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引用第8楼bob_dai于2010-12-16 00:05发表的 :8 b, H8 c% {7 W# F
the softening temperature of the material is determined on a separate specimen, under the conditions
, L) z* z; F& z) ~4 V9 Z6 J& M" E! mspecified in ISO 306 with a heating rate of 50 °C/h and modified as follows:
( r" T6 X( W" O2 E% ]– the depth of penetration is 0,1 mm;# i4 Z9 O$ t4 x, y5 `! P; M( c
– the total thrust of 10 N is applied before the dial gauge is set to zero or its initial reading noted.
: r' a$ B7 H3 F! H, T3 z$ d# D2 ]2 _+ z4 t
....... 7 p: T* E3 d- W( n: r! }4 k
补充八楼的说法,测试设备最好是可以实现自动控制功能的设备,例如在设定限值为0.1mm时,只要变形深度超过0.1mm,那么测试设备会自动停止加热,马上记录软化温度并显示出来。 |
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