Excavator forearm reinforcement
1. It is necessary to clean up the welding place before welding.
Two, before welding, a certain preheating should be carried out.
Three, welding must select suitable welding materials.
Four. Weld penetration must be ensured during welding
The type of welding electrode is very important. If you want to know what material you need, you must take some iron foam test, then come out with a test, and then match the electrodes with the ingredients. J507 electrode is enough, tensile strength of 50 kg class, it is just a kind of structural steel. If you have used 507 before and can ensure welding penetration and cracking, it is recommended that you change the J607. It should be enough.
It is necessary to clean up before welding (it is to remove the original cracking and welding meat, use a phase grinder to grind or use carbon arc gouging, but after the planing, it must be grinded clean iron oxide). If possible, it also needs to preheat the welding position for 100 degrees. Then then use the diameter of 3.2J507 welding rod welding, the welding will stop, use the hammer to strike the weld and the weld edge, and after complete welding, it has been struck with the hammer until the weld is basically cooled. The purpose is to release welding stress because it is impossible to heat treatment after welding. Welding must ensure welding penetration. If the weld gap is large, backboard can be added inside.
