dl／t 869-2004 火力发电厂焊接技术规程

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1、ICS25.160.10F23备案号:13619一200411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·······························································”··················································⋯⋯n1

2、范围····························································································⋯⋯“············⋯⋯12规范性引用文件················································································⋯⋯’二’二‘·一’··⋯13一般规定···································································

3、·······································⋯⋯24坡口制备及组对要求········································································⋯⋯‘二‘二’二’二’二’二‘二45焊接工艺”······································································································”·⋯86质量检验····························

4、··························”········································⋯⋯’.··⋯⋯127质量标准··········································································································⋯⋯158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·...................................29附录C(资料性附录)常用焊丝的化学成

6、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·..........................36DL/T869一2004月U吕根据原国家经济贸易委员会电力司《关于确认1999年度电力行业标准制、修订计划项目的通知》电力〔2000]22

7、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DLT600-2001《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DLT678-1999《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工程所涉及的业主、监理、施工单位等各方均认可的焊接技术要求使用。DL5007