页眉内容1页脚内容焊接基础英语学习1、焊接的分类:⑴熔化焊接(Fusionwelding)如:手工电弧焊(SMAW:Shieldedmetalarcwelding)埋弧焊(SAW:Submergedarcwelding)钨极惰性气体保护电弧焊(TIG:TungstenInert-Gasarcwelding)熔化极惰性气体保护电弧焊(MIG:metalInert-gasarcwelding)⑵压力焊接(Pressurewelding)如:冷压焊(Coldwelding)摩擦焊(Frictionwelding)扩散焊(Diffusionwelding)爆炸焊(Explosivewelding)⑶钎焊(Soldering(软钎焊)/Brazing(硬钎焊))如:电阻钎焊(resistancebrazing)火焰钎焊(torchbrazing/soldering)其它常用焊接:热压焊:hotpressurewelding电渣焊:electroslagwelding电子束焊:electronbeamwelding电阻焊:resistancewelding点焊:Spotweld注释:除非有特殊工作的可能要多了解其它的,一般焊接的基本英语知识掌握这些就可以了,多了反而不好记忆。焊缝接头(Weldedjoint)1、常用焊接接头:对接接头(Buttjoint);搭接接头(Lapjoint);角接接头(Filitweld);T型接头(T-joint/Teejoint);最常用的是:对接接头(Buttjointisthemostusedone)2、对接接头:两焊件端面相对平行的接头(Thejointwhoseweldingsuefacesofbothweldingpartsareparalleliscalledbuttjoint.)2.1不开坡口的对接接头(Buttjointwithoutgroove)2.1.1薄钢板的焊接(Weilingofthinsteelsheets)如果产品在厚度方向上不要求全焊透,可进行单面焊接,应必须保证焊缝的计算厚度H≥0.7δ,δ为板厚。如果要求产品在整个厚度上全部焊透,可在焊缝背面用碳弧气刨清跟后再进行焊接,即形成不开坡口的双面焊接对接接头。(Iftheproductdoesn’tneedfullpenetrationofwelding,wecantakesingle-sidewelding,andmustmakesurethatthecaculatingthicknessismorethanorequalto0.7δ(δisthethicknessofsteelsheets),Iffullpenetrationofweldingneeded,wecanusecarbonarcgougingtobackchippingatthebackofweld,afterwhichweidingcanbetaken,thanthedouble-facedweldingbuttjointwithoutgrooveisformed.)2.1.2厚钢板的焊接(Weilingofthicksteelsheets)开坡口的对接接头,用于钢板较厚而需要全焊透的焊件。(Buttjointwithgrooveisusedforthickweldingpartswhichisneededfullpenetrationofwelding)坡口(Groove)页眉内容2页脚内容1.坡口的几何尺寸(Geometricaldimensionofgroove)1.1坡口面(Grooveface/surface)焊件的坡口表面叫坡口面(Thesurfaceofgrooveisnamedgrooveface)1.2坡口面的角度和坡口角度(groovefaceangleandgrooveangle)焊件表面的垂直面与坡口之间的夹角叫做坡口面角度(Theanglebetweentheverticalsurfaceoftheweldingpartandthegrooveiscalledgroovefaceangle.两个坡口之间的角度叫做坡口角度(Theanglebetweenthetwogroovefacesiscalledgrooveface).1.3根部间隙(Rootopening/clearance)在焊接前,接头根部之间留的预留的空隙叫根部间隙,根部间隙的作用在焊接打底焊道时,能保障根部可以焊透。(Theclearanceobligatedforjointbeforeweldingiscalledrootopning,whosefunctionistokeeptherootcanbefullpenetrationweldedwhenbackingweldiswelded).1.4钝边(Rootface)焊件开坡口时,沿焊件方向未开坡口的端面部分叫钝边。(Whengrooveismade,thefacewithoutgroovealongtheweidingpartdirectioniscalledrootface)1.5根部半径(Rootradius)在J型、U型坡口底部的半径叫根部半径。(TheradiusatthebottomoftheJ-grooveorV-grooveiscalledrootradius).1.6坡口的形式:根据坡口形状的不同,长用的有:I型(不开坡口),V型,X型,U型;(Forthedifferentofgrooveshape,wecanclassifythegroovemainlyintoI-groove(withoutgroove),v-groove,X-groove,U-groove.)V型坡口是最常用的坡口形式,便于加工,焊接时为单面焊,不用翻转焊件,但焊后容易变形。(V-grooveisthemostusedone.whichiseasytomachineandnoturnisneeded,butdistortioniseasytoform)1.7坡口的加工常用方法:氧气切割(oxygencutting),碳弧气刨(carbonarcgouging),刨削(p...