畸变试样渗碳淬火变形及金相组织研究

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英文篇名：Study on Distortions and Microstructures of Distortion Specimen after Carburizing and Quenching 作者：王思倩 ; 张忠和 ; 钱仲怀 ; 崔天龙 ; 王博 ; 袁卫东 英文作者：WANG Si-qian;ZHANG Zhong-he;QIAN Zhong-huai;CUI Tian-long;WANG Bo;YUAN Wei-dong;Shenyang Blower Works Group Corporation; 关键词：畸变试样厚度 ; 预备热处理 ; 畸变量 ; 渗层组织 英文关键词：thickness of distortion specimen;;pre-heat treatment;;distortion;;microstructures of carburizing layer 中文刊名：GWRC 英文刊名：Heat Treatment Technology and Equipment 机构：沈阳鼓风机集团股份有限公司; 出版日期：2018-12-25 出版单位：热处理技术与装备 年：2018 期：v.39;No.231 语种：中文; 页：GWRC201806010 页数：4 CN：06 ISSN：36-1291/TG 分类号：37-40

摘要

通过对不同冶炼炉次,采用不同预备热处理方法,设计不同厚度的12Cr2Ni4钢锻件的C形畸变试样,进行渗碳淬火工艺过程的变形量试验,并进行渗碳层组织的检验分析。尽管有冶炼炉次、预备热处理方法的影响,但试样厚度由15 mm增加到18 mm,变形量都对应增大12%～13%;预备热处理方法和成分偏析的共同作用,可以使畸变量相差40%以上;而渗碳层的组织差别不大。结论:增加畸变试样的厚度,则畸变量增大;畸变量同渗碳层组织的关联度不大。本试验的结论对于提高渗碳淬火畸变试验的准确性具有重大意义。
        The distortion test during carburizing and quenching was carried out for the distortion specimens produced in different smelting furnaces and pre-heat treatment methods with different thickness and C shape of 12Cr2Ni4 steel forgings,and the microstructure of carburized layer was tested and analyzed. Despite the influence of smelting furnace and pre-heat treatment,while the thickness of specimen increased from 15 mm to 18 mm,the distortion increased correspondingly by 12% ～ 13%. The difference of distortion could more than 40% due to the combined effect of the pre-heat treatment method and the composition segregation and the structure of the carburized layer had little difference. The conclusion is that with increasing thickness of the distortion specimen,the amount of distortion increases,but little effect on the microstructure of the carburized layer. The conclusion has the great significance for improving the accuracy of carburizing quenching distortion test.

引文

[1] GB/T 25744—2010钢件渗碳淬火回火金相检验[S].
    [2]张忠和,王飞宇,侯秀丽,等.薄壁渗碳淬火齿轮工艺孔设计对畸变量的影响[J].热处理技术与装备,2017,38(5):31-35.
    [3]邹鹏,张忠和,张博,等.高级渗碳淬火钢网状碳化物敏感性的研究[J].热处理技术与装备,2017,38(4):25-28.
    [4]王全振,张忠和,刘爽庆,等. 18CrNiMo7-6钢的热处理工艺研究[J].热处理技术与装备,2017,38(4):25-28.
    [5]张忠和,郭峰,王飞宇,等. 12Cr2Ni4钢预备热处理方法对畸变量的影响[J].热处理技术与装备,2017,38(6):23-26.