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Chromium Molybdenum Steels Chromium Molybdenum Steels Welding
- Aug 18, 2018 -

Carbon of chromium molybdenum steel is relatively large, and generally has different degrees of cold crack tendency, which can be prevented by the following measures:

1. Control the hydrogen content in welding electrode and select low hydrogen and alkali welding electrode.

2. Preheat the welding materials before welding. By preheating, the cooling rate of the welding materials can be reduced.The preheating temperature shall be determined by the welding process evaluation. The welding crack test shall be carried out before the welding process evaluation to determine the preheating temperature.After-heat measures should be taken immediately after welding