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終于體驗(yàn)了一回?cái)?shù)控車“削鐵如泥”的感覺 |
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點(diǎn)評(píng)
鋼鐵加熱后空氣中冷卻是回火,爐中緩慢冷卻是退火。不過車削時(shí)切屑溫度高氧化變色,和回火還是退火有什么相干。
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