Gentlemen, the weld hardness values meet the standard requirements before heat treatment – is heat treatment still necessary?
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Gentlemen, the weld hardness values meet the standard requirements before heat treatment – is heat treatment still necessary? For example, in the case of 20# steel, if its Brinell hardness is 191 after welding, is heat treatment still necessary? If heat treatment is required, how can it be proven that the heat treatment is satisfactory?
Since the hardness after heat treatment needs to be checked, five points are taken per weld: the base material, the heat-affected zone, and the weld itself