QCT 481-2005 汽车发动机曲轴技术条件.pdf

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1、中华人民共和国汽车行」业标准QC/T481-2005代替QC/T481-1999汽车发动机曲轴技术条件Specificationsofcrankshaftforvehicleengine2005-02-14发布2005-07-01实施虱灵定灵不0}交革}}-}2r发布中华人民共和国国家发展和改革委员会月匕公口2005年第7号国家发展改革委批准《陶瓷墙地砖胶粘剂》等265项行业标准(标准编号、名称及实施日期见附件)，其中建材行业标准73项、电力行业标准90项、机械行业标准38项、煤炭行业标准28项、黑色冶金行业标准4项、制药装备行业标准23项、物流行业标准1项、汽车行业标准8项，现予公布。

2、以上建材行业标准由建材工业出版社出版，电力行业标准由电力出版社出版，机械行业标准由机械工业出版社出版，煤炭行业标准由煤炭工业出版社出版，黑色冶金行业标准由冶金工业出版社出版，制药装备行业标准和汽车行业标准由中国计划出版社出版，物流行业标准由标准出版社出版。附件:8项汽车行业标准编号及名称中华人民共和国国家发展和改革委员会=00五年二月十四日附件:8项汽车行业标准编号及名称序号标准编号标准名称被代替标准编号1QCT641-2005汽车用塑料密封条QC/T641-20002QC/T728-2005汽车整车大气暴露试验方法3QC/T430--2005火花塞产品型号编制方法QC/T430-199

3、94QC/T729-2005汽车用交流发电机技术条件QC/T29094-19925QC/T730-2005汽车用薄壁绝缘低压电线6QC/T731-2005汽车用起动机技术条件QC/T29064-19927QC/T732-2005乘用车强化腐蚀试验方法8QC/T481-2005汽车发动机曲轴技术条件QC/T481-19990〔/T481-200.5目次前言···············································································································⋯⋯I1范围··

4、·········································································································⋯⋯12规范性引用文件······················································..························.........⋯⋯13技术要求····················································································

5、······.........⋯⋯24试验方法······································································································⋯⋯55检验规则······································································································⋯⋯66标志、包装、运输及贮存···············································

6、·····································⋯⋯67质量保证······································································································⋯⋯7QC/T481-2005前言本标准是在QC/T481-1999(即:JB4240-1986)《汽车发动机曲轴技术条件》基础上修订的，主要修改如下:—增加了“第1章范围”和“第2章规范性引用文件”。—拓展了原标准1.2.2锻钢曲轴材料。根据锻钢曲轴材料的发展趋势，提出了曲轴推荐选用非调质钢锻造，

7、并在后面相应条款中增加了非调质钢的内容。—原标准1.4.1中铸铁件硬度，由240HBS一320HBS改为220HBS一320HBS.—原标准1.4.2中球墨铸铁曲轴基体组织的珠光体含量，由大于85%改为不小于70%.—原标准1.5.1.1中锻钢件曲轴淬硬层深度，由2mm一5mm改为1mm一4mm.—原标准1.5.1.2中球墨铸铁曲轴淬硬层深度，由1.5mm一4.5mm改为1mm一4mm.—原标准表1中的“软氮化”和“离子氮化”，分别