How To Harden Metal After Welding. It is critical to include a tempering stress relieve heat treatment afterwards. Not strictly true.
The cracks propagate through the thickness of the weld bead and stop at the parent metal as long as its not brittle. This area has been heated during the welding operation to a sufficient temperature for an adequate amount of time to anneal or partially anneal the base material. It is critical to include a tempering stress relieve heat treatment afterwards.
This is also the case after welding processes.
When this procedure is total. 09102011 1004 pm most laser cutters use a jet of high pressure gas many use nitrogen n2 some use co2 to help blow the molten metal away from the kerf. Postheat hardened tools for 1 hour per inch 2 hours minimum at 50F below the original tempering temperature. Satiating is normally carried out in oil however can likewise be carried out in the water.