按群力机械厂现有的设备条件,加工轧钢机大型铸件是有很大困难的。比如加工轧钢机上的牌坊内侧表面时就需要大型龙门刨床或大型插床,但是这两种机床该厂都没有。在任务繁重时间紧迫的情况下,经过张广昌和战聚生师付的苦心钻 According to Qunli Machinery Factory existing equipment conditions, processing large-scale rolling mill is a great difficulty. For example, when machining the inner surface of the archway on a rolling mill, a large gantry planer or a large gantry is required, but neither of these machines is available at the plant. In the case of heavy time and urgent task, after Zhang Guangchang and Ju Junshi painstakingly paid