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模具电热管使用

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报价:面议

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电热管-模具加热棒-电加热器

电热管-模具加热棒-电加热器

模具用单头电热管本身为高瓦特密度,经常因为热传递太差,造成外部管体焦黑,内部高温加速电热线老化,导致电热线断裂;模具深孔加工应注意孔径和长度的精准度,不可两头钻孔,因为交接处无法密合而有较大孔隙,使电热管散热不良,被加热体温度不平均;电热管安装时应把加热区域全部放入模具孔里,并加以固定,保护发热区不外漏空烧;避免使用耐温低的热传导泥,以免造成内孔积碳、漏电,日后不易更换电热管

One of the reasons cartridge heaters usually have higher watt densities than other heaters is that their installation usually is in such a way that the heat is usually removed quickly from the surface of the heater.  If your cartridge heater is extending out of the hole, you only have the surrounding air to remove the heat being generated by the heater.  Of course, metal is a much better conductor of heat than air.

This can cause an early death for a cartridge heater.  If you have to have a portion of your heater extending past the edge of the mounting hole, make sure you specify an unheated area at the end when ordering.


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