| 摘要 |
Provided is a method for producing national-standard magnesium alloy ingots on the basis of magnesium alloy waste material, comprising the following steps: step a: sorting and removing impurities from magnesium alloy waste material, and cleaning and drying said material, the cleaning comprising high-pressure rinsing, pickling, and water washing, performed in sequence; step b: preheating the magnesium alloy waste material obtained in step a, and adding material, melting, refining, removing impurities, and alloying to obtain a magnesium alloy liquid; step c: casting ingots from the magnesium alloy liquid obtained in step b, to obtain magnesium alloy ingots conforming to national standards. The method directly takes magnesium alloy waste material as a raw material to produce magnesium alloy ingots conforming to national standards; the addition of costly high-purity magnesium is unnecessary, and the number of castings in which the amount of harmful elements meets specifications accounts for 98% or more of the total number of castings; 2% slightly exceed specifications, which does not constitute a severe number of times specifications are exceeded; moreover, the amount of alloying elements added is small, and energy consumption is significantly lower than in the prior art; the practical value of the invention is high, production costs are greatly reduced, the entire process flow is easy to implement, operation is relatively simple, and the method is suitable for use in industry. |
