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各位同学,
, I" {4 ^) z) y' G; ?$ k: { S& SUL1598,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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16.5.9 Gasket accelerated aging (Method A)1 I& T: w7 I5 N
16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.1 u$ y1 V8 ^1 T3 m# Q
16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and0 u% z) q% W$ A+ j
elongation, and the average values calculated.
. ^5 c# S( y5 a6 o* f P16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a
# J6 @! c% B- M+ _% M" x+ z5 u/ ]( Wtemperature 20 °C above the maximum gasket or bushing temperature as determined by the normal1 [$ A7 l& ^$ J" e: v X) D! h
temperature test of Clause 14.7 H, L1 `* w( D- P5 e
16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60: a7 w6 G% x# W, a1 {
percent and an average elongation of not less than 75 percent of the values determined before
6 S% [9 \" r* J" \5 e/ W+ tconditioning./ q; q& b7 A9 Q- G
! V! A5 m Z1 r# p谢谢!( G+ p$ G! V4 ], ~
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