55CrSi淬回火弹簧钢丝奥氏体化相变规律研究

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英文篇名：Research of austenitizing phase transition law of 55CrSi quenching and tempering spring wire 作者：邢献强 ; 菅军伟 ; 武怀强 英文作者：Xing Xianqiang;Jian Junwei;Wu Huaiqiang;Guangzhou ORSA Wire Science & Technology Co.,Ltd.; 关键词：55CrSi ; 弹簧钢丝 ; 奥氏体化 ; 相变 ; 抗拉强度 ; 偏析 英文关键词：55CrSi;;spring wire;;austenitizing;;phase transition;;tensile strength;;segregation 中文刊名：JSZP 英文刊名：Metal Products 机构：广州市奥赛钢线科技有限公司; 出版日期：2019-06-25 出版单位：金属制品 年：2019 期：v.45;No.268 基金：广州市对外科技合作计划项目(201807010079) 语种：中文; 页：JSZP201903002 页数：5 CN：03 ISSN：41-1145/TG 分类号：14-18

摘要

对?5.0 mm 55CrSi弹簧钢丝分别采用奥氏体化时间1.0, 1.5, 2.0, 2.5,3.0, 3.5 min加热处理后,进行铅浴回火,对钢丝相变规律进行研究。?5.0 mm 55CrSi冷拉钢丝在展开式连续生产线上进行淬回火热处理时,相变过程分为6个阶段:回复;小部分片状渗碳体转变为球状或短棒状;大部分片状渗碳体转变为球状或短棒状加局部出现奥氏体;奥氏体上分布较多残留球状未溶碳化物;残留球状碳化物溶解消失;奥氏体成分均匀化。
        Diameter 5.0 mm 55 CrSi spring wires were heat treated by adopting austenitizing1.0, 1.5, 2.0, 2.5,3.0, 3.5 min time, then lead bath tempering, the steel wires austenitizing phase transition were studied. Diameter 5.0 mm 55 CrSi cold drawn steel wires were quenching and tempering heat treated on extended continuous production line, phase transition process was the following 6 stages such as recovery, then a small part of sheet cementite is transformed into sphericity or short rod, then most of sheet cementite was transformed into sphericity or short rod plus local austenite, then more spherical undissolved carbide were distributed in austenite; then residual spherical carbide dissolved and disappeared; then austenite composition homogenization.

引文

[1] 邢献强,菅军伟,董峰.方框形偏析对65SiCrV6线材及其淬回火弹簧钢丝的影响[J].金属制品,2018(6):19-24.
    [2] 邢献强,李居强.55CrSi油淬火-回火阀门弹簧钢丝通条性能研究[J].金属制品,2004(2):14-15.
    [3] 刘云旭.金属热处理[M].北京:机械工业出版社,1981.