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各位同学，
8 w$ m o) ~0 i qUL1598,第16章垫片加速老化测试，评估垫片的张力和伸长率，各位是用多大的力去拉的？
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- H2 N T. X- x1 {16.5.9 Gasket accelerated aging (Method A)
# b; i+ V1 I: V) x# R16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.+ x- ]4 ?1 V0 e& [2 m' _+ Q$ F3 h
16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and
" c4 b( x: t% o# v, G1 lelongation, and the average values calculated.
7 Z# n, }6 P% p0 b7 Y16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a
7 z* r9 {" l7 H, p4 h& e. |: R3 u4 Jtemperature 20 °C above the maximum gasket or bushing temperature as determined by the normal, ]% a5 R/ J( x4 r0 Z- f
temperature test of Clause 14.
$ Y* V) d0 O' ]9 j2 w2 X16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60' L- z" Y% B, t" t4 l% |! P) r+ V
percent and an average elongation of not less than 75 percent of the values determined before; }& I; ?* C; g' Z- _9 G
conditioning." N# C0 I* _4 u* G2 l# L) h
U! l! W1 X9 f I' }8 I
谢谢！
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发表于 2013-11-1 15:48
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