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引用第8楼bob_dai于2010-12-16 00:05发表的 :" t# a) F+ [" h8 m2 C: T6 ]2 F7 P0 r
the softening temperature of the material is determined on a separate specimen, under the conditions
: V6 R% N N$ q0 S1 ?. ispecified in ISO 306 with a heating rate of 50 °C/h and modified as follows:7 m; x! m$ J8 T }3 F" X# B
– the depth of penetration is 0,1 mm;
* J% g7 k' F+ J$ Q– the total thrust of 10 N is applied before the dial gauge is set to zero or its initial reading noted.% O& ~* E9 `/ t1 X
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....... 2 B0 W7 z, E; }
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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