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。
In the final heat treatment using circular quenching grain refinement effect is good, three times quenching refinement of grain can achieve 10 levels.
在最终热处理采用循环淬火晶粒细化效果好，三次淬火细化的晶粒可达到10级。
In the final heat treatment using circular quenching grain refinement effect is good, three times quenching refinement of grain can achieve 10 levels.
在最终热处理采用循环淬火晶粒细化效果好，三次淬火细化的晶粒可达到10级。
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