焊缝其外观质量验收规范标准

1、/焊缝及外观质量查收规范一目的Purpose建立诺信达格公司焊接产品的焊缝和外观质量查收标准Thepurposeoftheprocedureistoprovideaninspectionstandardforweldingfusion-weldedjointsqualityandcosmetic二范围Scope所有诺信达格的焊接产品的焊缝外观检验TheprocedureisapplicablefortheweldingcosmeticinspectionofallNordsonDageproducts.三定义和吻合DefinitionsandSymbols1.短弊端Shortimperfect

2、ions若是焊缝长度有100mm或更长以及在100mm长度内包含的最大数量的弊端累计长度低于25mm，那么这样的弊端能够为是短弊端。Incasewhentheweldsis100mmlongorlonger,imperfectionsareconsideredtobeshortimperfectionsif,inthe100mmwhichcontainsthegreatestnumberofimperfections,theirtotallengthislessthan25mm若是焊缝长度小于100mm,但是在总长范围内的弊端累计长度小于焊缝长度的25%，那么这样的弊端也能够为是短弊端Inca

3、sewhentheweldislessthan100mmlong,imperfectionsareconsideredtobeshortimperfectionsiftheirtotallengthislessthan25%ofthelengthoftheweld2.符号Symbols角焊缝的名义喉高nominalthroatthicknessofthefilletweldb焊接消融金属的宽度widthofweldreinforcement弊端尺寸（高度或宽度）heightorwidthofimperfection对接焊缝的名义厚度nominalbuttweldthickness壁厚或板厚/w

4、allorplatethickness角焊缝的腿长leglengthofafilletweld-焊趾的角度angleofweldtoe四参照文件NormativeReferencesISO5817:2007WeldingFusion-weldedjointsinsteel,nickel,titaniumandtheiralloys(beamweldingexcluded)QualitylevelsforimperfectionsISO6520:2007WeldingandalliedprocessesClassificationofgeometricimperfectionsinmetalli

5、cmaterialsPart1:Fusionwelding五标准等级的采纳InspectionQualityLevelSelection下表对焊接的不同样弊端进行了分类和定义，B级为最高焊接要求的检验级别，C级为正常焊接要求的检验级别，D级为较低焊接要求检验级Belowtabledefinetheweldinglimitsforimperfectionforqualitylevels.QualitylevelBcorrespondstothehighestrequirementonthefinishedweld.QualitylevelCcorrespondstothenormalrequir

6、ementonthefinishedweld.QualitylevelDcorrespondstothelowerrequirementonthefinishedweld.若是没有特别规定，除了焊缝表面不同样意有焊渣异物混淆和不同样意有为完好交融和浸透以外，所有焊接产品的检验等级为C级,拜会下面的表单Ifnoanyspecifiedexceptnoslaginclusionandlackoffusion/penetration,thequalitylevelCwillbedefaultselection.Detaildefinitionreferredtothetableasbelow.焊接弊

7、端名称ImperfectionDesignation裂纹Cracks弧坑裂纹CraterCrack表面气孔SurfacePores张口弧坑Craterpipe未熔合(未完好熔合)Lackoffusion(incompletefusion)/ISO6520-1说明厚度t查收标准D查收标准C查收标准BReferenceRemarksmmQualityLevelDQualityLevelCQualityLevelB100任何可见裂纹Anyvisualcracks=0.5不同样意不同样意不同样意NotPermittedNotPermittedNotPermitted104=0.5不同样意不同样意不同样

8、意NotPermittedNotPermittedNotPermitted2017单个气孔的最大尺寸0.5to3Maximumdimensionofasingleporefor-对接焊缝Buttweldsd=0.3s不同样意不同样意-角焊缝Filletweldsd3Maximumdimensionofasingleporefor-对接焊缝Buttweldsd=0.3s,butmax.3mmd=0.2s,butmax.3mm不同样意-角焊缝Filletweldsd=0.3a,butmax.3mmd=0.3a,butmax.3mmNotPermitted20250.5to3h3h=0.2t,but

9、max.2mmh=0.5不同样意不同样意不同样意NotPermittedNotPermittedNotPermitted焊接弊端名称ISO6520-1ImperfectionReferenceDesignation根部未焊透4021Incomplete连续咬边5011Continuousundercut5012中止咬边Intermittentundercut根凹5013Shrinkagegroove说明Remarks只适用于单边对接焊缝Onlyforsinglesidebuttwelds要求圆滑过渡Smoothtransitionisrequired.不能够连续出现Thisisnotregar

10、dedasasystematicimperfection要求圆滑过渡Smoothtransitionisrequired/厚度t查收标准D查收标准C查收标准BmmQualityLevelDQualityLevelCQualityLevelB=0.5短弊端赞同存在：不同样意不同样意ShortimperfectionsNotPermittedNotPermittedh=0.2t,butmax.2mm0.5to3短弊端赞同存在短弊端赞同存在不同样意Shortimperfections:Shortimperfections:NotPermittedh=0.2th3h=0.2t,butmax.1mmh=

11、0.1t,h=0.05t,butmax.0.5mmbutmax.0.5mm0.5to3h=0.2mm+0.1t短弊端赞同存在不同样意Shortimperfections:NotPermittedh3短弊端赞同存在短弊端赞同存在短弊端赞同存在Shortimperfections:Shortimperfections:Shortimperfections:h=0.2tbutmax.2mmh=0.1tbutmax.1mmh=0.5h=1mm+0.25b,butmax.h=1mm+0.15b,butmax.h=0.5h=1mm+0.25b,butmax.h=1mm+0.15b,butmax.h=1mm

12、+0.1b,but5mm4mmmax.3mm0.5to3h=1mm+0.6bh=1mm+0.3bh3h=1mm+1.0b,butmax.h=1mm+0.6b,butmax.h=0.5a=90a=100a=150=0.5a=90a=110a=110-Filletwelds（角焊）a1=a,a2=a焊接弊端名称ImperfectionDesignationISO6520-1参照号ISO6520-1Reference/说明厚度t查收标准D查收标准C查收标准BRemarksmmQualityLevelDQualityLevelCQualityLevelB焊瘤Overlap未焊满SaggingIncom

13、pletefilledgroove烧穿Burnthrough焊脚不对称(腿长不等)Excessiveasymmetryoffilletweld(excessiveunequalleglength)506=0.5h=0.2b不同样意不同样意NotPermittedNotPermitted5090.5to3短弊端赞同存在短弊端赞同存在不同样意511Shortimperfections:Shortimperfections:NotPermittedh=0.25th3短弊端赞同存在短弊端赞同存在短弊端赞同存在Shortimperfections:Shortimperfections:Shortimpe

14、rfections:h=0.25tbutmax.2mmh=0.1tbutmax.1mmh=0.5不同样意不同样意不同样意NotPermittedNotPermittedNotPermitted512当焊脚不等时=0.5h=2mm+0.2ah=2mm+0.15ah=2mm+0.15aIncasewhereanasymmetricfilletweldhasnotbeenprescribed焊接弊端名称ImperfectionDesignation根凹Rootconcavity根部气孔Rootporosity接头不良PoorRestart/ISO6520-1说明厚度t查收标准D查收标准C查收标准B参

15、照号RemarksmmQualityLevelDQualityLevelCQualityLevelBISO6520-1Reference515要求圆滑过渡0.5to3h=0.2mm+0.1t短弊端赞同存在不同样意SmoothtransitionisrequiredShortimperfections:NotPermittedh3短弊端赞同存在短弊端赞同存在短弊端赞同存在Shortimperfections:Shortimperfections:Shortimperfections:h=0.2t,butmax.2mmh=0.1t,butmax.1mmh=0.5局部赞同不同样意不同样意孔（如根部缺

16、少气体保护时）LocallypermittedNotPermittedNotPermittedSpongyformationattherootofaweldduetobubblingoftheweldmetalatthemomentofsolidification(e.g.lackofgasbacking)517=0.5赞同：依照接头不良出现的不同样意不同样意地址NotPermittedNotPermittedPermitted:Thelimitdependsonthetypeofimperfectionoccurredduetorestart焊接弊端名称ISO6520-1Imperfecti

17、on参照号DesignationISO6520-1Reference角焊缝填充金属过5213薄Insufficientthroatthickness角焊缝填充金属过5214厚Excessivethroatthickness电弧划伤601StrayArc飞溅602Spatter/说明厚度t查收标准DRemarksmmQualityLevelD不适用较大的熔深工艺0.5to3短弊端赞同存在NotapplicabletoprocesseswithproofofgreaterShortimperfections:depthofpenetrationh3短弊端赞同存在Shortimperfections:h=0.5不限TheactualthroatthicknessofthefilletweldisUnlimitedtoolarge-=0.5当不影响母材的性能时接受Permitted,ifthepropertiesoftheparentmetalarenotaffected-=0.5依资料的防腐化要求接受Acceptancedependsonapplication,e.g.materia