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用旋转电极法制取高纯合金粉末是一项新的工艺。在国外只有少数几个国家进行试验和作小量生产,并作为专利予以报道;在国内尚为首次进行这项研究。本文根据“旋转电极制粉炉”的工艺特点,通过对大电流电弧物理特性的讨论,提出了用电的方式对该设备的自耗电极电弧进行检测及控制的方案,并比较详细地介绍用光电耦合器件电路对电弧进行检测,以及采用的其他一些针对性测量技术措施。经过对控制装置电路的设计安装和实验室调试,表明装置的性能能够满足旋转电极制粉法的工艺要求,为设备现场调试提供了基础。
Preparation of high purity alloy powder by rotating electrode method is a new process. Only a few countries abroad have experimented and made small-scale productions and reported them as patents; this is the first time that this study has been conducted in China. According to the technological characteristics of “rotating electrode pulverizing furnace”, this paper puts forward the scheme of detecting and controlling consumable electrode arc by means of electricity through the discussion of physical characteristics of high current arc, and introduces in more detail The use of optocoupler circuit for arc detection, as well as the use of some other targeted measurement techniques. After the control device circuit design and installation and laboratory commissioning, indicating that the performance of the device can meet the rotary electrode milling method of the technical requirements for commissioning of the equipment provided the basis.