焊缝及外观质量验收规范.docx
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焊缝及外观质量验收规范.docx
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焊缝及外观质量验收规范
焊缝及外观质量验收规范
一.目的Purpose
建立诺信达格公司焊接产品的焊缝和外观质量验收标准
Thepurposeoftheprocedureistoprovideaninspectionstandardforwelding–fusion-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.定义和符合DefinitionsandSymbols
1.短缺陷Shortimperfections
如果焊缝长度有100mm或更长以及在100mm长度内包含的最大数量的缺陷累计长度低于25mm,那么这样的缺陷可认为是短缺陷。
Incasewhentheweldsis100mmlongorlonger,imperfectionsareconsideredtobeshortimperfectionsif,inthe100mmwhichcontainsthegreatest
numberofimperfections,theirtotallengthislessthan25mm
如果焊缝长度小于100mm,但是在总长范围内的缺陷累计长度小于焊缝长度的25%,那么这样的缺陷也可认为是短缺陷
Incasewhentheweldislessthan100mmlong,imperfectionsareconsideredtobeshortimperfectionsiftheirtotallengthislessthan25%ofthelength
oftheweld
2.符号Symbols
a–角焊缝的名义喉高
nominalthroatthicknessofthefilletweld
b–焊接熔化金属的宽度
widthofweldreinforcement
h–缺陷尺寸(高度或宽度)
heightorwidthofimperfection
s–对接焊缝的名义厚度
nominalbuttweldthickness
t–壁厚或板厚
1.
wallorplatethickness
z–角焊缝的腿长
leglengthofafilletweld
焊趾的角度α-
toeweldangleof
四.参考文件NormativeReferences
ISO5817:
2007Welding–Fusion-weldedjointsinsteel,nickel,titaniumandtheiralloys(beamweldingexcluded)–Qualitylevelsforimperfections
ISO6520:
2007Weldingandalliedprocesses–Classificationofgeometricimperfectionsinmetallicmaterials–Part1:
Fusionwelding
五.标准等级的选用InspectionQualityLevelSelection
下表对焊接的不同缺陷进行了分类和定义,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.
QualitylevelCcorrespondstothenormalrequirementonthefinishedweld.QualitylevelDcorrespondstothelowerrequirementonthefinishedweld.
假如没有特殊规定,除了焊缝表面不允许有焊渣异物掺杂和不允许有为完全融合和渗透以外,所有焊接产品的检验等级为C级,参见下面的表单
Ifnoanyspecifiedexceptnoslaginclusionandlackoffusion/penetration,thequalitylevelCwillbedefaultselection.Detaildefinitionreferredtothe
tableasbelow.
2.
BC验收标准D验收标准焊接缺陷名称说明厚度t验收标ISO6520-
LeveLeveQualitmQualitLeveQualitImperfectioRemarkReferenc
Designatio
不允裂不允不允crack任何可见裂Anvisua>=0.100PermittedNotNotPermittedPermittedCracksNot
不允许弧坑裂纹不允许不允许>=0.5104PermittedCraterCrackNotPermittedNotNotPermitted单个气孔的最大尺寸表面气孔3to20170.5forporeMaximumdimensionPoresofasingleSurface不允许不允许s<=0.3dweldsButt--对接焊缝
PermittedPermittedNotNotawelds角焊缝Filletd<=0.3--
单个气孔的最大尺寸>3forporeofdimensionasingleMaximum
不允许3mm3mmd<=0.2s,butmax.<=0.3s,dbutmax.welds对接焊缝--ButtPermittedNot3mmmax.d<=0.3a,butweldsFillet3mmbutd<=0.3a,max.角焊缝--
开口弧坑不允许不允许<=0.2tto20253h0.5
pipePermittedCraterPermittedNotNot不允许max.1mmmax.2mmh<=0.1t,but>3h<=0.2t,butPermittedNot
不允许不允许不允许>=0.5-)未熔合(未完全熔合
PermittedNotNotNotPermittedPermittedfusionLackof
3.
fusion)(incomplete
焊接缺陷名说厚验收标验收标验收标ISO6520-
ImperfectioRemarkmQualitLeveQualitLeveQualitLeveReferenc
Designatio
不允根部未焊不允只适用于单边对接焊短缺陷允许存在>=0.402PermitteNoShorIncompletimperfectionPermittefoOnlsinglsidbutweldNomax.2m<=0.2tbuh不允许短缺陷允许存在连续咬边要求圆滑过渡短缺陷允许存在30.55011to
PermittedSmoothtransitionisrequired.imperfections:
NotShortContinuousundercutimperfections:
Short5012不能连续出现间断咬边0.1th<=0.2th<=imperfectionregardedasasystematicisThisundercutIntermittentnot1mmbutmax.<=0.2t,h<=0.05t,>3h<=0.1t,h
0.5mmbutmax.but0.5mmmax.不允许根凹短缺陷允许存在要求圆滑过渡t5013to0.53<=0.2mm+0.1hPermittedSmoothimperfections:
NotgrooveShrinkageisrequiredShorttransition
0.1th<=
短缺陷允许存在短缺陷允许存在短缺陷允许存在>3imperfections:
Shortimperfections:
imperfections:
ShortShortmax.1mm2mmmax.butbut<=h0.05tmax.<=0.1thbut<=h0.2t
0.5mmbut<=1mm+0.1b,<=1mm+0.15b,butmax.h要求圆滑过渡Smoothtransitionisrequired>=0.5对接焊缝余高过高()h<=1mm+0.25b,butmax.h
5mmmax.weldExcess10mm7mm)(metalweldbutt4
B验收标准Ct验收标准D验收标准焊接缺陷名称说明厚度ISO6520-1QualityLevelQualityLevelCDImperfectionRemarksmmQualityLevel参考号
DesignationISO6520-1
Reference)(角焊缝焊缝凸度<=1mm+0.1b,max.hbutmax.<=1mm+0.15b,h503but>=0.5<=1mm+0.25b,h
bu
3mm5mm4mmmax.convexityExcessivewelds)(fillet
焊透过大<=1mm+0.1b<=1mm+0.3bh<=1mm+0.6bhh5040.5to3
penetrationExcessbut<=1mm+0.2b,butmax.h>3h<=1mm+1.0b,butmax.h<=1mm+0.6b,
3mm5mmmax.4mm
焊缝过渡不良>=0.5welds(对接焊)505-Butt°a>=100°>=150>=90a°a
toeweldIncorrect>=0.5°°>=90a°a>=110a>=110
a2>=aFillet-(角焊)weldsa1>=a,
5.
B验收标准验收标准C说明厚度t验收标准焊接缺陷名称DISO6520-1
BLevelCQualityLevelDQualityLevelQualityImperfectionRemarksmm参考号
DesignationISO6520-1
Reference
焊瘤不允许不允许<=0.2b>=0.5506h
OverlapPermittedNotPermittedNot不允许短缺陷允许存在短缺陷允许存在未焊满
30.5509to
IncompleteShortimperfections:
PermittedSaggingimperfections:
ShortNot5110.1tfilledgroove<=h0.25th<=短缺陷允许存在短缺陷允许存在短缺陷允许存在>3imperfections:
Shortimperfections:
Shortimperfections:
Short
2mmmax.max.but<=but<=h0.1tmax.1mm0.25tbuth0.05th<=
0.5mm不允许不允许烧穿不允许>=0.5510-PermittedNotPermittedNotBurnPermittedNotthrough当焊脚不等时aa<=2mm+0.15ha<=2mm+0.15h512>=0.5h<=2mm+0.2腿长不焊脚不对称(nothasIncasewhereanasymmetricfilletweld)等prescribedbeenasymmetryExcessive
weldoffillet
unequal(excessive
length)leg
6.
B验收标准C验收标准t验收标准D焊接缺陷名称说明厚度ISO6520-1
BLevelQualityQualityLevelCQualityImperfectionRemarksmmLevelD参考号
DesignationISO6520-1
Reference不允许根凹短缺陷允许存在要求圆滑过渡t515<=0.2mm+0.10.5to3hPermittedrequiredSmoothtransitionisNotRootconcavityimperfections:
Short0.1th<=
短缺陷允许存在短缺陷允许存在短缺陷允许存在>3imperfections:
Shortimperfections:
ShortShortimperfections:
0.05t,<=max.1mmh<=0.1t,buthmax.2mm0.2t,h<=but
0.5mmmax.but不允许焊缝金属凝固时,在焊缝根部形成的多孔性局部允许根部气孔不允许>=0.5516气孔(如根部缺少气体保护时)PermittedporosityRootLocallyNotNotpermittedPermitted
toofdueweldaroottheatformationSpongy
ofweldtheofbubblingmomenttheatmetal
backing)(e.g.solidificationoflackgas7.
不允许不允许允许:
根据接头不良出现517>=0.5接头不良
的位置PermittedNotNotPermittedRestartPoorPermitted:
theonThelimitdependsimperfectiontypeofrestarttooccurreddue
验收标准t验收标准D焊接缺陷名称说明厚度ISO6520-1QualityImperfectionRemarksmmQualityLevelD参考号
DesignationISO6520-1
验收标准CQualityLevelC
BBLevel
Reference不适用较大的熔深工艺不允许短缺陷允许存在角焊缝填充金属过短缺陷允许存在30.5to5213薄PermittedShortimperfections:
NotShortimperfections:
greaterproofofNotapplicabletoprocesseswith
throatInsufficient0.2mmh<=0.2mm<=hdepthofpenetration
thickness短缺陷允许存在不允许短缺陷允许存在>3imperfections:
ShortPermittedNotShortimperfections:
0.3mm+0.1a,<=hh<=0.3mm+0.1a,2mmmax.butmax.1mmbut
不限角焊缝填充金属过角焊缝实际喉高过大1mm+0.15a,h>=0.5h5214<=1mm+0.2a,<=厚UnlimitedTheactualthroatthicknessofthefilletweldis1mmbutmax.but4mmmax.throatExcessivelargetoo
thickness8.不允许电弧划伤当不影响母材的性能时接不允许>=0.5-601受PermittedNotPermittedStrayArcNotpropertiesPermitted,ifthenotoftheparentmetalare
affected不允许依材料的防腐蚀要求接受飞溅不允许>=0.5-602PermittedSpatterNotonPermittedNotAcceptancedepends
material,,e.g.application
protectioncorrosion
9.
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- 关 键 词:
- 焊缝 外观 质量 验收 规范