Different materials and different welding methods
Welding, also known as fusion and fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. So, when choosing welding materials, do you know which method to choose? Listen to Jiangmen welding processing editor.
Due to the characteristics of high temperature, high pressure and strong corrosion of some devices, the intergranular corrosion, stress corrosion, high-temperature oxidation and high-temperature creep properties of the joints are mainly considered in most dissimilar steel welded joints. The composition of the fusion zone in the welded joints is required to be stable and the transition layer is not obvious. Therefore, the manual arc welding with small fusion ratio and easy operation can be used.
However, hydrogen corrosion should be considered for dissimilar steel joints under hydrogen condition, especially for dissimilar joints welded by low alloy steel (such as 16Mn steel) and austenitic steel (such as SUS304). By adopting TIG welding with high fusion ratio, the peeling crack of this kind of dissimilar joint can be prevented.
This article comes from the manual welding equipment of water tankhttp://www.abbzs.com