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发表于 2008-10-5 21:04:32
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来自: 中国天津
根据15614-1:2004 ISO$ [ `$ V5 p. a* ]0 s
N! s( e# p' n a8 c" ~' S6 P$ D8.4.8 Heat Input
% a/ `3 y; `+ M# ~6 Z' ?; FWhen impact requirements apply, the upper limit of heat input qualified is 25 % greater than that used in welding n2 u- h6 e/ }/ d3 q$ X
the test piece.9 f0 Y; i0 H4 Q# K/ i
When hardness requirements apply, the lower limit of heat input qualified is 25 % lower than that used in welding
& ], X( L8 J s" W/ r' Tthe test piece.4 [) R* u. w9 y/ V- v: @
Heat input is calculated in accordance with EN 1011-1.1 h3 Q- ~& @' H2 F/ i9 b+ E2 \$ a3 e! U
If welding procedure tests have been performed at both a high and a low heat input level, then all intermediate heat0 |" m5 b6 o6 T0 I+ o; a
inputs are also qualified.
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% z6 I \% E6 b, F b& S0 }/ e8.4.8 热输入$ a# s2 q" G' |5 T/ C9 w3 U
有冲击试验要求时,认可的热输入上限可比试件焊接使用的热输入大25%。7 q0 d& c1 Q( y- J- ]
有硬度试验要求时,认可的热输入下限可比试件焊接使用的热输入小25%。
- d1 W0 U! U& A9 J# a+ r热输入的计算按照EN 1011-1。
! N& U: X6 J% {$ U/ F$ P9 W- X如果焊接工艺评定试验用高、低两个热输入进行,则其中间的所有热输入也适用。$ b6 x( q% K% z$ Q# ?/ z
& B! x1 e5 q+ X, e9 _6 o. a9 J- f[ 本帖最后由 bigwind 于 2008-10-5 21:07 编辑 ] |
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