焊缝及其外观质量验收规范标准

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2024年6月22日发(作者：)

焊缝及其外观质量查收规范标准

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焊缝及外观质量查收规范

一．目的

Purpose

成立诺信达格企业焊接产品的焊缝和外观质量查收标准

The purpose of the procedure is to provide an inspection standard for welding–fusion-welded joints quality and cosmetic

二．范围

Scope

全部诺信达格的焊接产品的焊缝外观查验

The procedure is applicable for the welding cosmetic inspection of all Nordson Dage products.

三．定义和切合

Definitions and Symbols

1. 欠缺点 Short imperfections

假如焊缝长度有 100mm 或更长以及在 100mm 长度内包括的最大数目的缺点累计长度低于

25mm，那么这样的缺点可以为是欠缺点。

In case when the welds is 100mm long or longer, imperfections are considered to be short imperfections if, in the 100mm which contains the greatest

number of imperfections , their total length is less than 25mm

假如焊缝长度小于 100mm,可是在总长范围内的缺点累计长度小于焊缝长度的

25%，那么这样的缺点也可以为是欠缺点

In case when the weld is less than 100mm long, imperfections are considered to be short imperfections if their total length is less than 25% of the length

of the weld

2. 符号 Symbols

a – 角焊缝的名义喉高

nominal throat thickness of the fillet weld

b – 焊接融化金属的宽度

width of weld reinforcement

h – 缺点尺寸（高度或宽度）

height or width of imperfection

s – 对接焊缝的名义厚度

nominal butt weld thickness

t –壁厚或板厚

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焊缝及其外观质量查收规范标准

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wall or plate thickness

z – 角焊缝的腿长

leg length of a fillet weld

α - 焊趾的角度 angle

of weld toe

四．参照文件

Normative References

ISO 5817:2007 Welding –Fusion-welded joints in steel, nickel, titanium and their alloys( beam welding excluded)–Quality levels for imperfections

ISO 6520:2007 Welding and allied processes–Classification of geometric imperfections in metallic materials –Part 1: Fusion welding

Inspection Quality Level Selection

五．标准等级的采用

下表对焊接的不一样缺点进行了分类和定义， B 级为最高焊接要求的查验级别， C 级为正常焊接要求的查验级别， D 级为较低焊接要求查验级 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 lower requirement on the finished weld.

若是没有特别规定，除了焊缝表面不一样意有焊渣异物混杂和不一样意有为完整交融和浸透之外，全部焊接产品的查验等级为

C 级,拜见下边的表单

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.

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本文标签： 焊缝焊接缺点