Welding Alloy Castings. For optimum results casting should be solution annealed before welding. For each Alloy that we pour there is a weld procedure.
Vacuum chamber with a 254 mm 1 nominal wall thickness Fig1. Almost all aluminium alloys - both in the solution treated and where appropriate hardened conditions - can be friction stir welded. These alloys are available as wrought or cast products the low Zn alloys being used generally for jewellery and coins the higher Zn alloys in applications where increased mechanical strength is required such as plumbing products pump casings and thin wall low pressure vessels.
Almost all aluminium alloys - both in the solution treated and where appropriate hardened conditions - can be friction stir welded.
Process Alloys Processes Wrought alloys All except 025 copper addition - some exceptions 025 copper additions and free machining alloys Sand gravity permanent mould low pressure. For optimum results casting should be solution annealed before welding. In-process weld rework of castings is a routine casting finishing activity that is used to mend such casting surface imperfections across almost all alloy families and mold cavity-making processes. High manganese steel castings.