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在第二次石油冲击到来之前,能源、资源的节约更加成为世界性的课题。无论什么样的焊机,弧焊机或是电阻焊机都要消耗很多电力是属于用电量大的电器设备,可说是“电老虎”,所以对于电焊机的节能问题必须认真研究。研究焊接节能时,主要应从耗电量(千瓦小时)和焊接电源容量(千伏安)两方面来考虑。各种焊接方法耗电量的差别是主要研究对象,电焊机的效率也很重要,电力变压器效率一般可达97～99％,电焊机的效率则是:电弧焊机为75～85％,电阻焊机大约只有15～20％。在日本,焊机的平均使用率是非常低的:按通产省统计数推算出的焊机保有台数和工作台数计算,自动焊机的平均使用率7％,交流电弧焊机5.7％;
Before the second oil shock came, energy and resource conservation became more global issues. No matter what kind of welding machine, arc welding machine or resistance welding machine consume a lot of power is a large amount of electrical equipment, can be described as “electric tiger”, so the welding machine energy saving issues must be carefully studied. Study of energy-saving welding, mainly from the power consumption (kWh) and welding power capacity (KVA) to consider two aspects. The main difference between the power consumption of various welding methods is the main object of study, the efficiency of welding is also very important, the power transformer efficiency is generally up to 97 ~ 99%, the efficiency of welding is: arc welding machine 75 ~ 85%, resistance Welder about only 15 to 20%. In Japan, the average utilization rate of welding machines is very low: According to statistics of MITI calculated by the number of welding machines and work tables, the average utilization rate of automatic welding machines is 7% and that of AC arc welding machines is 5.7%.