针对原等离子切割机存在的起弧困难和小弧到大弧的转移不连续的缺点,对原控制装置硬件结构和控制线路进行技术改造,使用结果表明:该装置运行可靠,起弧容易,控制效果好,并且提高了生产效率。
The author discusses the faults of the existing plasma cutting machine, difficulty to start arc and to transit from minarc to maxarc, then puts forward a new control scheme based on technical desires.
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