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AhaBulb: Stuff Everyone Should Know · ahabulb.com/weld-preheat-purpose

According to Miller, what does preheating the metal do for a weld?

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  1. Speeds cooling so the weld sets faster
  2. Slows cooling and drives out moisture
  3. Removes the need for shielding gas

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References

  1. Miller Electric, Preheat in Welding: What Is It and When Should You Use It? www.millerwelds.com/resources/article-library/preheat-in-welding-what-is-it-and-when-should-you-use-it Checked 2026-10-10.

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