焊缝及其外观质量验收规范标准

焊及/、丿外/〉观焊及/、丿外/〉观27^量^查I收范’标'■准#/8//焊缝及外观质量查收规范・目的Purpose成立诺信达格企业焊接产品的焊缝和外观质量查收标准Thepurposeoftheprocedureistoprovideaninspectionstandardforwelding一fusion-weldedjointsqualityandcosmetic・范围Scope全部诺信达格的焊接产品的焊缝外观查验TheprocedureisapplicablefortheweldingcosmeticinspectionofallNordsonDageproducts.・定义和切合DefinitionsandSymbols欠缺点Shortimperfections假如焊缝长度有100mm或更长以及在100mm长度内包括的最大数目的缺点累计长度低于25mm，那么这样的缺点可以为是欠缺点。Incasewhentheweldsis100mmlongorlonger,imperfectionsareconsideredtobeshortimperfectionsif,inthe100mmwhichcontainsthegreatestnumberofimperfections,theirtotallengthislessthan25mm假如焊缝长度小于100mm,可是在总长范围内的缺点累计长度小于焊缝长度的25%，那么这样的缺点也可以为是欠缺点Incasewhentheweldislessthan100mmlong,imperfectionsareconsideredtobeshortimperfectionsiftheirtotallengthislessthan25%ofthelengthoftheweld符号Symbolsa-角焊缝的名义喉高nominalthroatthicknessofthefilletweldb-焊接融化金属的宽度widthofweldreinforcementh-缺点尺寸（高度或宽度）heightorwidthofimperfections-对接焊缝的名义厚度nominalbuttweldthicknesst-壁厚或板厚//wallorplatethicknessz-角焊缝的腿长leglengthofafilletwelda-焊趾的角度angleofweldtoe四•参照文件NormativeReferencesISO5817:2007Welding一Fusion-weldedjointsinsteel,nickel,titaniumandtheiralloys(beamweldingexcluded)一QualitylevelsforimperfectionsISO6520:2007Weldingandalliedprocesses一Classificationofgeometricimperfectionsinmetallicmaterials一Part1:Fusionwelding五•标准等级的采用InspectionQualityLevelSelection下表对焊接的不一样缺点进行了分类和定义，B级为最高焊接要求的查验级别，C级为正常焊接要求的查验级别，D级为较低焊接要求查验级Belowtabledefinetheweldinglimitsforimperfectionforqualitylevels.QualitylevelBcorrespondstothehighestrequirementonthefinishedweld.QualitylevelCcorrespondstothenormalrequirementonthefinishedweld.QualitylevelDcorrespondstothelowerrequirementonthefinishedweld.若是没有特别规定，除了焊缝表面不一样意有焊渣异物混杂和不一样意有为完整交融和浸透之外，全部焊接产品的查验等级为C级，拜见下边的表单Ifnoanyspecifiedexceptnoslaginclusionandlackoffusion/penetration,thequalitylevelCwillbedefaultselection.Detaildefinitionreferredtothetableasbelow・//焊接缺点名称ImperfectionDesignation裂纹CracksISO6520-1Reference说明Remarks厚度tmm查收标准DQualityLevelD查收标准CQualityLevelC查收标准BQualityLevelB100弧坑裂纹CraterCrack104任何可见裂纹Anyvisualcracks>=0.5不一样意NotPermitted>=0.5不一样意NotPermitted不一样意NotPermitted不一样意NotPermitted表面气孔2017SurfacePores单个气孔的最大尺寸Maximumdimensionofasingleporefor--对接焊缝Buttwelds--角焊缝Filletwelds单个气孔的最大尺寸Maximumdimensionofasingleporefor--对接焊缝Buttwelds--角焊缝Filletwelds不一样意NotPermitted不一样意NotPermitted张口弧坑Craterpipe未熔合(未完整熔合)Lackoffusion(incompletefusion)20250.5to3d<=0.3sd<=0.3a—>3d<=0.3s,butmax.3mmd<=0.3a,butmax.3mm0.5to3h<=0.2t不一样意NotPermitted不一样意NotPermitted>3h<=0.2t,butmax.2mm>=0.5不一样意NotPermittedd<=0.2s,butmax.3mmd<=0.3a,butmax.3mm不一样意NotPermittedh<=0.1t,butmax.lmm不一样意NotPermitted不一样意NotPermitted不一样意NotPermitted不一样意NotPermitted不一样意NotPermitted//焊接缺点名称ISO6520-1ImperfectionReferenceDesignation说明Remarks厚度tmm查收标准DQualityLevelD查收标准CQualityLevelC查收标准BQualityLevelB根部未焊透4021Incomplete只合用于单边对接焊缝Onlyforsinglesidebuttwelds连续咬边Continuousundercut中断咬边Intermittentundercut根凹Shrinkagegroove余高过高（对接焊缝）Excessweldmetal(buttweld)501150125013要求圆滑过渡Smoothtransitionisrequired.不可以连续出现Thisisnotregardedasasystematicimperfection要求圆滑过渡Smoothtransitionisrequired1—1\Jt〜4i0要求圆滑过渡SmoothtransitionisrequiredLr>=0.5欠缺点同意存在:Shortimperfectionsh<=0.2t,butmax.2mm不一样意不一样意NotPermittedNotPermitted0.5to3欠缺点同意存在Shortimperfections:h<=0.2t>3h<=0.2t,butmax.1mm0.5to3h<=0.2mm+0.1t>3>=0.5欠缺点同意存在Shortimperfections:h<=0.1th<=0.1t,butmax.0.5mm欠缺点同意存在Shortimperfections:h<=0.1t不一样意NotPermittedh<=0.05t,butmax.0.5mm不一样意NotPermitted欠缺点同意存在欠缺点同意存在欠缺点同意存在Shortimperfections:h<=0.2tbutmax.2mmShortimperfections:h<=0.1tbutmax.1mmShortimperfections:h<=0.05tbutmax.0.5mmh<=lmm+0.25b,butmax.10mmh<=lmm+0.15b,butmax.7mmh<=1mm+0.1b,butmax.5mm焊缝凸度（角焊缝）Excessiveconvexity（filletwelds）503>=0.5h<=lmm+0.25b,butmax.5mmh<=lmm+0.15b,butmax.4mmh<=lmm+0.1b,butmax.3mm焊透过大Excesspenetration5040.5to3>3h<=lmm+0.6bh<=lmm+0.3bh<=lmm+0.1bh<=lmm+1.0b,butmax.5mmh<=lmm+0.6b,butmax.4mmh<=lmm+0.2b,butmax.3mm焊缝过渡不良Incorrectweldtoe焊缝凸度（角焊缝）Excessiveconvexity（filletwelds）503>=0.5h<=lmm+0.25b,butmax.5mmh<=lmm+0.15b,butmax.4mmh<=lmm+0.1b,butmax.3mm焊透过大Excesspenetration5040.5to3>3h<=lmm+0.6bh<=lmm+0.3bh<=lmm+0.1bh<=lmm+1.0b,butmax.5mmh<=lmm+0.6b,butmax.4mmh<=lmm+0.2b,butmax.3mm焊缝过渡不良Incorrectweldtoe505Buttwelds（对接焊）>=0.5a>=90a>=100a>=150>=0.5a>=90a>=110a>=110焊接缺点名称ISO6520-1说明厚度t查收标准D:查收标准C查收标准BImperfection参照号RemarksmmQualityLevelDQualityLevelCQualityLevelBDesignationISO6520-1ReferenceFilletwelds（角焊）al>=a,a2>=a焊接缺点名称ISO6520-1说明厚度t查收标准D查收标准C查收标准BImperfection参照号RemarksmmQualityLevelDQualityLevelCQualityLevelBDesignationISO6520-1Reference//506>=0.5h<=0.2b焊瘤Overlap不一样意NotPermitted不一样意NotPermitted未焊满SaggingIncompletefilledgroove5095110.5to3>3欠缺点同意存在Shortimperfections:h<=0.25t欠缺点同意存在Shortimperfections:h<=0.25tbutmax.2mm欠缺点同意存在Shortimperfections:h<=0.1t欠缺点同意存在Shortimperfections:h<=0.1tbutmax.1mm不一样意NotPermitted烧穿Burnthrough焊脚不对称(腿长不等)Excessiveasymmetryoffilletweld(excessiveunequalleglength)510512当焊脚不等时Incasewhereanasymmetricfilletweldhasnotbeenprescribed>=0.5不一样意NotPermitted>=0.5h<=2mm+0.2a不一样意NotPermittedh<=2mm+0.15a欠缺点同意存在Shortimperfections:h<=0.05tbutmax.0.5mm不一样意NotPermittedh<=2mm+0.15a//焊接缺点名称ISO6520-1说明厚度t查收标准D查收标准C查收标准BImperfection参照号RemarksmmQualityLevelDQualityLevelCQualityLevelBDesignationISO6520-1Reference根凹Rootconcavity515要求圆滑过渡Smoothtransitionisrequired0.5to3h<=0.2mm+0.1t欠缺点同意存在Shortimperfections:h<=0.1t不一样意NotPermitted根部气孔Rootporosity接头不良PoorRestart516517>3欠缺点同意存在Shortimperfections:h<=0.2t,butmax.2mm欠缺点同意存在Shortimperfections:h<=0.1t,butmax.1mm欠缺点同意存在Shortimperfections:h<=0.05t,butmax.0.5mm焊缝金属凝结时，在焊缝根部形成的多孔性气孔(如根部缺乏气体保护时)Spongyformationattherootofaweldduetobubblingoftheweldmetalatthemomentofsolidification(e.g.lackofgasbacking)>=0.5局部同意Locallypermitted不一样意NotPermitted不一样意NotPermitted>=0.5同意：依据接头不良出现的地点Permitted:Thelimitdependsonthetypeofimperfectionoccurredduetorestart不一样意NotPermitted不一样意NotPermitted//焊接缺点名称ISO6520-1说明Imperfection参照号RemarksDesignationISO6520-1Reference厚度t查收标准DmmQualityLevelDQualityLevelCQualityLevelB角焊缝填补金属过5213薄Insufficientthroatthickness不合用较大的熔深工艺Notappli