dlt 7 34-2000 火力发电厂锅炉汽包焊接修复技术导则

《dlt 7 34-2000 火力发电厂锅炉汽包焊接修复技术导则》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、J98备案号：DL中华人民共和国电力行业标准DL／T734一2000火力发电厂锅炉汽包焊接修复技术导则Tech吐cal厕dsofweldi此代pairforboilerdrominf（裕51卜6六月powerPlants2000一11一03发布2001一01一01实施中华人民共和国国家经济贸易委员会发布DL／f734一2000前言本标准是根据原电力工业部1994年电力行业标准计划项目（技综【1994」42号）的安排而制定的。在我国在役电站锅炉汽包中，发现主焊缝、接管座焊缝存在超标缺陷，及运行中有的缺陷发生扩展的情况，汽包筒体也易发生腐蚀

2、、局部疲劳损伤的情况。为了确保在役电站锅炉的安全运行，国内曾对几十台锅炉汽包进行过焊接修复，积累了一定经验。本标准是依据19％年（电力工业锅炉压力容器监察规程》，参照1982年（锅炉汽包缺陷检查处理的暂行规定）和1983年（锅炉汽包补焊技术要求》的有关规定编制而成的。本标准对汽包缺陷清除、焊接修复工艺及质量检验等作出了原则性规定，是指导性的行业标准。本标准的附录A、附录B、附录C都是提示的附录。本标准由中国电力企业联合会标准化中心提出并归口。本标准由东北电管局、东北电力科学研究院起草。本标准主要起草人：张秉昌、王世江、王瑞林。本标准由中

3、国电力企业联合会标准化中心负责解释。nlJ汀734一2000目次前言····……11范围·············································，························································几················································……12引用标准·······。···························。··········……····················

4、···················……13焊接修复前的准备························································4汽包焊接修复技术···············································，····……岁·······························……3············……55焊后热处理，········，····················，····。·····························

5、·····。·············，··············，，，·······……66质量检验······················································，··，················，7技术文件···········……厂································································……“““”“‘”“’‘”‘’7·············································

6、············……““‘8附录A（提示的附录）汽包钢的成分、性能·············，··，····……12附录B（提示的附录）汽包钢焊接性资料··，······································································……13附录C（提示的附录）焊条成分和性能··································www.bzfxw.com中华人民共和国电力行业标准火力发电厂锅炉汽包焊接修复技术导则DL汀734es2000Techniea

7、lgUideofweldingrepairforboiler一drunlinfosilfil钱1powerplants范围本标准规定了电站锅炉汽包主焊缝、接管座焊缝和人孔加强圈焊缝的缺陷，汽包筒体的腐蚀、局部疲劳等缺陷的清除，焊接修复，质量检验方法及标准。本标准适用于材质为碳钢、低合金钢，汽包壁厚小于或等于203～发电用锅炉汽包的焊接修复。本标准也适用于汽包等用焊接方法的局部补强。锅炉集箱、火力发电厂热力系统压力容器的焊接修复也可参照本标准。本标准不适用于大面积的疲劳、应力腐蚀及蠕变裂纹的焊接修复。2引用标准下列标准所包含的条文，通过在

8、本标准中引用而构成为本标准的条文，本标准出版时，所示版本均为有效，所有标准都会被修订，使用本标准的各方应探讨使用下列标准最新版本的可能性。一G】3713197锅炉用钢板eseG】3汀33238www.bzf