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1、J98備案號：DL中華人民共和國電力行業(yè)標準DL／T734一2000火力發(fā)電廠鍋爐汽包焊接修復技術導則Tech吐cal廁dsofweldi此代pairforboilerdrominf（裕51卜6六月powerPlants2000一11一03發(fā)布2001一01一01實施中華人民共和國國家經(jīng)濟貿(mào)易委員會發(fā)布DL／f734一2000前言本標準是根據(jù)原電力工業(yè)部1994年電力行業(yè)標準計劃項目（技綜【1994」42號）的安排而制定的。在我國在役電站鍋爐汽包中，發(fā)現(xiàn)主焊縫、接管座焊縫存在超標缺陷，及運行中有的缺陷發(fā)生擴展的情況，汽包筒體也易發(fā)生腐蝕
2、、局部疲勞損傷的情況。為了確保在役電站鍋爐的安全運行，國內(nèi)曾對幾十臺鍋爐汽包進行過焊接修復，積累了一定經(jīng)驗。本標準是依據(jù)19％年（電力工業(yè)鍋爐壓力容器監(jiān)察規(guī)程》，參照1982年（鍋爐汽包缺陷檢查處理的暫行規(guī)定）和1983年（鍋爐汽包補焊技術要求》的有關規(guī)定編制而成的。本標準對汽包缺陷清除、焊接修復工藝及質(zhì)量檢驗等作出了原則性規(guī)定，是指導性的行業(yè)標準。本標準的附錄A、附錄B、附錄C都是提示的附錄。本標準由中國電力企業(yè)聯(lián)合會標準化中心提出并歸口。本標準由東北電管局、東北電力科學研究院起草。本標準主要起草人：張秉昌、王世江、王瑞林。本標準由中
3、國電力企業(yè)聯(lián)合會標準化中心負責解釋。nlJ汀734一2000目次前言····……11范圍·············································，························································幾················································……12引用標準·······。···························。··········……····················
4、···················……13焊接修復前的準備························································4汽包焊接修復技術···············································，····……歲·······························……3············……55焊后熱處理，········，····················，····。·····························
5、·····?！ぁぁぁぁぁぁぁぁぁぁぁぁ?，··············，，，·······……66質(zhì)量檢驗······················································，··，················，7技術文件···········……廠································································……“““”“‘”“’‘”‘’7·············································
6、············……““‘8附錄A（提示的附錄）汽包鋼的成分、性能·············，··，····……12附錄B（提示的附錄）汽包鋼焊接性資料··，······································································……13附錄C（提示的附錄）焊條成分和性能··································www.bzfxw.com中華人民共和國電力行業(yè)標準火力發(fā)電廠鍋爐汽包焊接修復技術導則DL汀734es2000Techniea
7、lgUideofweldingrepairforboiler一drunlinfosilfil錢1powerplants范圍本標準規(guī)定了電站鍋爐汽包主焊縫、接管座焊縫和人孔加強圈焊縫的缺陷，汽包筒體的腐蝕、局部疲勞等缺陷的清除，焊接修復，質(zhì)量檢驗方法及標準。本標準適用于材質(zhì)為碳鋼、低合金鋼，汽包壁厚小于或等于203～發(fā)電用鍋爐汽包的焊接修復。本標準也適用于汽包等用焊接方法的局部補強。鍋爐集箱、火力發(fā)電廠熱力系統(tǒng)壓力容器的焊接修復也可參照本標準。本標準不適用于大面積的疲勞、應力腐蝕及蠕變裂紋的焊接修復。2引用標準下列標準所包含的條文，通過在
8、本標準中引用而構成為本標準的條文，本標準出版時，所示版本均為有效，所有標準都會被修訂，使用本標準的各方應探討使用下列標準最新版本的可能性。一G】3713197鍋爐用鋼板eseG】3汀33238www.bzf
