装有石墨栅极的大功率发射管,在排气过程中,经老炼和高电压打毛刺以后,从石墨栅极上蒸散出大量的碳黑,使电设间的绝缘电阻明显降低,甚至短路,管子报废。为了弄清楚石墨栅极碳黑蒸散这一重要向题.我们做了一系列的模拟试验,实地观察了碳黑蒸散现象,并分析了原因,采取了相应的措施,比较满意地解决了这一向题。 High-power launch tube equipped with a graphite grid electrode emits a large amount of carbon black from the graphite grid electrode during the process of exhausting, and after aging and high-voltage burr, the insulation resistance between the electric grids is significantly reduced. Short circuit, tube scrapped. In order to understand the important issue of graphite grid carbon black evapotranspiration, we did a series of simulation experiments to observe the phenomenon of carbon black evapotranspiration on the spot, and analyzed the reasons and adopted the corresponding measures, and solved the problem more satisfactorily question.