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引用第8楼bob_dai于2010-12-16 00:05发表的 :
Z0 d: Y, {7 a+ N$ t/ v8 uthe softening temperature of the material is determined on a separate specimen, under the conditions& m" c7 B, m% l+ Z/ t( f# j
specified in ISO 306 with a heating rate of 50 °C/h and modified as follows:* P l9 e! q( \. ^* L5 x
– the depth of penetration is 0,1 mm;
- E8 b ~9 ~; c, ~– the total thrust of 10 N is applied before the dial gauge is set to zero or its initial reading noted.7 ?8 {; @- j. f; s" L( p, l5 F4 F
6 G3 a( @# l2 L. ?; P* s
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# y+ ?% x& q; E4 W& y! X: i5 t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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