dl869-2004火力发电厂焊接技术规程

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1、ICS25.160.10F23备案号:13619一200411L中华人民共和国电力行业标准DL/T869一2004代替DL5007一1992火力发电厂焊接技术规程Thecodeofweldingforpowerplant2004-03-09发布2004-06-01实施中华人民共和国国家发展和改革委员会发布DL/T869一2004目次前言·····················································································································⋯⋯

2、II1范围·····························。·。··················································································⋯⋯12规范性引用文件··。·····················································，··········································⋯⋯13一般规定··················。································

3、·························································⋯⋯24坡口制备及组对要求··········································································⋯⋯””””“””””.45焊接工艺······················································。·····················································⋯⋯86质量检验··········

4、··································································································⋯⋯127质量标准·················································································。··························⋯⋯巧8焊接修复·································································

5、···········································⋯⋯179焊接技术文件······································································································⋯⋯18附录A(资料性附录)火力发电厂常用钢材的化学成分和力学性能·......................................19附录B(资料性附录)常用焊条熔敷金属的化学成分和常温力学性能·...........................

6、........29附录C(资料性附录)常用焊丝的化学成分·....................................................................33附录D(资料性附录)埋弧自动焊常用焊剂简明表·...........................................................35附录E(资料性附录)焊接异种钢的焊条(焊丝)及焊后热处理温度速查表·······················一36DL/T869一2004月I]舀根据原国家经济贸易委员会电力司《关于确认1999年度电力行

7、业标准制、修订计划项目的通知》电力【2000]22号文的要求，国电电力建设研究所组织行业内有关单位组成标准修订组，对DL5007-1992《电力建设施工及验收技术规范》(火力发电厂焊接篇)进行了修订，其格式按照DUT600-2001《电力行业标准编写基本规定》的规定。本标准修订过程中，参照了有关国际标准、国家标准和国内有关标准及规定。根据我国电力建设工程技术的发展和标准化工作的要求，在进行调查研究的基础上，对本标准作出定位。本标准和DL/T678-1999《电站钢结构焊接通用技术条件》共同构成电力行业焊接工作的主干标准。本标准可以作为电力