一、一般情况下的焊材选用表1材料焊条电弧焊焊条埋弧焊预热温度氩弧焊焊丝备注类别钢号焊丝焊剂普通碳素钢A3,A3F(J422)J427H08AHJ431一般不预热注(1)A3R(J422)J427H08MnAHJ431一般不预热注(1)优质碳素钢(钢管)10号,20号(J422)J427一般不预热注(1)锅炉钢20g(J422)J427H08MnAHJ431一般不预热注(1)低合金结构钢35公斤级16Mn16MnR(J502)J507H10Mn2(低档)H10MnSi(高档)HJ431δ≥38时100~150℃H08Mn2SiA注(2)(3)20MnMo(锻件)J507H10Mn2(低档)H10MnSi(高档)HJ431100~150℃40公斤级15MnVR(J502)J507H10MnSi(低档)H08MnMoA(高档)HJ431δ≥32时100~150℃H08Mn2SiA注(2)(3)50公斤级18MnMoNbRJ707H08MnMoA(高档)HJ250G≥170℃注(4)铬钼钢12CrMo热207H13CrMoAHJ250G≥150℃H13CrMoA(续表1)材料焊条电弧焊焊条焊条电弧焊焊条预热温度氩弧焊焊丝备注类别钢号焊丝焊剂铬钼钢15CrMo热307H13CrMoAHJ250G≥150℃H13CrMoACr5Mo热507≥300℃不锈钢0Cr18Ni91Cr18Ni9Ti奥132H0Cr18Ni9TiHJ260H0Cr18Ni9Ti0Cr17Ni13Mo2Ti奥212H0Cr19Ni12Mo2HJ260H0Cr19Ni12Mo200Cr17Ni14Mo2奥022或D316LH00Cr19Ni12Mo2HJ260H00Cr19Ni12Mo2国外钢号部分材料焊条电弧焊焊条焊条电弧焊焊条预热温度氩弧焊焊丝备注类别钢号焊丝焊剂碳素钢RSt37-2RSt360-2按A3R选择焊材及预热温度西德钢号SM41C同上日本钢号SM41B同上日本钢号SPV24同上日本钢号St35St45.5st35.8(钢管)按10号、20号钢选择焊材及预热温度西德钢号(续表1)材料焊条电弧焊焊条焊条电弧焊焊条预热温度氩弧焊焊丝备注类别钢号焊丝焊剂锅炉钢HⅡ,HⅢ按20g选择焊材及预热温度西德钢号AST-41同上西德钢号碳锰钢St52-3J507H10Mn2H10MnSiHJ431≥150℃H08Mn2SiA西德钢号FG-39J507H08MnMoAHJ431≥150℃西德钢号SM53B/SM53C按15MnVR选择焊材及预热温度日本钢号SPV36同上日本钢号碳锰镍钢BHW-35按18MnMoNbR选择焊材及预热温度西德钢号铬钼钢13CrMo44按15CrMo选择焊材及预热温度西德钢号1Cr-1/2Mo同上注5美国钢号STBA22(钢管)同上日本钢号2.25Cr-1Mo热407HCrMo910HJ250G≥200℃注6美国钢号10CrMo11热407HCrMo910HJ250G≥200℃西德钢号10CrMo910(钢管)热407HCrMo910HJ250G≥200℃西德钢号20CrMo9热407H12Cr3MoMnAHJ250G≥250℃西德钢号(续表1)材料焊条电弧焊焊条焊条电弧焊焊条预热温度氩弧焊焊丝备注类别钢号焊丝焊剂铬钼钢12CrMo195(钢管)按Cr5Mo选择焊材及预热温度西德钢号不锈钢SUS403奥302注7日本钢号SUS405奥302注7日本钢号SUS304按0Cr18Ni9选择焊材注7日本钢号SUS321按1Cr18Ni9Ti选择焊材注7日本钢号SUS346L按00Cr17Ni14Mo2选择焊材注7日本钢号注:(1)焊接二、三类容器承压焊缝时,必须选用结427焊条。(2)对于16MnR、15MnVR钢,在下列情况之一者,必须选用J507焊条:a)产品工作压力:Pg≥16Kg/cm2的容器承压焊缝;b)产品工作温度:T≤-20℃的容器承压焊缝;c)盛装液化石油气等易燃介质容器的承压焊缝;d)筒体板厚δ≥20mm,且整个焊缝厚度全部由手工焊完成的承压焊缝,包括接管外补强圈的外角缝。(对于板厚δ≥20mm的筒体环缝自动焊手工焊打底焊缝除外);e)焊接操作环境温度低于0℃时,除上述情况外,均可选用J502焊条施焊(包括δ≥20mm的自动焊手工打底焊缝)。(3)对于16MnR、15MnVR钢的自动焊丝选用如下:当需要预热焊接时(即16MnRδ30mm,15MnVRδ28mm)均需选用高档的焊材。16MnR应选用H10MnSi;15MnVR应选用H108MnMoA,否则选用低档焊丝。(4)18MnMoNbR自动焊时,本选用250焊剂,但鉴于目前国内不生产该种焊剂,故采用250G焊剂代用。(5)与之相对应的美国牌号为:ASTMA387-72a标准中:A387BASTMA387-74a标准中:A387Gr12(6)与之相对应的美国牌号为:ASTMA387-72a标准中:A387DASTMA387-74a标准中:A387Gr22(7)a)按化学成分对照,SUS403相当于我国钢号1Cr13;SUS405相当于我国钢号0Cr13,但鉴于我厂订货要求SUS403板含碳量均≤0.08%,故相当于0Cr13。b)表中所列的奥302焊条只限于复合板的复层材质为SUS403、SUS405或板厚δ≤6mm的单层钢板焊接时所用。其它情况下应另行考虑焊材。二、复合钢板焊接情况下的焊材选用(表2)复合钢板材料基层过渡层焊条盖面层焊条焊条电弧焊焊条埋弧焊焊丝0Cr13+A3J422/J427H08A/H08MnA奥302奥3020Cr13+16MnJ502/J507H10Mn2/H10MnSi奥302奥3021Cr18Ni9Ti+A3J422/J427H08A/H08MnA奥302奥1321Cr18Ni9Ti+16MnJ502/J507H10Mn2/H10MnSi奥302奥1320Cr17Ni13Mo2Ti+A3J422/J427H08A/H08MnA奥302奥2120Cr17Ni13Mo2Ti+16MnJ502/J507H10Mn2/H10MnSi奥302奥21200Cr17Ni13Mo2Ti+A3J422/J427H08A/H08MnA309L316L00Cr17Ni13Mo2Ti+16MnJ502/J507H10Mn2/H10MnSi309L316L0Cr18Ni11Ti+15CrMoR热307H13CrMoA309L347三、异种钢板焊接情况下的焊材选用表3接头材料的类型异种钢接头材料焊条电弧焊焊条埋弧焊预热温度埋弧焊焊丝焊剂低碳钢+普低钢普低钢+普低钢A3+16MnJ422/J427H08A/H08MnAHJ431≥170℃A3+18MnMoNbRJ427H08A/H08MnAHJ431≥170℃16Mn+18MnMoNbRJ507H10Mn2/H10MnSiHJ431≥170℃20MnMo+18MnMoNbRJ507H10Mn2/H10MnSiHJ431≥170℃低碳钢+铬钼钢普低钢+铬钼钢A3+15CrMoJ427H08A/H08MnAHJ431≥150℃A3+2.25Cr-1MoJ427H08A/H08MnAHJ431≥200℃A3+Cr5MoJ427H08A/H08MnAHJ431≥300℃16Mn+2.25Cr-1MoJ507H10Mn2/H10MnSiHJ431≥200℃铬钼钢+铬钼钢15CrMo+2.25Cr-1Mo热307H13CrMoAHJ250≥200℃2.25Cr-1Mo+Cr5Mo热407HCrMo910HJ250≥300℃其它钢+不锈钢A3+1Cr18Ni9Ti奥30216Mn+1Cr18Ni9Ti奥30218MnMoNbR+1Cr18Ni9Ti奥302或奥309L≥140℃15CrMo+1Cr18Ni9Ti奥302或奥309L≥120℃续表3接头材料的类型异种钢接头材料焊条电弧焊焊条埋弧焊预热温度埋弧焊焊丝焊剂其它钢+不锈钢2.25Cr-1Mo+1Cr18Ni9Ti奥302或奥309L≥170℃Cr5Mo+1Cr18Ni9Ti奥302或奥309L≥250℃堆焊不锈钢各种基体堆焊18-8型不锈钢过渡层:奥302或奥309L表面层:奥132或347L过渡层焊接时按异种钢焊接预热温度而定四、当封头或筒体需要经过正火处理或相当于正火温度下加热(热冲压成型)时,若封头拼板缝或筒体纵缝是用埋弧自动焊接时为保证焊缝强度不低于母材,其自动焊丝不能按表1选取,而应按表4选用。表4材质板厚(mm)埋弧焊焊丝A3R,20g20H08MnA≥20H10Mn216MnR38H10MnSi≥38H08MnMoA