摘要
本文论述了微机控制CO_2焊熔滴短路过渡过程电流波形的试验系统。该系统实现了在短路电流波形任意点上迭加一负脉冲电流波形。焊接工艺试验结果表明,在此负脉冲电流波形的微机控制参数t0、△t及△I合适时能使焊接飞溅大幅度减少,因而本系统有着实用前景。本文主要介绍了微机系统的电路设计、控制程序设计、负脉冲电流发生器电路参数与控制程序参数,对负脉冲电流波形与幅值的影响等方面的具体情况。
A microcomputer experimental system has been made for the control of current wave form during the short circuiting metal t(?)ansfer of CO_2 welding process. This system can produce a negative pulse of current at any moment of the short circuit transfer. The result of welding tests shows that this system can reduce the welding spatter effectively when the program parameters t_0、△t and △I are properly chosen. The system has many practical p(?)ospects in welding production applications. This paper mainly introduces the electrical circuits and the cont(?)ol prog(?)am of the system as well as the effect of the parameters of the circuits and the program on the wave form and the amplitude of the negative current pulse.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
1989年第2期126-132,共7页
Transactions of The China Welding Institution
