一、概述一九七二年,随着我厂铣床产量的大幅度增长,铸工车间冲天炉每天要担负着100吨左右(最高达130吨)的熔化量。这样,冲天炉上一直存在着日益增长的熔化量的要求和设备熔化能力不足之间的矛盾。在这种情况下,只好每天把仅有的两座7.5吨冲天炉同时开,不仅人 I. Overview In 1972, with the substantial increase in the output of milling machines in our factory, the cupola in the foundry workshop is responsible for the melting amount of about 100 tons (up to 130 tons) every day. In this way, there has always been a contradiction between the demand for a melting capacity in the cupola and the insufficient melting capacity of the apparatus. In this case, the only two 7.5-ton cupola to open at the same time, not only people