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本文报导了作者模拟实际电器中自然氧化及冲压加工的电极表面状况、以及在电弧轨道受控或不控的条件下研究电弧运动速度效应的结果。根据对铜、黄铜、铝、铁等电极采用两种布置方法的实验研究,发现电弧在自然氧化窄面电极棱边上首次运动极为困难,速度为每秒零点几到几米的数量级(横向磁场0.01特斯拉,电弧电流100安,电极距离2—8毫米),其中以铁为最困难,铝和黄铜次之,铜较易运动;当电弧在电极上作首次运动以后,接着使电弧第二次在相同轨道上运动,速度却增高十倍以上,达到每秒几十米数量级;对于相同条件下的宽面电极,由于各次电弧运动的轨道不同,在少数几次实验情况下,速度均为同一数量级,没有发现上述效应。文中对上述效应及磁驱动电弧的某些问题作了简要的讨论。
This paper reports the authors simulate the surface conditions of the electrodes naturally oxidized and stamped in an actual electrical appliance and the results of studying the effects of the velocity of the arc on a controlled or uncontrolled arc orbit. Based on the experimental study of two arrangements of copper, brass, aluminum, iron and other electrodes, it was found that it is very difficult for the arc to move for the first time on the edge of a naturally oxidized narrow electrode at the speed of a few tenths to several meters per second (transverse magnetic field 0.01 Tesla, arc current 100A, electrode distance 2-8 mm), of which iron is the most difficult, followed by aluminum and brass, copper easier to move; when the arc for the first time in the electrode movement, and then make the arc The second on the same orbital movement, the speed has increased tenfold or more, reaching the order of tens of meters per second; for the same conditions of the wide-face electrode, due to the different arc orbit, in a few experimental cases, Speed are the same order of magnitude, did not find the above effect. In this paper, the above-mentioned problems and some problems of magnetic-driven arc are briefly discussed.