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焊接这门年青的科学,由于它在工业生产中的重要作用,随着科学和生产技术的日益发展,焊接也将迅猛向前。焊接的发展,意味着焊机数量的增加,消耗电能的增加。电焊机耗电之多是大家熟知的。所以省电就成为我们当前的一个课题。焊接发展的初期,只能采用直流弧焊机。这是因为当时的技术水平有限,使用直流电源才能保证电弧稳定燃烧,保证焊缝质量。现在就不同了,除特殊情况下要用直流电源外,大
Welding this young science, due to its important role in industrial production, with the continuous development of science and production technology, welding will also be moving forward rapidly. The development of welding, means that the increase in the number of welders, power consumption increases. The power of welding machine is well known to all. So saving has become our current issue. The initial development of welding, can only use DC arc welding machine. This is because at that time the limited technical level, the use of DC power to ensure stable combustion of the arc to ensure the quality of the weld. Now different, except under special circumstances to use DC power supply, large