化学回火(Chemical tempering)是将玻璃至于KNO 3 ,K 2 SO 4 或NaNO 3 之熔融液中加热,使其发生离子交换作用,则玻璃表面较小的原子被其它较大的 原子取代,而...
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In chemical tempering, sodium ions in the surface are replaced with potassium ions, which are about 30 percent larger.
还有化学退火的方法,即用尺寸大30%的钾离子取代表面的钠离子。
The cause of fracture is related with tempering temperature, machining defects on the surface and chemical composition of the fracture bolt.
主要原因与热处理回火温度、表面加工缺陷以及材料化学成分有关。
The hair lines of 45 steel driving axle when quenching and tempering was analysed by heat etching, chemical analysis and metallographic.
本文采用热酸浸蚀试验,化学成份分析和金相分析等手段,对45钢轴所出现的发纹进行分析。
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