熔盐储罐壁板的焊接工艺

1、熔盐储罐壁板的焊接工艺7Weldingoftankshell熔盐储罐壁板安装采用倒装法进行，即先安装顶圈壁板及拱顶，然后壁板依次向下安装焊接，最后安装焊接底圈壁板及大脚焊缝。根据这种安装方法，壁板立缝、环缝采取先焊外侧，然后内侧搭设临时操作平台进行焊缝清根和焊接工作。立缝内外侧均采用气电立焊，环缝外侧采用自动焊，内侧手工电弧焊。7.1顶圈壁板的焊接7.1Weldingoftanktopshell顶圈壁板组对完毕后先进行纵缝焊接，焊接方法采用气电立焊，先焊接大坡口，后焊小坡口，然后利用内侧操作平台对焊缝进行清根，清根可采用磨光机或碳弧气刨，但刨后应用角向磨光机将刨槽内的渗碳层和杂物打磨干净。（1

2、0mm和16mm壁板可一次焊接成型）为了便于环缝的装配，各条纵缝的上下端各留出150mm暂不焊接，待环缝装配后再焊接。Afterthetopringwallboardisassembled,verticalseamweldingshallbeperformedfirst,withweldingmethodofmanualwelding,ifthedirectionofthebevelisattheoutsideofthewallboard,twobackingweldingoutsidethewallboardshallbecarriedoutfirst(ifinside,thewelding

3、sequencewouldbeopposite),andthencleartheweldrootattheback,whichcanusegrinderorcarbonarcgouging,butaftergouging,anglegrindershallbeusedtocleanthecarburizedlayeranddebris.(Theshellplateof10mmand16mmcanbeweldedatoncetime.)Inordertofacilitatetheassemblyofcircularseam,150mmshallbesetattheupperandlowerend

4、sofeachlongitudinalseam,andweldedafterthecircularseamassembly.7.2其余各层壁板的焊接7.2Theweldingtheremainingwallboardofeachlayer721其余各层壁板焊接先焊纵缝，再焊环缝。纵缝焊接前，先焊上定位龙门板，然后拆下纵缝组对卡具，16mm及以上的壁板纵缝为x型坡口，其余v型坡口。焊接时，先焊外侧，然后内侧清根焊接。7.2.1Fortheweldingofremaininglayersofwallboards,longitudinalseamshallbeweldedfirst,andthenc

5、ircularseam,beforelongitudinalseamwelding,thepositioningbatterboardshallbewelded,andthenthelongitudinalseamassemblyfixturesshallberemoved.16mmandabovewallboardlongitudinalseamisx-shapebevelandtherestisv-shapebevel.Whenwelding,theoutsideshallbeweldedbeforeinside.壁板环缝的焊接，采用埋弧自动焊和手工焊，焊接程序：先埋弧自动焊焊接外侧，多台

6、埋弧焊机均布同时沿同一方向进行施焊。然后反面进行清根，清根方法同前。然后用手工焊焊接内侧焊缝7.2.2Weldingprocedure:firsttheoutsideweldwiththeSAW,thencleantherootattheback,withthesamemethodstatedabove.ThenweldinsidewithSMAW.罐壁板厚度自下而上分别为8=42、34、25、16、10mm共计5圈，采用电动葫芦提升倒装法组装。拆除组装用的工卡具时，不得损伤母材。如有损伤，应按标准进行修补。钢板表面的焊疤应打磨平整。8=42,34,25,16and10mmwith5circl

7、esintotal,thetankshellsareinstalledbymeansofelectrichoistliftingupside-downmethod.Thetoolingandclampshallbedisassembledwithoutwearingthebasematerial.Ifthereisanydamage,itshallberepairedasperthestandards.Thecraterofthesteelplatesurfaceshallbegroundtoasmooth,uniformfinish.接应先焊纵缝，在上下纵缝全部焊接完后，再焊环缝。环缝焊接时

8、，应采用数台焊机均布施焊。先焊接外侧焊缝，并用电弧气刨清根后，再用手工电弧焊进行内侧焊缝的焊接。7.2.4Whentheshellisassembled,clearanceshallconformtotheweldingprocessrequirements.Whenthetankshelliswelded,longitudinalseamshallbeweldedfirstly,andcircumferentialseamshallbeweldedafterthetopandthebottomcircumferentialseamsfinishwelding.Whenthecircumferentialseamiswelded,severalsetsofweldingmachineshallbeusedtowelduniformly.Theouterweldingseamswillbeweldedatfirst,thebac