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为提高铸件质量,节约原材料,北京机械研究所和北京第二机床厂、北京第三通用机械厂组成了攻关组,在北京市机械局党委的领导下,设计、制造了3吨、5吨短线圈工频无芯保温前炉。它是一种感应器线圈高度较矮、与冲天炉串联使用、以少量电能保温或升温大量铁水的炉子。其感应器的高度只有一般工频炉的四分之一左右,使用的功率只有一般工频炉的十分之一。目前,北京第二机床厂5吨保温前炉已投产使用半年多,取得了良好效果。一、5吨工频无芯短线圈保温前炉结构
In order to improve the quality of castings and save raw materials, Beijing Institute of Machinery and Beijing No.2 Machine Tool Plant and Beijing No.3 General Machinery Factory formed the research group. Under the leadership of Party Committee of Beijing Municipal Bureau of Machinery, 3 tons and 5 tons of short-term Ring frequency coreless insulation forehearth. It is a sensor coil height is short, in series with the cupola, with a small amount of energy to heat or heat a large number of hot metal stove. The sensor height is only about a quarter of the general power frequency furnace, the use of power is only one-tenth of the general power frequency furnace. Currently, the second Beijing Machine Tool Plant 5 tons of insulation before the furnace has been put into operation more than six months, and achieved good results. A, 5 tons frequency coreless short coil insulation front furnace structure