Stainless steel is an important material that is widely used in the production of kitchenware, medical equipment, chemical equipment, ships, construction and other fields. Stainless steel has excellent corrosion resistance, high temperature resistance, aesthetics and plasticity, so it has a wide range of applications in various fields. Stainless steel welding technology is an important part of stainless steel processing, mastering the key skills and considerations of stainless steel welding technology can improve welding quality and reduce production costs.
Operating steps of stainless steel welding
Preparation
Preparation work is needed before stainless steel welding, including preparation of welding equipment, checking whether the welding equipment is normal, selecting suitable welding materials, cleaning the surface of the welding material and so on. When choosing welding equipment, you need to choose different equipment according to different welding methods, such as manual arc welding requires the selection of hand-held arc welding machine, argon arc welding requires the selection of argon arc welding machine and so on. When checking the welding equipment, you need to check whether the wiring of the equipment is correct, whether the power supply is stable and so on. When choosing the right welding material, you need to choose different materials according to different welding methods, such as handheld arc welding needs to choose welding rods, argon arc welding needs to choose argon arc welding wire and so on. When cleaning the surface of the welding material, you need to use a wire brush or sandpaper to remove the surface oxides, oil and so on.
Welding operation
When welding stainless steel, you need to master certain welding skills and precautions. First of all, it is necessary to choose the appropriate welding method. Stainless steel can use manual arc welding, argon arc welding, plasma welding, laser welding and other welding methods. Among them, argon arc welding is the most commonly used welding method, because it can ensure the quality and aesthetics of the weld. Secondly, it is necessary to master the appropriate welding parameters. The welding parameters of stainless steel are related to the welding material, thickness, welding method, etc., and need to be adjusted according to the actual situation. Welding parameters include welding current, welding voltage, welding speed and so on. Finally, attention needs to be paid to the safety of the welding process. Stainless steel welding will produce a large number of light arc and heat, easy to cause fire and explosion and other safety accidents, so you need to take appropriate safety measures, such as wearing protective glasses, gloves, masks and so on.
Post-weld treatment
After the stainless steel welding is completed, post-weld treatment is required. Post-welding treatment includes deslagging, grinding, cleaning and so on. In slag removal, you need to use a wire brush or hammer to slag off the weld. In grinding, you need to use sandpaper or sanding machine will be welded to the burr and raised part of the grinding flat. In cleaning, you need to use a cleaner to remove the oil and oxides from the weld.
Key tips and considerations for stainless steel welding technology
Selecting the right welding method
Stainless steel can be welded using a variety of welding methods, such as manual arc welding, argon arc welding, plasma welding, laser welding and so on. Among them, argon arc welding is the most commonly used welding method because it can ensure the quality and aesthetics of the weld. Manual arc welding can be used to weld thin plates and small components, but it requires a high level of skill from the operator. Plasma welding and laser welding are suitable for welding high-precision, high-demand components, but the equipment cost is higher.
Mastering the appropriate welding parameters
The welding parameters of stainless steel are related to the welding material, thickness, welding method, etc., and need to be adjusted according to the actual situation. Welding parameters include welding current, welding voltage, welding speed and so on. When choosing welding parameters, you need to choose different parameters according to different welding methods. For example, in argon arc welding, the welding current is generally selected between 50-200A, and the welding voltage is generally selected between 10-20V.
Pay attention to the safety of the welding process
Stainless steel welding produces a large number of light arcs and heat, which is easy to cause fire and explosion and other safety accidents, so it is necessary to take appropriate safety measures. First, you need to wear protective glasses, gloves, masks and other protective equipment. Secondly, you need to ensure that the welding equipment is wired correctly and the power supply is stable. Finally, need to pay attention to the welding place of ventilation and fire fighting facilities.
Precautions for post-welding treatment
Post-welding treatment includes deslagging, grinding, cleaning and so on. When removing slag, you need to use a wire brush or hammer to slag off the weld. In grinding, you need to use sandpaper or sanding machine will be welded to the burr and raised part of the grinding flat. When cleaning, you need to use cleaners to remove oil and oxides from the weld. Precautions for post-weld treatment include: do not use too hard a brush to scrub the weld to avoid scratching the surface; do not use cleaners containing chlorides to avoid corrosion; do not use cleaners containing iron to avoid contamination.