That is to treat LD31 alloy by selecting reasonable chemical components and strengthening melt refining.
提出了选择合理的化学成份和加强熔体精炼等方法，对LD31合金进行处理。
The invention relates to metallurgy and foundry engineering, in particular to producing a monocrystalline structure and to a melt refining associated therewith.
本发明涉及一种生产超纯金属以及由其制造的单晶体的方法。
Occasionally, a bubble is not removed during refining, a sand grain refuses to melt, a tremor in the tin puts ripples into the glass ribbon.
"有时候，在提炼的过程中会出现这些情况：一个气泡没有被移除，一个砂粒没有熔化，（熔融的）锡的一次颤动把波纹带进了玻璃带中。
Melt crystallization is a physical method for separating or refining organic compounds.
熔融结晶是一种分离精制有机物的物理方法。
The purification effect of Al-Si melt by composite refining technique was studied, the main existing form and its interaction of inclusion and gas in Al-Si melt were introduced.
研究了复合精炼对铝硅合金熔体的净化效果，并介绍了铝硅合金熔体中主要氧化夹杂物与气体的存在形态及其相互作用。
By purifying the alloy melt, refining matrix grain and carbide, it is possible to increase the impact toughness of the Cr-alloyed white cast iron.
通过净化合金液，细化基体晶粒，细化碳化物可使铬合金白口铸铁的冲击韧性提高。
Methods: TotanshinoneIIA Nano-liposomes were prepared by freeze-melt, reverse phase evaporation and ultrasonic bath-refining-freeze-drying.
分别采用冻融法、逆相蒸发法、超声-匀浆-冷冻干燥法制备丹参酮IIA纳米脂质体。
Methods: TotanshinoneIIA Nano-liposomes were prepared by freeze-melt, reverse phase evaporation and ultrasonic bath-refining-freeze-drying.
分别采用冻融法、逆相蒸发法、超声-匀浆-冷冻干燥法制备丹参酮IIA纳米脂质体。
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