沁北925焊接的施工与管理VIP免费

(2)其他施工技术方案E、焊接的施工与管理(一)焊接的施工与管理概述·······················································1(二)焊接、热处理质量控制流程················································8(三)焊接工艺评定程序····························································10(四)焊工资格考试程序····························································16(五)焊接材料储存、保管、烘干及发放程序····························19(六)焊缝热处理程序·······························································22(七)焊接检验管理程序····························································25(八)焊接施工方案及工艺措施·················································27(九)焊接施工过程控制····························································32(十)焊接技术资料及移交资料管理··········································35(十一)焊工资格考核及焊接工艺评定安排································36(十二)金属试验室与金属监督··················································37(十三)附件···············································································40主要内容第1页共53页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共53页(一)焊接的施工与管理概述1.0本专业概述1.1工程规模华能沁北电厂一期工程1#600MW机组，是国内制造的首台超临界机组，其中锅炉设备由东方锅炉厂制造，汽轮机由哈尔滨汽轮机厂制造。1.2焊接工程的主要特点1.2.1焊接工作量大我公司到设备制造厂家调研得到数据，本工程1#锅炉预计有现场安装焊口23000余道，且锅炉本体集箱、连络管和汽机四大管道管径大、管壁厚，焊接工作量大。根据炉型特点现场焊接位置较困难，现场安装焊接难度较大。1.2.2涉及材质多、高材质焊接工艺较困难本工程机组设备钢号，采用美国ASME标准，涉及的主要材质有：SA-106GrC、SA-213T2、SA-335P12、SA-387Gr11、SA-213T22、SA-335P22、SA-213T91、SA-335P91、SA-213TP347H等，而且高温过热器、高温再热器大量使用SA-213T91、SA-213TP347H等马氏体耐热钢及耐热不锈钢的材料，由于此类材质具有强烈的脆硬敏感性和热影响区的消除应力裂纹倾向以及焊缝根部焊接的易氧化性，给现场焊接工作带来很大困难。1.2.3需要焊前预热和焊后热处理的焊口多根据本台锅炉设备制造厂商提供的锅炉设备制造材料，锅炉受热面小径管焊口大部分需要进行焊前预热，高材质的过热器、再热器焊口部分还需要焊后热处理，大径管焊接都需要进行焊前预热和焊后热处理，热处理工作量较大。2.0编制依据2.1华能沁北电厂一期工程施工招标文件2.2西北电力设计院初步设计的图纸及说明书2.3《电力建设施工及验收技术规范》DJ/T5047-952.4《火力发电工程施工组织设计导则》2.5《火电施工质量检验及评定标准》2.6国家现行的法律、法规、规程、规定、标准及国外的技术标准2.7我公司同容量类似工程施工经验：元宝山发电厂二期1×600MW机组锅炉安装工程广东大亚湾核电站2×900MW机组BOP安装工程菲律宾苏澳电厂2×600MW机组锅炉安装工程第2页共53页第1页共53页编号：时间：2021...