JB／T4736-2002补强圈

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1、J日中华人民共和国行」k标准JB/T4736-2002代替JB/T47301995补强圈Reinforcingpad2002-08-22发布2003-03-01实施习wk__;}l齐芍If-M-}*，员雀纷发布锅炉信息网：www.boilerinfo.net.田/T4736-2002目次前言·······⋯⋯‘·······························································································

2、·······⋯⋯7I范围·····································，······························，···········································⋯⋯92规范性引用文件································································································⋯⋯93符号·············

3、····································································································⋯⋯94型式、尺寸·········································································································⋯⋯95技术要求·····························

4、·············································...........···············.⋯⋯，116标记································································································，··············，·⋯12附录A(资料性附录)各种坡口的焊接接头型式及适用范围·····························

5、···········⋯⋯。⋯13锅炉信息网：www.boilerinfo.netJB/T4736-2002前言本标准自颁布之日起代替JB/T4736-1995《补强圈》。本标准与JB/T4736-1995相比，主要不同之处是:—JB/T4736-1995规定补强圈只能用整板制造，本标准增加了补强圈可采用径向分块拼接制造的规定，并相应增加了对补强圈拼接焊缝的无损检测要求与合格级别的规定;—在本标准附录A中增加了部分补强圈焊接接头型式;—将JB/T4736-1995中“补强圈厚度应不大于壳体开孔处的

6、名义厚度”的规定，改为“补强圈厚度应不大于1.5倍壳体开孔处的名义厚度”。本标准规定了补强圈的制造、检验与验收要求，但补强圈的材料与设计计算应符合GB150-1998《钢制压力容器》的有关规定。本标准的附录A是资料性附录。本标准由全国压力容器标准化技术委员会提出。本标准由国家经济贸易委员会批准。本标准由全国压力容器标准化技术委员会制造分委员会与设计分委员会归口。本标准由合肥通用机械研究所起草。本标准主要起草人:崔军。本标准由全国压力容器标准化技术委员会负责解释。锅炉信息网：www.boilerin

7、fo.netJB/T4736-2002补强圈1范围1.1本标准规定了钢制压力容器壳体开孔补强用补强圈的型式、尺寸及技术要求。1.2本标准用于钢制压力容器壳体开孔采用补强圈结构补强时，应同时具备下列条件:a)容器设计压力小于6.4MPa;b)容器设计温度不大于35090;c)容器壳体开孔处名义厚度S=-38mm;d)容器壳体钢材的标准抗拉强度下限值不大于540MPa;e)补强圈厚度应不大于1.5倍壳体开孔处的名义厚度。1.3本标准不推荐用于铬钥钢制造的容器，也不推荐用于盛装毒性为极度危害与高度危害介

8、质的容器。1.4本标准不适用于承受疲劳载荷的容器。2规范性引用文件下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。GB150-1998钢制压力容器GB/T197-1981普通螺纹公差与配合GB/T1804-200()一般公差未注公差的线性和角度尺寸的公差JB4708-2000钢制