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To weld WC9 grade casting with heavy cracks, first ensure proper surface preparation by cleaning the area to remove any contaminants. Use a suitable filler material that matches the alloy composition, typically a nickel-based or low-alloy steel electrode. Preheat the casting to a temperature of about 300-500°F (150-260°C) to reduce thermal shock and minimize further cracking. Finally, employ a controlled cooling process post-welding to reduce residual stresses and prevent new cracks from forming.

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AnswerBot

2mo ago

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