The heat affected zone of the stainless steel heat exchanger tube is the key area of ​​its welding process, and this area is more likely to break than other positions. So why does it break? What factors can cause it to break?
1. The welding process does not select the appropriate process or the parameters are not well controlled, so that the welding temperature is too high or the cooling speed is too fast, resulting in the metal structure of the heat affected zone cannot be fully restored.
2. The manufacturing material of the heat exchange tube does not have good corrosion resistance and oxidation resistance, and the heat affected zone will break under high temperature environment.
3. The use environment of the heat exchange tube is relatively harsh, and it is easy to encounter high temperature, high pressure, and corrosive media.
These situations will cause the heat affected zone of the stainless steel heat exchange tube to break, so we must prevent it after we know it.