焊縫及其外觀質(zhì)量驗收規(guī)范標準

1、/焊縫及外觀質(zhì)量驗收規(guī)范目的Purpose建立諾信達格公司焊接產(chǎn)品的焊縫和外觀質(zhì)量驗收標準The purpose of the procedure is to provide an inspection standard for weldin - g fusion-welded joints quality and cosmetic范圍 Scope 所有諾信達格的焊接產(chǎn)品的焊縫外觀檢驗 The procedure is applicable for the welding cosmetic inspection of all Nordson Dage products.定義和符合 Defini

2、tions and Symbols1短缺陷Short imperfections如果焊縫長度有100mm或更長以及在100mm長度內(nèi)包含的最大數(shù)量的缺陷累計長度低于25mm，那么這樣的缺陷 可認為是短缺陷。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如果焊縫長度小于100mm,但是在總長范圍內(nèi)的缺陷累計長度小于焊縫長度的25%， 那么這樣的缺陷也可認為是短缺陷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.符號 Symbolsa -角焊縫的名義喉高 nominal throat thickness of the fillet

4、 weldb -焊接熔化金屬的寬度 width of weld reinforcementh - 缺陷尺寸（高度或?qū)挾龋﹉eight or width of imperfections -對接焊縫的名義厚度nominal butt weld thicknesst -壁厚或板厚wall or plate thickness z -角焊縫的腿長leg length of a fillet weld a 焊趾的角度angle of weld toe四參考文件 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 五標準等級的選用 Inspection Quality Level Selection下表對焊接的不同缺陷進行了分類和定義，B級為最高焊接要

6、求的檢驗級別，C級為正常焊接要求的檢驗級別，D級為較低焊接要求檢驗級 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.假如沒有特殊規(guī)定，除了焊縫表面不允許有焊渣異物摻雜和不允許有為完全融合和滲透以外，所有焊接產(chǎn)品的檢驗等級為C級，參見下面的表單 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說明Remarks裂紋Cracks100任何可見裂紋

8、Any visual cracks弧坑裂紋104Crater Crack焊接缺陷名稱ISO6520-1Imperfecti onReferenceDesignati on表面氣孔2017Surface Pores>g> .*»單個氣孔的最大尺寸Maximum dimension of a single pore for-對接焊縫Butt welds -角焊縫Fillet welds單個氣孔的最大尺寸Maximum dimension of a single pore for -對接焊縫Butt welds-角焊縫 Fillet welds開口弧坑2025Crater pi

9、pe未熔合(未完全熔合)Lack of fusion(incomplete fusion)厚度t驗收標準D mm Quality Level D驗收標準C驗收標準BQuality Level CQuality Level B>=0.5不允許不允許不允許Not PermittedNot PermittedNot Permitted>=0.5不允許不允許Not Permitted不允許Not PermittedNot Permitted0.5 to 3>3d <=0.3 sd<= 0.3 a不允許Not Permitted不允許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 不允許Not Permitted不允許Not Permitted不允許Not Permitted>3h <=0.2t, but max.2mmh <=0.1t, but max.lmm不允許Not Permitted>=0.5不允許Not Permitted不允許Not Permitted不允許Not Permitted焊接缺陷名稱Imperfe

11、cti on Designation 根 部未焊透In completeISO6520-1Refere nee4021說明Remarks只適用于單邊對接焊縫Only for single side butt welds連續(xù)咬邊5011要求圓滑過渡Continuous undercut5012間斷咬邊Smooth transition is required.不能連續(xù)出現(xiàn)This is not regarded as a systematic imperfectionIntermittent undercut根凹5013要求圓滑過渡Shrinkage grooveSmooth transitio

12、n is required1J要求圓滑過渡 Smooth transition is required余高過高(對接焊縫)Excess weld metal( buttweld)/厚度tmm驗收標準DQuality Level D驗收標準CQuality Level C驗收標準BQuality Level B>=0.5短缺陷允許存在：Short imperfections h <=0.2t, but max.2mm不允許Not Permitted不允許Not Permitted0.5 to 3短缺陷允許存在短缺陷允許存在不允許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短缺陷允許存在Shortimperfections: h <= 0.1t短缺陷允許存在Short不允許Not Permitted>3短缺陷允許存在Shortimperfections: h <= 0.1t短缺陷允許存在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焊接缺陷名稱Imperfecti on Designati onISO6520-1參考號ISO6520-1Refere nee說明Remarks焊縫凸度（角焊縫）Excessive convexity（fillet welds）焊透過大504Exce

15、ss penetration焊縫過渡不良Incorrect weld toe505Butt welds （對接焊）Fillet welds （角焊）a1 >=a, a2>=a厚度t驗收標準D mm Quality Level D驗收標準CQuality Level C驗收標準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焊接缺陷名稱Imperfecti on Designati on焊瘤OverlapbISO6520-1參考號ISO6520-1Reference506說明Remarks未焊滿509Sagging In complete511filled g

17、roove燒穿510 Burn through焊腳不對稱(腿長不512等)Excessive asymmetry of fillet weld(excessive unequal leg length)當焊腳不等時In case where an asymmetric fillet weld has not been prescribed厚度t驗收標準D mm Quality Level D驗收標準CQuality Level C>=0.5 h <=0.2b不允許Not Permitted驗收標準BQuality Level B不允許Not Permitted0.5 to 3短缺陷

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

19、tions: h <= 0.05t but max.0.5mm不允許NotPermitted h <=2mm+0.15焊接缺陷名稱Imperfecti on Designati onISO6520-1參考號ISO6520-1Reference說明Remarks根凹Root concavity515要求圓滑過渡Smooth transition is required根部氣孔Root porosity516焊縫金屬凝固時，在焊縫根部形成的多孔性氣 孔(如根部缺少氣體保護時)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)接頭不良517Poor Restart厚度tmm驗收標準DQuality Level D驗收標準CQuality Level C驗收標準BQuality Level B0.5 to 3h <=0.2mm+0.1 t短缺陷允許存在Short imperfections:h <= 0.1t不允許Not Permitted>3短缺陷允許存在Shortimperfections: h <= 0.2t,but max.2mm短缺陷允

21、許存在Shortimperfections: h <= 0.1t,but max.1mm短缺陷允許存在Short imperfections: h <= 0.05t, but max. 0.5mm>=0.5局部允許不允許不允許Locally permittedNot PermittedNot Permitted>=0.5允許：根據(jù)接頭不良出現(xiàn)的位置不允許不允許Permitted:The limit depends on the type of imperfection occurred due to restartNot PermittedNot Permitted焊接缺陷名稱ImperfectionDesignati onISO6520-1 參考號ISO6520-1Reference說明Remarks角焊縫填充金屬過薄Insufficient throatthick ness5213不適用較大的熔深工藝Not applicable to processes with proof of greater depth of penetration角焊縫填充金屬過厚Excessive throatthick ness52