Stainless steel sheets are easy to burn through and deform when welding, so is there any solution?

 Stainless steel sheets are easy to burn through and deform when welding, so is there any solution?

　　The main measures to solve the burn-through and deformation of stainless steel sheets during welding are:

　　1. Strictly control the heat input on the welding joint, select the appropriate welding method and process parameters (mainly welding current, arc voltage, welding speed).

　　2. Generally, smaller nozzles are generally used for thin plate welding, but we recommend using larger nozzle diameters as much as possible, so that the weld seam protection surface during welding will be larger, and the air can be effectively isolated for a longer period of time, so that the weld seam can be formed better Strong antioxidant capacity.

　　3. When using φ1.5 cerium tungsten rod, the sharpness of the grinding should be sharper, and the length of the tungsten rod protruding from the nozzle should be as long as possible, which will make the base metal melt faster, that is to say, the melting temperature The faster the rise, the more concentrated the temperature, so that we can melt the position that needs to be melted as fast as possible, and will not let the temperature of more matrix rise, so that the area where the internal stress of the material changes becomes smaller, and eventually The deformation of the material will also be reduced.

　　4. The assembly size should be accurate and the interface gap should be as small as possible. If the gap is slightly larger, it is easy to burn through, or form a larger weld bump.

　　5. Hardcover clamps must be used, and the clamping force is balanced and even. The key point of welding stainless steel sheet is to strictly control the line energy on the welding joint, and try to reduce the heat input as much as possible under the premise that the welding can be completed, so as to reduce the heat-affected zone and avoid the occurrence of the above defects.

　　6. Choosing a reasonable welding sequence is particularly important for controlling the residual deformation of welding. For the structure of symmetrical welds, symmetrical welding should be used as much as possible; for asymmetrical structures, the one with fewer welds welded first and more welds welded later side. The deformation of the rear weld is sufficient to eliminate the deformation of the front side so that the overall deformation is reduced.

　　7. The best thing for stainless steel sheet is laser welding 0.1MM can be welded, the size of the laser light spot can be adjusted arbitrarily, and it can be well controlled. There is no deformation ratio at all.