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引用第8楼bob_dai于2010-12-16 00:05发表的 :
4 R9 C$ n2 a* X6 b" v& c; @the softening temperature of the material is determined on a separate specimen, under the conditions3 `' o- Y; {, s
specified in ISO 306 with a heating rate of 50 °C/h and modified as follows:2 L4 i1 a2 X/ Z) T
– the depth of penetration is 0,1 mm;
% J0 w5 z7 p, ]6 D3 U– the total thrust of 10 N is applied before the dial gauge is set to zero or its initial reading noted.) w; |; g, U8 Z) O2 @7 g7 g
4 s/ j, e- R7 d# H# m I
....... J" c+ x8 l! p- P6 W2 @9 _) v& `
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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