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在进行石墨材料的高温拉伸试验时,使电流通过试样,利用试样本身的电阻直接加热是一种简单易行的方法。这种方法可以得到较快的加热速度和较高的试验温度,可以省去造价昂贵的加热炉。为了使试验在真空下或保护气氛中进行,还可以在试样上罩上真空罩。因此,这种加热方法是高温快速加热试样的值得推荐的方法。1.试验装置采用通电加热时,试样本身作为发热体串接在加热电流的环路内,与粗大的电极软
In conducting high-temperature tensile testing of graphite materials, the current through the sample, the sample itself is the resistance of the direct heating is a simple and easy method. This method can be faster heating rate and higher test temperature, eliminating the need for expensive furnace. In order to test under vacuum or in a protective atmosphere, you can also cover the sample on the vacuum cover. Therefore, this method of heating is the recommended method for rapidly heating samples at high temperatures. 1. The test device adopts electric heating, the sample itself as a heating element connected in series with the heating current loop, and the coarse electrode soft