ISO6520 焊接缺欠标准

0焊接缺欠认识YHJ1焊接缺欠基础2依据标准：ISO6520-1金属熔焊中的缺陷等级分类和解释Weldingandalliedprocesses–Classificationofgeometricimperfectionsinmetallicmaterials–Part1:Fusionwelding(ISO6520-1:1998);3缺欠种类种类1：裂纹Cracks种类2：气孔Cavities种类3：夹杂Solidinclusions种类4：未熔合与未焊透Lackoffusionandpenetration种类5：外形及尺寸缺陷（几何缺陷）Imperfectshapeanddimensions种类6：混合（多重、其它）缺陷Miscellaneousimperfections4纵向裂纹Longitudinalcrack缺陷代号种类1：裂纹Cracks5种类1：裂纹Cracks横向裂纹Transversecrack6种类1：裂纹Cracks辐射状裂纹Radiatingcracks7弧坑裂纹Cratercrack种类1：裂纹Cracks8种类1：裂纹Cracks束状裂纹一组沿四周发散且断开的裂纹Groupofdisconnectedcracks9种类1：裂纹Cracks分支裂纹Branchingcracks10种类2：气孔Cavities单个气孔Gaspor11种类2：气孔Cavities密集均布气孔Uniformlydistributedporosity12种类2：气孔Cavities网状气孔Clustered(localized)porosity13种类2：气孔Cavities线状气孔Linearporosity14种类2：气孔Cavities条状气孔（气道）Elongatedcavity15种类2：气孔Cavities条虫状气孔Worm-hole16种类2：气孔Cavities表面气孔Surfacepore17种类2：气孔Cavities晶间收缩在冷却过程中纵向缩孔可能包含残留气体，从而形成的晶间收缩Interdendriticshrinkage18种类2：气孔Cavities弧坑孔穴Craterpipe19种类2：气孔Cavities收弧孔穴Endcraterpipe20种类3：固体夹杂Solidinclusions夹渣Slaginclusion3011线状夹渣：Linear3012单个夹渣：isolated21种类3：固体夹杂Solidinclusions3014网状夹渣clustered22其它夹杂302焊剂夹杂Fluxinclusion303氧化物夹杂Oxideinclusion304金属物夹杂Metallicinclusion（钨夹杂tungsten、铜夹杂copper、其它金属夹杂othermetal）23种类4：未熔合与未焊透

Lackoffusionandpenetration未熔合/Lackoffusion(不完全熔合incompletefusion)4011:lackofsidewallfusion4012:lackofinter-runfusion24种类4：未熔合未熔合/Lackoffusion4013:lackofrootfusion.25种类4：未焊透402:Lackofpenetration(incompletepenetration)实际熔深名义/要求的熔深26种类4：未焊透实际熔深名义/要求的熔深27种类4：未焊透实际熔深名义/要求的熔深28种类4：未焊透4021:Incompleterootpenetration29种类4：未熔合与未焊透403:Spiking尖峰状未焊透Extremelynon-uniformpenetrationoccuringinelectronbeamandlaserweldinggivingasawtoothappearance.Thismayincludecavities,cracks,shrinkagesetc.相当不一致的焊透发生在电波和激光焊接中，呈现出锯齿的样子，也许包括洞穴、裂纹、收缩等等30种类5：外形及尺寸缺欠（几何缺欠）Imperfectshapeanddimensions501:咬边Undercut5011:连续咬边Continuousundercut31种类5：几何缺欠5012:Intermittentundercut间歇咬边32种类5：几何缺欠5013:根部或坡口缩孔Shrinkagegroove335014:Interrunundercut层间咬边(interpassundercut)中间咬边种类5：几何缺欠34种类5：几何缺欠5015:层间间断咬边Localintermittentundercut35种类5：几何缺欠502余高过高Excessweldmetal36种类5：几何缺欠503焊缝太凸Excessiveconvexity凸面37种类5：几何缺欠504:下榻Excesspenetration5043:熔透Meltthrough38种类5：几何缺欠505:Incorrectweldtoe不规则焊趾39种类5：几何缺欠5061:Toeoverlap盖面搭边5062:Rootoverlap根部搭边40种类5：几何缺欠5071:板与板错边5072:管与管错边41种类5：几何缺欠508:Angularmisalignment角度错边42509:Sagging下垂下榻单边43Sagging平面下沉、焊缝边缘熔化下沉44510烧穿Burnthrough45Incompletelyfilledgroove未填满46种类5：几何缺欠单边47Rootconcavity根部缩孔48Poorrestart接头不良49ExcessiveweldthicknessExcessweldwidth过高过宽焊缝尺寸偏差505213Insufficientthroatthickness焊角不足51Excessivethroatthickness焊角过大52种类6：混合（多重、其它）缺陷601：电弧擦伤602：飞溅603：焊缝表面撕裂604：划痕605：打磨不到位606：焊缝打磨过多53种类6：混合（多重、其它）缺陷

MiscellaneousimperfectionsMisalignmentofoppositeruns正反焊道错位54Incorrectrootgapforfilletwelds角焊缝根部间隙55618热影响区过大Swelling焊接接头是有焊缝、熔合区和热影响区三部分组成的