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各位同学，
/ |- D9 f$ `4 XUL1598,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？. Q3 e0 u% U' Z7 B5 U- f( K
+ b* \3 Y4 L" n* n; ^: i1 B6 V4 u! V' M16.5.9 Gasket accelerated aging (Method A)! S" C+ |$ u L, x* Q
16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
' A# E4 J( O ~16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and' a' W% b$ q- X% Y& p) r/ [7 X% C
elongation, and the average values calculated.
& E1 Q# J* U- y$ d: f16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a5 r/ x, [2 p( ?; q. k
temperature 20 °C above the maximum gasket or bushing temperature as determined by the normal! J+ \$ k2 Y5 @" v
temperature test of Clause 14.
9 |3 R& P( a7 g! h( ^, n* Q( S16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
3 F. J& T) c" P/ D* Cpercent and an average elongation of not less than 75 percent of the values determined before8 n$ b" M. J% e! G& k- p. k
conditioning., r$ t& x3 ?; }% V. i# W5 ^% ?& d
' h# o' o' U& q- ^( f2 g+ O6 U谢谢！
$ ~7 _6 N. ~5 d |
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发表于 2013-11-1 15:48
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