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冶金部于1983年10月下旬在上海召开“LLJZ—4T棒材连续拉拔机组”技术鉴定会。这台机组是上海冶金设计研究院和上海冷拉型钢厂共同设计、上海冶金机械总厂制造。来自冶金系统近百名代表参加了会议。 棒材连续拉拔机在国外目前拉拔速度已高达150米/分,拉拔卷材的最大直径已达到55毫米,而我国现在大多数棒材拉拔机还是使用热轧棒材坯料,一次只能拔一根或几根,速度低于30米/分,棒材直径小于25毫米,远远低于国际水平,迫切需要改变这种局面。 1981年10月上海冶金设计研究院、上海冷拉型钢厂和上海冶金机械总厂组成联合小组,参照某钢
Ministry of Metallurgical in late October 1983 held in Shanghai, “LLJZ-4T bar continuous drawing unit” technical appraisal. This unit is jointly designed by Shanghai Metallurgical Design and Research Institute and Shanghai Cold-drawn Steel Plant, and is manufactured by Shanghai Metallurgical Machinery Plant. Nearly 100 representatives from the metallurgical system attended the meeting. Bar continuous drawing machine in the current drawing speed has been as high as 150 m / min, drawing the maximum diameter of the coil has reached 55 mm, and most of our bar drawing machine is still using hot-rolled bar stock, once Only pull one or a few, the speed of less than 30 m / min, bar diameter less than 25 mm, far below the international level, an urgent need to change this situation. In October 1981, Shanghai Metallurgical Design and Research Institute, Shanghai Cold-drawn Steel Plant and Shanghai Metallurgical Machinery Factory formed a joint group, referring to a certain steel