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50Cr活塞筒热处理工艺的改进

Daijian WU,Rui LI,Huaihao ZHAO,Guangming ZHANG

Foundry Technology（2017）

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Abstract
研究了水、油、PAG水溶液三种冷却介质对50Cr活塞筒淬火后硬度、开裂倾向以及回火后组织的影响.结果表明:在830℃保温50 min后淬入10%~15% PAG水溶液中,经440℃回火1h后出炉空冷,活塞筒硬度达到工艺要求、无开裂,合金组织为均匀的回火屈氏体.
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