焊缝及其外观质量验收规范标准

1、/焊缝及外观质量验收规范目的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The purpose of the procedure is to provide an inspection standard for weldin - g fusion-welded joints quality and cosmetic范围 Scope 所有诺信达格的焊接产品的焊缝外观检验 The procedure is applicable for the welding cosmetic inspection of all Nordson Dage products.定义和符合 Defini

2、tions and Symbols1短缺陷Short imperfections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。In case when the welds is 100mm long or Ion ger, imperfecti ons are con sidered to be short imperfections if, in the 100mm which contains the greatest number of imperfections , their total length i

3、s less than 25mm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In case when the weld is less than 100mm Iong, imperfections are considered to be short imperfections if their total length is less than 25% of the length of the weld2.符号 Symbolsa -角焊缝的名义喉高 nominal throat thickness of the fillet

4、 weldb -焊接熔化金属的宽度 width of weld reinforcementh - 缺陷尺寸（高度或宽度）height or width of imperfections -对接焊缝的名义厚度nominal butt weld thicknesst -壁厚或板厚wall or plate thickness z -角焊缝的腿长leg length of a fillet weld a 焊趾的角度angle of weld toe四参考文件 Normative ReferencesISO 5817:2007 Welding - Fusion-welded joints in ste

5、el, nickel, titanium and their alloys( beam welding excluded) - Quality levels for imperfectionsISO 6520:2007 Welding and allied processes - Classification of geometric imperfections in metallic materials - Part 1: Fusion welding 五标准等级的选用 Inspection Quality Level Selection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

6、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 Below table define the welding limits for imperfection for quality levels. Quality level B corresponds to the highest requirement on the finished weld.Quality level C corresponds to the normal requirement on the finished weld. Quality level D corresponds to the low

7、er requirement on the finished weld.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 If no any specified except no slag inclusion and lack of fusion / penetration, the quality level C will be default selection. Detail definition referred to the table as below说明Remarks裂纹Cracks100任何可见裂纹

8、Any visual cracks弧坑裂纹104Crater Crack焊接缺陷名称ISO6520-1Imperfecti onReferenceDesignati on表面气孔2017Surface Pores>g> .*»单个气孔的最大尺寸Maximum dimension of a single pore for-对接焊缝Butt welds -角焊缝Fillet welds单个气孔的最大尺寸Maximum dimension of a single pore for -对接焊缝Butt welds-角焊缝 Fillet welds开口弧坑2025Crater pi

9、pe未熔合(未完全熔合)Lack of fusion(incomplete fusion)厚度t验收标准D mm Quality Level D验收标准C验收标准BQuality Level CQuality Level B>=0.5不允许不允许不允许Not PermittedNot PermittedNot Permitted>=0.5不允许不允许Not Permitted不允许Not PermittedNot Permitted0.5 to 3>3d <=0.3 sd<= 0.3 a不允许Not Permitted不允许Not Permitted0.5 to

10、3d <=0.3s, but max. 3mmd<= 0.3a, but max. 3mmh <=0.2td <=0.2s, but max. 3mm d<= 0.3a, but max. 3mm 不允许Not Permitted不允许Not Permitted不允许Not Permitted>3h <=0.2t, but max.2mmh <=0.1t, but max.lmm不允许Not Permitted>=0.5不允许Not Permitted不允许Not Permitted不允许Not Permitted焊接缺陷名称Imperfe

11、cti on Designation 根 部未焊透In completeISO6520-1Refere nee4021说明Remarks只适用于单边对接焊缝Only for single side butt welds连续咬边5011要求圆滑过渡Continuous undercut5012间断咬边Smooth transition is required.不能连续出现This is not regarded as a systematic imperfectionIntermittent undercut根凹5013要求圆滑过渡Shrinkage grooveSmooth transitio

12、n is required1J要求圆滑过渡 Smooth transition is required余高过高(对接焊缝)Excess weld metal( buttweld)/厚度tmm验收标准DQuality Level D验收标准CQuality Level C验收标准BQuality Level B>=0.5短缺陷允许存在：Short imperfections h <=0.2t, but max.2mm不允许Not Permitted不允许Not Permitted0.5 to 3短缺陷允许存在短缺陷允许存在不允许Short imperfections:Short im

13、perfections:Not Permittedh <= 0.2th <= 0.1t h <=0.1 t,>3h <=0.2 t, but max. 1 mmbut max. 0.5mmh <=0.05 t, butmax. 0.5mm0.5 to 3h <=0.2mm+0.1 t短缺陷允许存在Shortimperfections: h <= 0.1t短缺陷允许存在Short不允许Not Permitted>3短缺陷允许存在Shortimperfections: h <= 0.1t短缺陷允许存在imperfections: h &l

14、t;= 0.2tbut max.1mmShort imperfections: h <=but max. 2mm0.05t but max.0.5mm>=0.5h <=1mm+0.25b, but max.h <=1mm+0.15b, but max.h <=1mm+0.1b,but10mm7mmmax. 5mm503焊接缺陷名称Imperfecti on Designati onISO6520-1参考号ISO6520-1Refere nee说明Remarks焊缝凸度（角焊缝）Excessive convexity（fillet welds）焊透过大504Exce

15、ss penetration焊缝过渡不良Incorrect weld toe505Butt welds （对接焊）Fillet welds （角焊）a1 >=a, a2>=a厚度t验收标准D mm Quality Level D验收标准CQuality Level C验收标准BQuality Level B>=0.5h <=1mm+0.25b, but max.5mmh <=1mm+0.15b, but max.4mmh <=1mm+0.1b, but max.3mm0.5 to 3h <=1mm+0.6bh <=1mm+0.3bh <=1

16、mm+0.1b>3h <=1 mm+1 0b, but max5mmh <=1mm+0.6b, but max.4mmh <=1mm+0.2b, but max.3mm>=0.5a >=90a>=100a >=150°>=0.5a >=90a>=110 °a>=110焊接缺陷名称Imperfecti on Designati on焊瘤OverlapbISO6520-1参考号ISO6520-1Reference506说明Remarks未焊满509Sagging In complete511filled g

17、roove烧穿510 Burn through焊脚不对称(腿长不512等)Excessive asymmetry of fillet weld(excessive unequal leg length)当焊脚不等时In case where an asymmetric fillet weld has not been prescribed厚度t验收标准D mm Quality Level D验收标准CQuality Level C>=0.5 h <=0.2b不允许Not Permitted验收标准BQuality Level B不允许Not Permitted0.5 to 3短缺陷

18、允许存在Short短缺陷允许存在imperfections: h <= 0.25tShort imperfections: h短缺陷允许存在Short<=0.11短缺陷允许存在>3imperfections: h <= 0.25tShort imperfections: hbut max. 2mm<=0.1t but max.lmm>=0.5不允许Not Permitted>=0.5 h <=2mm+0.2 a不允许Not Permitted h<=2mm+0.15 a不允许Not Permitted短缺陷允许存在Shortimperfec

19、tions: h <= 0.05t but max.0.5mm不允许NotPermitted h <=2mm+0.15焊接缺陷名称Imperfecti on Designati onISO6520-1参考号ISO6520-1Reference说明Remarks根凹Root concavity515要求圆滑过渡Smooth transition is required根部气孔Root porosity516焊缝金属凝固时，在焊缝根部形成的多孔性气 孔(如根部缺少气体保护时)Spongy formation at the root of a weld due to bubbling o

20、f the weld metal at the moment of solidification (e.g. lack of gas backing)接头不良517Poor Restart厚度tmm验收标准DQuality Level D验收标准CQuality Level C验收标准BQuality Level B0.5 to 3h <=0.2mm+0.1 t短缺陷允许存在Short imperfections:h <= 0.1t不允许Not Permitted>3短缺陷允许存在Shortimperfections: h <= 0.2t,but max.2mm短缺陷允

21、许存在Shortimperfections: h <= 0.1t,but max.1mm短缺陷允许存在Short imperfections: h <= 0.05t, but max. 0.5mm>=0.5局部允许不允许不允许Locally permittedNot PermittedNot Permitted>=0.5允许：根据接头不良出现的位置不允许不允许Permitted:The limit depends on the type of imperfection occurred due to restartNot PermittedNot Permitted焊接缺陷名称ImperfectionDesignati onISO6520-1 参考号ISO6520-1Reference说明Remarks角焊缝填充金属过薄Insufficient throatthick ness5213不适用较大的熔深工艺Not applicable to processes with proof of greater depth of penetration角焊缝填充金属过厚Excessive throatthick ness52