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How To Weld Aluminium Casting. Overheating a heat-treated aluminum alloy can anneal soften the casting. Use the highest welding speed possible.
Use a string bead technique as you move along the weld but be careful not to. Instead try to remove the oil and grease and then water vapor. The faster the weld is conducted the faster the cooling rate and the less time the weld is in the hot cracking temperature range.
Use a string bead technique as you move along the weld but be careful not to.
Again when it comes to cleaning or preparing cast aluminum for welding the basic things you need to consider are grease oil and water vapor. Ad High Performance Wide Range Quality Structural Adhesives for Plastic Bonding. Select argon arc welding. The area can then be cleaned up by bead blasting or brushing prior to welding.