Why do we preheat before heat treatment?

  • Heat Treatment (PWHT)

    Why do we preheat before heat treatment?

    Posted by thomas on 14/10/2021 at 3:53 pm

    Why Choose Preheating

    Preheating minimizes the temperature difference between the welding arc and the base material. This benefits the weldment in several ways. First is to lessen shrinkage stresses that can lead to cracking and distortion.

    thomas replied 3 years, 6 months ago 1 Member · 0 Replies
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