ステンレス鋼板の溶接でよくあるトラブル (1)

Stainless steel plate welding process is an important procedure for the production of stainless steel equipment.SUN-YEE TECH summarizes the common welding problems for your reference.

Question 1: 6mm 316L stainless steel plate welding with what welding method

Answer: You can use manual tig welding (MTIG), CO2 welding method, manual stick welding can be.

Manual argon arc welding: selection of ER316L wire, 2.5 thick or 3.2 thick can be. For 6mm thick plate can be used X-bevel. Splicing welding should pay attention to the welding deformation problem. Can be front and back are welded once, try to offset the impact of welding deformation.

CO2 welding method: If you want to get better results, you can use flux-cored wire (E316LT) for welding. The reason for choosing flux cored is that the spatter is extremely small and the weld protection effect is good, but it is more expensive. Operation, pay attention to the operation of interlayer root clearing, must remove the flux skin before the next welding.

Manual electrode welding: manual electrode welding can also be used to deal with. Select A207 welding rod for welding. Stick welding also requires the operation of interlayer root cleaning.

Question 2: Thin plate with argon arc welding welding skills

Answer: It depends on the specific requirements. Weld seam flatness, the size of the deformation, whether it needs to be polished, 等. 0.7mm thickness above the thin plate can be welded.

In general, 0.7mm plate welded well will have a certain deformation. In order to reduce the degree of deformation can be tried according to the following steps:

1. try to reduce the gap between the weldments (the tighter the better);
2. If you want to fill the wire, the wire must be fine, 0.8 can be; 3.
3. The current should be a little small, small enough to dissolve the wire on the line, about 30A or so, the welder is different, according to the welder depending on the welding machine;
4. The welding speed must be fast, the faster the better, the deformation is also the smaller, the more beautiful the weld. Weld is also the more beautiful, if there is water cooling is better;
5. The welder also have to pay attention to the general use of inverter AC and DC welder, the current is more stable. This kind of welding machine will be a little more expensive.
6. Hire skilled operation, professionalism and strong technical staff.