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发表于 2008-4-24 22:55
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来自: 中国山东烟台
据ABS Rules Part2 chapter4 section 1
5.9 Back Gouging
Except as permitted in 2-4-1/7.3 chipping,grinding,arc-air
gouging or other suitable methods are to be employed at
the root or underside of the weld to obtain sound metal
before applying subsequent beads for all full-penetration welds.
When arc-air gouging is employed, a selected technique is to
be used so that carbon buildup and burning of the welds or
base metal is minimized.Quenched and tempered steels
are not to be flame gouged.
这是我所知道的船级社的要求,简单来说就是清根,出白,
清根是为了保证cjp,出白是为了除掉剩碳,也就是打磨到金属
白色,不是刨完以后的青色。
对于具体深度就要看当时坡口了,不管多少以清根为原则,所以
有时候你会发现有刨穿的现象。
它的宽度一般都是一次碳刨的宽度,取决于你使用的是什么碳棒 |
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