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水温对淬火有很大影响。通常,所谓淬火水温以40℃以下最适宜,这是因为水温达到60～70℃后,是完全淬不上火的。若水温升高到
Water temperature has a great impact on the quenching. Usually, the so-called quenching temperature below 40 ℃ most appropriate, this is because the water temperature reaches 60 ~ 70 ℃, it is completely quenched not fire. If the water temperature rises to