The results were attained in the experiments: by using the method of ultrasonic with optimum ultrasonic treatment time, the grain refinement rate of industry pure aluminum ingot is increase obviously.
研究结果表明，采用合适的超声波处理时间，可以提高工业纯铝铸锭的细化率。
It reviews the optimization measures of Al-Si piston alloy, including kinds, chemical composition, grain refinement, modification, alloying and heat treatment.
评述了铝硅活塞合金的种类，化学成分，晶粒细化，变质处理，合金化和热处理工艺等优化手段。
The mechanism of grain refinement during cast-rolling process with ultrasonic treatment is discussed, and the presented problems are pointed out.
探讨超声波空化现象及声流作用对铸轧铝板带组织细化作用的机制。指出目前超声波铝铸轧过程中存在的问题。
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