Katalor is popular supplier of GBT 8162 35CrMo Steel Pipe. we have rich experience in exporting GBT 8162 35CrMo Steel Pipe. we have set up long relationship with many users of GBT 8162 35CrMo Steel Pipe and get a high value.
The most commonly used GBT 8162 35CrMo steel pipe is a seamless steel pipe, basically no 35CrMo welded pipe. One of the important reasons is that GBT 8162 35CrMo steel does not have very good weldability.
According to the International Welding Association (IIW), when the Ceq is less than 0.40%, the hardening tendency of the steel is not obvious, and the welding performance is excellent. The welding can be directly welded without preheating. When Ceq = 0.40-0.60%, the hardening tendency of the steel is obvious, the weldability is still available, and the steel needs proper preheating before welding. At the same time, technical measures such as slow cooling after welding are needed to control the welding connection energy. When Ceq> 0.60%, the steel tends to have a strong tendency to have poor weldability. It belongs to hard-welded steel such as GBT 8162 35CrMo steel pipe. It is necessary to use higher preheating temperature and strict technical measures, and use suitable welding materials to weld hard steel such as 35CrMo steel.
According to the calculation, the carbon equivalent of GBT 8162 35CrMo steel pipe is Ceq = 0.72%. It can be seen that the 35CrMo steel has poor weldability, large tendency to weld hardening, and a large tendency of hot cracking and cold cracking in the heat-affected zone, especially in the tempered state. The tendency of cold cracking will be very prominent in the heat-affected zone.
so, on the basis of selecting suitable welding materials and welding methods, it is also necessary to use a higher preheating temperature before welding, strict process measures and appropriate interlayer temperature control to achieve the welding purpose of GBT 8162 35CrMo steel pipe.katalor can produce GBT 8162 35CrMo Steel Pipe according to your requirement for different size. GBT 8162 35CrMo Steel Pipe’s delivery time is short. Welcome to send your all kinds of problem about GBT 8162 35CrMo Steel Pipe.
