[Edgar Kirby]

To all community members, stuck cause my Millermatic 252 welds crack on steel, Using 0.035-inch wire at 22V, and welds cracks during bending. Can you give me a solution to this?

[Scott Whitaker]

Cracks comes from rapid cooling or poor prep, Preheat steel to 200°F before welding, My Millermatic 252 had cracking issues too, Use 25 CFH argon for coverage, Set wire speed to 240 ipm, Clean with acetone, Use 7018 electrode, Ensure slow cooling.

[Bridget Jones]

cracking occurs due to contaminated steel surfaces, Clean with alcohol thorough before welding, My Miller welds hold up now, Ensure proper joint preparation.

[Monica Moyer]

Try slower cooling with insulation blankets, it helps.

[Monica Brock]

High voltage can cause cracks, Lower to 20V.

[Gabrielle Chaney]

Use 0.030-inch wire, it reduces stress in welds.

[Author]

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