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各位同学，
& P* g- o( a# h. `+ IUL1598,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？
( L, d: E3 V# d% T9 y X: f/ g& V9 y9 ], `* t
16.5.9 Gasket accelerated aging (Method A)7 y% B- V/ }% \: ?% t4 }
16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
, q* Q3 Y9 i' K- ^7 ^- j16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and( `# C" E: j$ n2 J* U& s0 W% z) m
elongation, and the average values calculated.
. O" P% Z$ E# m/ v; y' i: G- _16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a
& {3 j( b& u( O [4 @3 Q$ ytemperature 20 °C above the maximum gasket or bushing temperature as determined by the normal3 T6 `4 J( ^. | K+ B
temperature test of Clause 14.
/ R0 {& S: \, v, p16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
& p; G5 _+ j! G6 Z7 Q+ Kpercent and an average elongation of not less than 75 percent of the values determined before
. \$ @, S8 L% Z3 ]( jconditioning.
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谢谢！
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发表于 2013-11-1 15:48
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