asme Ⅲ NF 5360 f(1) For material 3/8 in. and less nominal thickness undercut depth of 1/32 in. on one side of the member for the full length of the weld or 1/32 in. on one side for one-helf the length of the weld and 1/16 in. for one-fourth the length of the weld on the same side of the member is acceptable. For members welded on both sides where undercut exists in the same plane of a member the cumulative lengths of undercut are limited to the lengths of undercut allowed on one side. Melt-through that results in a hole in the base metal is unacceptable.
在2004中文中的翻译如下：
当材料公称厚度小于或等于3/8 in. 时，对于整个焊缝长度在焊件的单个面上允许咬边深度为1/32 in.（0.8mm）,或者一半长度焊缝长度在单面上允许咬边深度为1/32 in.。对于1/4焊缝长度在焊缝的同一面上允许1/16in.。对于双面焊接焊件，当咬边存在于焊件的同一平面上，则咬边的累计长度不得超过单面所允许的长度，如果熔穿在母材上造成孔洞是不允许的。
对于以上的翻译很难看懂，在根据GB150的理解下，我重新翻译如下：
当材料公称厚度小于或等于3/8 in. 时，对于单面焊缝允许咬边深度为1/32 in.（0.8mm）,累计长度不的超过焊缝长度,或者允许单侧咬边深度为1/32 in.，单侧累计不超过焊缝一半长度。同一侧上允许咬边深度1/16in.，咬边累计不超过1/4焊缝长度。对于双面焊，当咬边存在于焊件的同一侧面上，则咬边的累计长度不得超过单面所允许的长度。如果熔穿在母材上造成孔洞是不允许的。
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发表于 2009-12-22 20:53:45