各种手工焊焊接位置的选取规范

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1、http://www.taflmy.comhttp://www.xtlxlj.comhttp://www.xdnjsb.cnhttp://www.shanguo0538.com各种手工焊焊接位置的选取规范各种焊接方法规范allkindsofweldingmethodspecification1手工电弧焊1manualelectricarcwelding1.1有焊接工艺的按焊接工艺规定操作。1.1asstipulatedintheweldingprocessofweldingprocesses.1.2没焊接工艺的按焊条说明书的规定并参照下表选取合适的电流。1.2nowel

2、dingprocessaccordingtoprovisionsoftheelectrodemanualandrefertothetablebelowtoselecttheappropriatecurrent.焊条直径（mm）1.62.02.53.24.00http://www.taflmy.comhttp://www.xtlxlj.comhttp://www.xdnjsb.cnhttp://www.shanguo0538.com电流（A）25～4040～6050～8090～130160～220200～2701.3焊条规格应要根据工件的厚度、坡口类型及焊接位置选取。1.

3、3electrodespecificationshouldbeaccordingtothethicknessoftheworkpiece,groovetypeandweldingpositionselection.平焊位置焊条大直径为Ф0mmForФflatpositionweldingoflargediameter0mm横焊平角焊焊条最大直径为Ф0mmHorizontalflatfilletweldingelectrodeФ0mmindiameter立焊和仰焊位置焊条最大直径宜为Ф4.0mmVerticalandoverheadweldingelectrodeposi

4、tionappropriateforФ4.0mmdiameter1.4单层焊道坡口焊的最大厚度为6mm，角焊缝焊脚最大宽度为8mm。1.4ensuringmonolayerweldgrooveweldhttp://www.taflmy.comhttp://www.xtlxlj.comhttp://www.xdnjsb.cnhttp://www.shanguo0538.comthicknessis6mm,maximumwidthof8mmfilletweldingfeet.1.5坡口底层焊道应采用Ф3.2的焊条，底层根部焊道的最小尺寸不应太小，以防止产生裂纹。1.5gro

5、ovebottombeadshoulduseФelectrodeof3.2,therootpassoftheminimalsizeshouldnotbetoosmall,inordertopreventthecracks.1.6坡口多层焊道除打底层和盖面层外，每层增加的厚度不超过4mm。1.6groovemultilayerweldinadditiontothelayerandcoverlayer,eachlayerincreasethethicknessofnomorethan4mm.1.7立、仰、横焊电流应比平焊小10%左右，工件预热后焊接电流应比不预热时减小5%～

6、10%，采用直流电源时可交流电源时减少10%左右。1.7,upwardandhorizontalweldingcurrentshouldbesmallerthanflatweldingisabout10%,aftertheworkpiecepreheatingweldingcurrentshouldbereduced5%~10%thanwhennopreheating,usingdcpowertoacpowerreducedabout10%.http://www.taflmy.comhttp://www.xtlxlj.comhttp://www.xdnjsb.cnhtt

7、p://www.shanguo0538.com1.8接头要求全焊透的坡口焊，如不用垫板则反面施焊前应先清根露出无缺陷的金属后再行施焊。1.8jointrequirementsoffullpenetrationgroovewelding,suchasnoplateincreasesopposite,itshouldfirstcleartherootbeforeweldingmetalshownodefectsafterwelding.1.9平焊时焊条角度应依据具体情况正确选择，焊接时熔池控制酿酒设备为始终如一的形状和大小。焊条直线速度不要过