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热处理是用能大户素有电老虎之称。据统计目前全国95％以上的热处理炉是电加热、其电耗为全国发电量的8～10％。到本世纪末需热处理件将达5.6亿吨,是70年代的9倍,其用电量是可想而知的。在机械工业近20余万台电加热炉中,其总功率可达2000万kw,电耗为200亿度,其设备利用率仅有25％。在全国近2000台感应加热设备中,多数工厂的利用率仅有10～30％,与先进国家60～70％的利用率相差悬殊,即失去该设备的节能作用。而在全国总功率为50万kw的盐溶炉中,其平均热效率为16.4％,电耗平
Heat treatment is to use powerhouses known as electric tiger. According to statistics, over 95% of the nation’s heat treatment furnaces are electrically heated, and their power consumption is 8 to 10% of that of the whole country. By the end of the century, heat treatment parts will reach 560 million tons, which is nine times that of the 1970s. The electricity consumption is predictable. In the machinery industry nearly 20 million electric heating furnace, the total power of up to 20 million kw, power consumption of 200 billion degrees, the utilization rate of only 25% of its equipment. Among the nearly 2,000 induction heating equipment in China, the utilization rate of most plants is only 10 to 30%, which is different from the utilization rate of 60 to 70% in advanced countries, that is, the energy-saving effect of the equipment is lost. In the country with a total power of 500,000 kw salt furnace, the average thermal efficiency of 16.4%, power consumption level