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谁做过IEC 60950-22 Equipment to be installed outdoors中的附录D Gasket tests?
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5 `' o% T# z9 Y, d6 n- y0 m其中的5 e1 d6 [, @7 ~3 y0 o5 O
D.2 Tensile strength and elongation tests( Y' ?( E' A. U' ~& G7 s
This test is applicable to gaskets, which can stretch (such as O-rings). Gasket material, shall
& c9 w/ }; s/ b% h9 g% wbe of such quality that samples subjected to a temperature of 69 °C to 70 °C in circulating air
% W# h& Z6 u( v& q! ] Y' R, Q4 Xfor 168 h have a tensile strength of not less than 75 % and an elongation of not less than. H9 h+ O* n; K. q, q# T. w6 y6 z
60 % of values determined for unaged samples. At the conclusion of the tests, there shall be" z" a, Y# Y+ C$ Z
no visible deterioration, deformation, melting, or cracking of the material and the material# K1 O( G9 @, X& Q8 p
shall not harden as determined by normal hand flexing.
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这里抗拉强度和伸长率怎么测定?试验方法如何?有参考标准吗?950-22这部分讲的太含糊了。 |
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