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电加热的优点:加热时間短,比火焰爐加热要快15～20倍;氧化皮少,因而可减少金屬損耗4～5％,并保証鍛件表面光滑及質量,提高鍛模寿命2～3倍;提高劳动生产率40～50％;沒有烟灰,大大改善了鍛工車間的劳动条件;并可节省車間面积。总之,采用电加热,为进一步提高設备生产率及自动化生产提供了条件。在莫斯科小型汽車厂內,全部采用感应加热,使鍛件成本降低18％,金屬消耗减少14％,劳动生产率提高30～40％。在苏联第一軸承厂內,由于采用了感应加热,使生产率提高4倍,使金屬消耗减少2/3。电加热的种类可分:箱式电阻爐加热、接触电加热、各种頻率的感应加热及电解液中加热等。由于箱式电阻爐中加热生产率不高,一般并不推荐,除此以外,分别
The advantages of electric heating: heating time is shorter, faster heating than the flame furnace 15 to 20 times; less scale, which can reduce the metal loss of 4 to 5%, and ensure the forging surface smooth and quality, improve die life 2 to 3 Times; improve labor productivity 40 ~ 50%; no soot, greatly improving the working conditions of the forging workshop; and can save the workshop area. In short, the use of electric heating, to further improve equipment productivity and automated production provided the conditions. In the Moscow small car plant, all induction heating is used to reduce forgings costs by 18%, metal consumption by 14% and labor productivity by 30-40%. In the first Soviet bearing factory, due to the use of induction heating, the productivity increase of 4 times, so that the metal consumption reduced by 2/3. The type of electric heating can be divided into: box resistance furnace heating, contact electric heating, induction heating of various frequencies and heating in the electrolyte. As the box-type resistance furnace heating productivity is not high, generally not recommended, in addition, respectively,