cost and easy to produce carbon dioxide gas, it is widely used in various large and small enterprises. The shielding gas of carbon dioxide gas shielded arc welding (CO2 welding for short) is carbon dioxide (sometimes a mixed gas of CO2+Ar is used). Due to the special influence of the thermophysical properties of carbon dioxide gas, when using conventional welding power sources, the molten metal at the end of the welding wire cannot form a balanced axial free transition, and short circuit and droplet necking and blasting are usually required. Therefore, unlike MIG welding, free There is more splash than transition. However, if a high-quality welding machine is used and the parameters are appropriately selected, a very stable welding process can be achieved and spatter can be reduced to a minimum. Due to the low price of the shielding gas used, the welding seam is well formed when short-circuit transition is used, and the use of welding wire containing deoxidizer can obtain high-quality welding joints without internal defects. Therefore, this welding method has become one of the most important welding methods for ferrous metal materials. welding skills 1. Flat welding is divided into two types: right welding method and left welding method (the welding gun moves from right to left) according to the movement direction of the welding gun. In the right-hand welding method, the molten pool is well protected, the heat is fully utilized, and the weld shape is fuller; however, in the right-hand welding method, it is difficult to observe the welding direction and it is easy to bias the welding. Generally, the left welding method is commonly used. 2. In the left-hand welding method, the arc has a preheating effect on the base metal, the melting width increases, the weld is formed flatter, and the welding direction can be seen clearly, and it is not easy to deflect the welding. The inclination angle of the welding gun is about 10 to 20 degrees. 3. The welding wire, welding port and the surrounding 10~20mm range must be kept clean, and foreign matter such as rust, oil, water and paint that may affect the welding quality must not be allowed. 4. Arc ignition. Generally, direct short-circuit arc ignition is used. If the welding wire is in too close contact with the weldment or the contact is poor, it will cause the welding wire to explode in segments. Therefore, before arc striking, the distance between the welding wire end and the weldment is generally kept 2 to 3 mm, and attention should be paid to cutting off the spherical welding wire at the wire end. When igniting the arc, choose a good position and use the backward arc ignition method. 5. Close the arc. When closing the arc, the arc crater must be filled. The welding gun should stop for a moment at the closing arc and continue to provide gas protection. Then slowly lift the welding handle and make the first layer of weld overlap 20~50mm thick at the joint; it should not be lifted immediately. Welding gun, otherwise arc craters will easily form pores. 6. Welding current and arc voltage are key process parameters. In order to make the weld well formed, reduce spatter, and reduce welding defects, the arc voltage and welding current must match each other. During low current welding, if the arc voltage is too high, metal spatter will increase; if the arc voltage is too low, the welding wire will easily extend into the molten pool, making the arc unstable. During high-current welding, if the arc voltage is too high, metal spatter will increase and pores will easily occur; if the voltage is too low, the arc will be too short, resulting in poor weld formation. 7. Welding current is the main factor in determining penetration depth. As the current increases, the penetration depth and deposition speed increase, and the penetration width also increases slightly. The faster the wire feeding speed, the greater the welding current, which is basically a proportional relationship. When the welding current is too large, the molten pool will be too large and the weld shape will deteriorate. 8. As the arc voltage increases, the melting width increases significantly, while the weld reinforcement and penetration depth decrease slightly, and the mechanical properties of the weld are reduced. If the arc voltage is too high, weld pores and spatter will occur; if the arc voltage is too low, the welding wire will be inserted into the molten pool, causing the arc to be unstable and affecting the weld formation. 9. The increase in the extension length of the welding wire will reduce the welding current, reduce the penetration depth, and increase the width of the weld. When the extension length of the welding wire is too long, it is easy to form incomplete penetration and fusion, increase spatter, weaken protection, and form pores; when the extension length of the welding wire is too short, it will hinder the observation of the molten pool, and the nozzle is easily blocked by spatter, affecting protection. Form pores. In order to reduce spatter, try to keep the extension length of the welding wire as small as possible, but as the welding current increases, the extension length should be appropriately increased. 10. Gas flow directly affects the gas protection effect. If the gas flow rate is too small, defects such as pores will easily occur in the weld. When the gas flow rate is too large, not only is gas wasted, but the welding seam also forms oxide scale due to enhanced oxidation, reducing the quality of the welding seam. 11. If the welding speed is too fast, the gas protection effect will be destroyed, the weld will be poorly formed, and the weld will cool too quickly, resulting in reduced weld plasticity and toughness. If the welding speed is too slow, the weld seam will burn through and form a coarse weld seam structure. 12. It is forbidden for the electric fan to face the welding port, which will affect the protective gas. 13. When welding, the handle should be steady and the welding speed should be even. The main reason for the occurrence of welding nodules is uneven operation of the welding gun, which causes the temperature of the molten pool to be too high and the liquid metal to condense and fall slowly, thus forming metal nodules on the surface of the weld. Advantages of carbon dioxide gas shielded welding 1. Low welding cost. Its cost is only 40~50% of that of submerged arc welding and manual arc welding. 2. High production efficiency. Its productivity is 1 to 4 times that of manual arc welding. 3. Easy to operate. Open arc, no limit to the thickness of the workpiece, can be welded in all positions and can be welded downward. 4. The weld has high crack resistance. Welds are low in hydrogen and contain less nitrogen. 5. The deformation after welding is small. The angular deformation is five thousandths and the unevenness is only three thousandths. 6. Welding spatter is small. When using ultra-low carbon alloy wire or flux-cored wire, or adding Ar to CO2, welding spatter can be reduced.

    2023 09/12

  • Advantages of argon arc welding
    The reason why argon arc welding has been widely used is mainly because it has the following advantages. 1. Argon gas protection can isolate the adverse effects of oxygen, nitrogen, hydrogen, etc. in the air on the arc and molten pool, reduce the burning loss of alloy elements, and obtain dense, splash free, and high-quality welding joints; 2. The arc combustion of argon arc welding is stable, with concentrated heat, high arc column temperature, high welding production efficiency, narrow heat affected zone, and low stress, deformation, and crack tendency of the welded parts; 3. Argon arc welding is an open arc welding method, which is easy to operate and observe; 4. Low electrode loss, easy to maintain arc length, and no flux or coating during welding, making it easy to achieve mechanization and automation; 5. Argon arc welding can weld almost all metals, especially some refractory and easily oxidized metals such as magnesium, titanium, molybdenum, zirconium, aluminum, and their alloys; 6. Not limited by the position of the welding element, full position welding can be carried out. Disadvantages of argon arc welding 1. Due to the large heat affected area, argon arc welding often causes defects such as deformation, high hardness, sand holes, local annealing, cracking, pinholes, wear, scratches, undercuts, insufficient bonding force, and internal stress damage to the workpiece after repair. Especially in the repair process of small defects in precision castings, they protrude on the surface. In the field of repairing defects in precision castings, cold welding machines can be used instead of argon arc welding. Due to the small heat release of cold welding machines, they effectively overcome the shortcomings of argon arc welding and make up for the repair difficulties of precision castings. 2. Compared with electrode arc welding, argon arc welding has a higher degree of harm to the human body. The current density of argon arc welding is high, and the light emitted is relatively strong. The ultraviolet radiation generated by its arc is about 5-30 times that of ordinary electrode arc welding, and the infrared radiation is about 1-1.5 times that of electrode arc welding. During welding, the ozone content generated is relatively high. Therefore, it is recommended to choose a place with good air circulation for construction, otherwise it will cause significant harm to the body. 3. For metals with low melting points and easy evaporation, such as lead, tin, and zinc, welding is more difficult. Application of argon arc welding Argon arc welding is suitable for welding non ferrous metals and alloy steels that are prone to oxidation (mainly using Al, Mg, Ti and their alloys for welding and stainless steel); Suitable for single sided welding and double sided forming, such as backing welding and pipe welding; Tungsten argon arc welding is also suitable for thin plate welding.

    2023 08/29

  • www.edaweld.com
    In addition to our website www.jsedafeld. com, we also have a new website that is more comprehensive in content and better at finding the products we are looking for. We hope everyone can take a look and get to know us better. CHANGZHOU EDAWELD TRADING Co., Ltd. was founded in 2017. It is a new trading company based on our EDAWELD CO., LTD. what is our factory. EDAWELD CO., LTD. is one of leading manufacturer in China. Our factory has 10 years experience to do TIG Welding Torch, Mig Welding Torch, plasma welding torches and their spare parts. In order to increase the type of product sales in welding industry, better meet customer needs, in 2017 we created a trading company to collection of various types of welding products. Now we have best suppliers for Welding Machines, Welding Wires, Welding Helmets, Pneumatic Tools and other Welding auxiliary tools. CHANGZHOU EDAWELD TRADING Co., Ltd. is a preferable professional partner for the customers looking for reliable supplier of welding solutions with best customer service form Far East. We offer to our customers: - complete offer of welding, abrasive and personal safety products - qualified staff with easy communication in English - modern information systems implemented - developed and efficient logistics organization We created a complete range of welding products and accessories, which helps our partners to find [cost alternative" and high quality goods as the alternative to international well-known manufacturers. Our company own 50 workers and 3 research engineers.Our products are already exported to Asia, Europe, the Middle East and north American with excellent quality. All our staff are striving to realize the aim of "Create Chinese Brand ,Build First-Class Enterprise ",with the spirit of "Being honest and pragmatic ,making pioneering efforts and seeking perfection with persistency." Company commitment: thinking what customers think, worrying what customers worry, in time delivery and high tracking service.

    2023 08/22

  • What is MIG/MAG welding about?
    MIG/MAG welding (metal inert gas/active gas shielded welding): MIG welding principle - an arc welding method that uses inert gas as the shielding gas and welding wire as the melting electrode. The protective gas is usually argon or helium or their mixture. MIG uses inert gases, while MAG adds a small amount of active gases such as oxygen, carbon dioxide, etc. to the inert gases. Main characteristics - good welding quality; High welding productivity; No deoxygenation and dehydrogenation reaction (easy to form welding defects, particularly strict requirements for surface cleaning of welding materials); Poor wind resistance; The welding equipment is complex. Application - It can weld almost all metal materials, mainly used for the welding of non-ferrous metals and their alloys, stainless steel, and certain alloy steels (too expensive). The thinnest thickness is about 1 millimeter, and the larger thickness is basically unrestricted.

    2023 08/17

  • How to operate argon arc welding
    1. Preparation: Ensure that the welding area is clean, free of oil and impurities, and thoroughly clean it. Select appropriate welding equipment, including TIG welding machines, argon cylinders, TIG welding guns, electrodes, etc. 2. Set up welding equipment: Connect the TIG welding machine to the power source and ensure that the power is turned off. Connect the argon gas cylinder to the welding machine and open the valve of the argon gas cylinder. Set appropriate current, electrode polarity, and argon gas flow according to welding requirements. 3. Preparation of electrodes: Select an appropriate type of tungsten electrode (usually tungsten electrode containing 2% molybdenum can provide better arc stability). Prepare the tungsten electrode by grinding or sharpening to make its end face flat, generally recommended to be tapered. 4. Determine welding position and posture: Determine the welding position and angle, use welding fixtures or magnetic brackets to fix the workpiece as needed, and choose the appropriate welding posture, usually holding or supporting the welding gun. 5. Start welding: Turn on the welding machine power and adjust the current to the appropriate level. Press and hold the trigger of the welding gun to activate the argon gas flow and establish an argon protective atmosphere. Maintain the welding gun at the correct distance and angle to maintain appropriate contact between the tungsten electrode and the weld seam. By controlling the movement speed of the welding gun and workpiece, a stable arc is formed and welding is carried out. Maintain the stability of the welding gun, continue welding along the weld seam, maintain appropriate welding speed and path, release the trigger of the welding gun when it is necessary to stop welding or change the position of the welding gun, and wait for the arc to extinguish before turning off the argon gas flow. 6. Welding completion: After completing the welding, wait for the weld to cool down and check the welding quality. Clean the residue and oxide layer in the welding area to ensure that the welding area is clean. When conducting argon arc welding, it is necessary to pay attention to appropriate ventilation: argon is a colorless and odorless gas, but it may cause suffocation at high concentrations. Ensure sufficient ventilation in the welding area to avoid the accumulation of argon gas, and provide good air circulation by installing ventilation equipment or conducting welding outdoors.

    2023 08/09

  • Carbon dioxide firearm.Argon arc welding gun
    What is the difference between carbon dioxide welding guns and argon arc welding guns? 1. The gases used are different: the former is Ar gas, and the latter is CO2. 2. Different uses. The former can weld almost left and right welded structures, while the latter cannot be used for pressure vessels. 3. Different welding materials: the former is divided into tungsten argon arc welding and consumable argon arc welding; The latter only has a melting pole. 4. One is the welding wire used as an electrode, which is continuously melted and filled into the molten pool, and condensed to form a weld seam; Another method is to use shielding gas. With the application of consumable argon arc welding technology, shielding gas has developed from a single argon gas to a wide range of mixed gases. For example, when argon or helium is used as the shielding gas, it is called consumable inert gas arc welding (internationally referred to as MIG welding). 5. When a mixture of inert gas and oxidizing gas (O2, CO2) is used as the shielding gas, or when a mixture of CO2 gas or CO2+O2 is used as the shielding gas, it is collectively referred to as consumable active gas arc welding (internationally referred to as MAG welding).

    2023 08/08

  • Advantages of plasma welding machines
    At present, in the field of welding technology, plasma welding technology is involved, especially the multifunctional plasma of the welding machine, which is connected to the operation of the movable switch rod, greatly simplifying the structure of the equipment. Actually, plasma welding machines should be known, but knowing how to use them for production, what kind of performance should they have? Friends who have used plasma welding machines may want to know the feeling of plasma welding machines. 1. Technical advantages of plasma welding machines For plasma welding machines, their application efficiency is still very high and can be used in a relatively short period of time. The coating has been made, so the help in improving application efficiency cannot be ignored. In addition, in plasma welding machines, even if you are not familiar with plasma welding machines, you can use them for more convenient operation. Another point is that its production capacity is relatively large, so it can be produced in large quantities in a short period of time, which also shows the ability of plasma welding machines. 2. How is the plasma welding machine used? When using a plasma welding machine for processing, it is natural to pay more attention to its technology. A true plasma welding machine is relatively simple for spray welding, and the methods used in processing are also relatively simple. If the surface can be treated, the effect is still good, mainly proving the performance of the plasma welding machine. Of course, in the company's operation process, we should also see how the benefits of the plasma welding machine are reflected. The new plasma welding machine is now composed of a base with a double-edged steel clamping device and a welding frame driven by a driver. The lower part of the welding frame is equipped with a welding support wheel, and the outer side of the welding frame is equipped with a welding support wheel. The support wheel is connected to the control system by a steering wheel, a double-edged steel clamping device, a driving unit and circuit, and a control roller. The top of the welding frame is equipped with a welding gun frame, the welding gun is controlled, and the circuit is connected to the control system.

    2023 07/28

  • THE 24th BEIJING ESSEN WELDING & CUTTING FAIR
    BeijingEssen Welding & Cutting Fair! Exhibition introduction: Beijing Essen Welding and Cutting Exhibition (BEW) is co-sponsored by China Institute of Mechanical Engineering, China Institute of Mechanical Engineering Welding Branch, China Welding Association, China Welding Association Welding Equipment Branch, Germany Welding Society and Germany Essen Exhibition Company. It is one of the world famous welding exhibitions and attracts tens of thousands of distributors and agents in the welding industry at home and abroad every year. Professionals from research institutes, government departments, management and procurement departments came to visit. BEW has successfully held 23 sessions, the scale of the exhibition has been expanding year by year. In addition to the increasing number of new manufacturers, Lincoln, Panasonic, China Telecom Huaqiang, Jinqiao, Kaiyuan Group, ABB, Beijing Times and other well-known large enterprises participate in the exhibition every year to ensure the quality and level of the exhibition. The 23rd Beijing Essen Welding and Cutting Exhibition covers a total area of 96,000 square meters with a net exhibition area of 41,991 square meters. There are 993 exhibitors from 24 countries and regions, including 117 international exhibitors. During the exhibition, 33,849 visitors from 63 countries and regions visited the exhibition. The exhibition audience mainly comes from machinery manufacturing, pressure vessel, automobile manufacturing, railway locomotive, oil pipeline, ship, aerospace and other industries. More than 100 domestic and foreign professional magazines, related exhibitions, the Internet and other media all-round publicity and coverage of the exhibition. As the largest and most influential welding event, BEW will integrate resources to provide a platform Exhibition for both domestic and foreign welding manufacturers to be able to export as well as domestic trade. At the same time, government departments, experts, scholars and manufacturers will be invited to hold technical lectures on new products, as well as welding forums and welding technology seminars to provide a comprehensive exchange platform for the industry. Company introduction: EDAWELD Co.,Ltd was founded in 2008,which is one of leading manufacturer and trading company in China. Our factory has 10 years experience to do TIG Welding Torch, Mig Welding Torch, plasma welding torches and their spare parts. The new factory covers an area of more than 10000 square meters .There are 50 workers and 3 research engineers.Our products are already exported to Asia, Europe, the Middle East and north American with excellent quality. In order to meet customers` requirements and improve product quality, our company has already realized mechanical processing numerical control automatization production, and been committed to manufacturing products with best quality. Our company adopts modern management mode and devotes itself to new high performance design and production of welding&cutting equipments, with continuous technique advantages innovation .All our staff are striving to realize the aim of "Create Chinese Brand ,Build First-Class Enterprise ",with the spirit of "Being honest and pragmatic ,making pioneering efforts and seeking perfection with persistency." Company commitment: thinking what customers think, worrying what customers worry, in time delivery and high tracking service. The 24th Beijing Essen Welding and Cutting Exhibition is scheduled to be held in Shanghai New International Expo Center from June 25 to 28, 2019.Our booth number is W2801. Welcome your attention.

    2023 07/28

  • The 32th China Welding Exposition
    Chinese welding fair was founded in 1985, is the former State Ministry of machinery industry under the leadership of the Chengdu electric welding machine research institute and Chinese Electrical Industry Association jointly organized, is Chinese welding industry's oldest and most influential and the most powerful independent brand welding exhibition, reputation in the industry Chinese. It has become a Chinese welding brand exhibition, which combines exhibition demonstration, academic exchange, welder competition, industry activity and famous salon. Large scale and wide impact Since Chinese welding Expo has been successfully, in the famous city of Beijing, Shanghai and Tianjin held 28 sessions, a total of about 500 thousand people received domestic appearance, from the United States, Japan, Australia, South Korea, Malaysia and other countries and many domestic welding and Cutting Equipment development, production and sales of manufacturers of more than 3000 participated in the exhibition. Over the past 30 years, a large number of advanced welding and cutting equipment and equipment from home and abroad have been displayed, which has made solid contributions to the technological progress and development of China's welding and cutting industry, and has also promoted the mutual communication between China and other countries. The growth process of the welding fair is the development history of the whole industry in the past 30 years. From the beginning of the twenty-eighth, the China Welding fair was held annually in the spring. At the same time, the Expo has formed close cooperation with China International Hardware Fair (the world's largest professional hardware brand exhibition). Meanwhile, it shared the same hall and shared resources from the same period. From the two session ended, the radiation effect was formed, one plus one is far greater than two. Industry grand meeting, perfect deduction China welding welding show fair Chinese as the largest and most professional, each session of the general assembly are subject to domestic and foreign manufacturers and users of concern, not only reflect the level and trend of development of modern welding assembly, is also a fusion at home and abroad the latest welding technology and equipment procurement market has become rich, at the same time a year the party among production, sales, research, development, teaching and users, attracts more and more attention and participation of Tongren welding industry, welding industry has become China's "fair". Specific arrangements for the China Welding Fair Time: every spring March Location: Shanghai Exhibition scope: all kinds of arc welding power supply, special welding equipment, welding equipment, various cutting equipment, large-scale production line processing, welding, welding robot, welding equipment, field welding auxiliary equipment, Welding Torch, welding torch, welding parts, wire and cable, welding rod, welding wire, welding flux, welding, weld quality inspection instrument, hardware related tools and equipment, all kinds of welding equipment for environmental protection. Exhibitors: domestic and foreign manufacturers, research institutes, tertiary institutions, distributors, foreign agents and Sino foreign joint ventures in welding, cutting and related fields. Supporting activities: academic exchanges, various lectures, welding forums, opening ceremonies, social reception, association association activities, new product launches, excellent welders exhibition and online welding exhibition.

    2023 07/28

  • Mig Welding Torch
    In carbon dioxide gas shielded welding, the part that performs welding is called a Welding Torch. In carbon dioxide gas shielded welding, the part that performs welding is called a welding torch. Can be divided into: 1. **formula. 2. Goose neck style. Welding torch working principle: The welding torch uses oxyacetylene gas (or oxygen liquefied gas) flame to heat the ends of the rebar to the molten state, the attachments go with the droplets, and when the end is convex, it immediately pressurizes and extrudes the molten metal. Make the reinforcement firmly connected. The welding torch is suitable for transverse welding, vertical welding, etc. in any direction. The welding steel is 12-38mm in diameter. Welding torch features: The torch is small and flexible, easy to use and simple Welding torch welding effect is qualified, welding safety, speed, The torch is reliable in performance, easy to maintain, and easy to adjust. The torch does not use electricity, saves steel, and has a small investment in equipment. Welding gun pressure welding can easily complete the welding work of flash welding and electroslag welding equipment, and the quality and efficiency are better than the latter two sets of equipment. Welding gun classification: Three cathode torch WP argon arc welding torch argon arc welding torch CO2 torch CO2 torch flame torch which gas shielded welding torch is divided into: Panasonic, OTC, Bin Cai Seoul? The three series of argon arc welding torches are mainly divided into three series: gas and electricity integration, gas and electricity separation, and water cooling.

    2023 07/28

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