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各位同学，
6 ^0 o1 c" q* N+ q f, D MUL1598,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？) }: ?7 Q7 x* ?2 @8 A
0 p: B" p% {" S16.5.9 Gasket accelerated aging (Method A)
. j& h0 h6 Q& V16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
1 l5 z9 C2 y& V% Z( @, a+ @16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and
8 Z4 {! C$ n# q# a$ `- Oelongation, and the average values calculated.
# \2 d* g6 V1 s; `7 g9 ^16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a
7 g& d' |& C- ^. |3 [& \' Stemperature 20 °C above the maximum gasket or bushing temperature as determined by the normal$ \, \; `! K3 \/ ^4 E3 P, A
temperature test of Clause 14.
: H( b# e! s% p% ~16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
6 @& ]# n, Y* k# J3 Gpercent and an average elongation of not less than 75 percent of the values determined before# L" W9 S/ @; ^ y
conditioning.
- k$ k0 F( g& O+ Q. T: P+ Z) k5 e: _
谢谢！
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