The cryogenic treatment could improve the bending strength more obviously when it was performed between two tempering processes than after quenching or preprocessing.
英
美
释义
深冷处理安排在两次回火之间进行,对抗弯强度的提高比较明显;安排在淬火后或预处理后进行,对抗弯强度的影响不明显。
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