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各位同学，
0 D6 p6 W1 U- \+ f' D8 dUL1598,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？) n3 r7 J% A+ y# X7 A
* n8 R* ?$ ]! c9 y
16.5.9 Gasket accelerated aging (Method A)
' ?9 X# i4 I4 }8 X9 A16.5.9.1 A gasket or bushing shall be subjected to the gasket accelerated aging test.
6 o& O4 [5 y1 M9 n" n' S16.5.9.2 Three specimens of the gasket or bushing material shall be evaluated for tensile strength and
. k, D- A* \. }+ _7 P7 relongation, and the average values calculated.* B# t+ _( ?5 A1 x' g; A8 t+ w7 \# U
16.5.9.3 Three additional specimens shall be conditioned for 168 h in a circulating air oven at a$ ^: n; S3 R; {1 s" }2 A
temperature 20 °C above the maximum gasket or bushing temperature as determined by the normal" E2 E: g5 Z' C" K7 O; U0 t# e
temperature test of Clause 14.9 A* h% \# z. J- e; B X- Z* D
16.5.9.4 After conditioning, the 3 specimens shall have an average tensile strength of not less than 60
' O( s! Q" K8 r2 `6 u; wpercent and an average elongation of not less than 75 percent of the values determined before
- o* N2 T( X( lconditioning.1 L3 B' T2 j- h; Y
2 t1 m* c c$ Q8 z* i3 Z/ k谢谢！
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发表于 2013-11-1 15:48
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