電線加熱變形試驗(yàn)機(jī)用來(lái)測(cè)試塑料及電線皮等材料的熱變形程度。特定溫度下，將試件于試驗(yàn)機(jī)內(nèi)自由置放30分鐘后，再夾在本機(jī)平行板間，加規(guī)定之荷重，同溫度再置放30分鐘，用量表量取其加熱前后之厚度差，該厚度差除以加熱前厚度，即為變形率。符合UL1581、GB2099標(biāo)準(zhǔn)試料本機(jī)一定溫度中，加熱 30 分鐘后，夾在本機(jī)平行板間，加規(guī)定之荷重，

于同溫下再經(jīng) 30 分鐘，然后以加熱前后之厚度差，除以加熱前厚度，以百分比為單位，即為變形率。

This machine is used for the heat deformation test of power cords。Put

 specimen into test chamber of this machine under a certain temperature

for 30 minutes，then clamp specimen between two parallel plates，the

upper plates being subject to a constant load under the same temperature

for 30 minutes。Afterwards，the differential thickness before / after

heating is divided by the thickness before heating and multiplied

by % for being unit，that is deformation。

符合UL1581、GB2099