Pulsed plasma arc cladding

Jinglong Li, Gang Bai, Zhenmin Li, Fusheng Zhang, Siqian Yang

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

A prototype of Pulsed Plasma Arc Cladding system was developed, in which single power source supplies both transferred plasma arc (TPA) and non-transferred plasma arc (N-TPA). Both plasmas work in turn in a high frequency controlled by an IGBT connecting nozzle and workpiece. The working frequency of IGBT ranges from 50-7000 Hz, in which the plasmas can work in turn smoothly. Higher than 500 Hz of working frequency is suggested for promotion of cladding quality and protection of IGBT. Drag phenomenon of TPA intensifies as the frequency goes up, which tends to increase the current proportion of TPA and suppress N-TPA. The occupation ratio of IGBT can be regulated from 5%-95%, which balances the power supplies of both plasmas. An occupation ratio higher than 50% gives adequate proportion of arc current for N-TPA to preheat powder.

源语言英语
页(从-至)7-10
页数4
期刊China Welding (English Edition)
13
1
出版状态已出版 - 5月 2004

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