Brazing quality and product reliability are both increased as using high frequency pulse microplasma archeating process for assembly brazing of cathode and photoetching grid of electron tube.
采用高频脉冲微束等离子弧做为电子管阴极和光刻栅极装配钎焊工艺的热源，提高了钎缝质量和产品的可靠性。
2
Another loading arithmetic based on the effective heating area of arc is designed, while its principle and automatic loading method are expatiated.
设计了基于电弧有效加热区域的加载算法，阐述了其原理及其自动加载的实现。
3
The results show that threeelectrode DC ladle furnace, increasing heating speed and without arc bias, can overcome the shortcomings of bottom-electrode DC ladle furnace.