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(一)前言:MG—200高速高温磨损试验机的加热炉(如图1),发热元件是由炉丝,但影响炉温的因素不仅仅是电压;因当被试验的材料在炉膛内做10m/s 线速度运行时,其试件本身发热量会超过炉丝的发热量,即使将炉丝电压调至零也无济于事,温度仍在上升,以致完全破坏试验条件,特别是在低温试验时,这种现象尤其严重,因此控制参数的选择,就不能仅限于电压单变量。而要引
(A) Preface: MG-200 high-speed high temperature wear testing machine heating furnace (Figure 1), the heating element is the furnace, but the factors affecting the furnace temperature is not only the voltage; because when the material being tested in the furnace to do 10m / s line speed operation, the specimen itself calorific value will exceed the heat of the wire, even if the furnace voltage is adjusted to zero is not helpful, the temperature is still rising, so completely undermined the test conditions, especially at low temperature test , This phenomenon is particularly serious, so the choice of control parameters, it can not be limited to the voltage single variable. And to quote