就阀门密封面等离子弧堆焊的技术关键问题：毛坯加工、工艺选择及质量控制等。
The key problems of technique for plasma hardfacing for sealing face of valve such as blank making. Process selecting and quality controlling.
本课题就是在钻基等离子弧堆焊过程中引入纵向直流磁场，利用磁场的作用提高堆焊层的性能。
This paper is about the effect of applied longitudinal magnetic field on Co-based plasma overlaying welding alloy.
粉末等离子弧堆焊技术作为表面强化技术手段之一，可显著提高零部件表面耐磨损耐腐蚀性能。
Powder plasma-arc surfacing, as one of the surface modification processes, is utilized widely to increase the wear and corrosion resistance on the surface of components.
本课题就是在铁基和镍基的等离子弧堆焊过程中引入纵向直流磁场，利用磁场的作用提高堆焊层的性能。
This paper is about the effect of introducing longitudinal magnetic field on plasma overlaying of Fe-based and Ni-based welding alloy.
用球面压缩喷嘴取代常规的锥形压缩喷嘴，这些是设计反极性弱等离子弧粉末堆焊枪的关键所在。
Substituting double electrode for normal tungsten and substituting spherical constricting nozzle for normal cone one are the key to design the torch.
用球面压缩喷嘴取代常规的锥形压缩喷嘴，这些是设计反极性弱等离子弧粉末堆焊枪的关键所在。
Substituting double electrode for normal tungsten and substituting spherical constricting nozzle for normal cone one are the key to design the torch.
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