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LLJZ-4-1型连续拉拔机组是由上海冷拉型钢厂、上海冶金设计研究院、上海冶金机修总厂联合研制成功的。该机组把四台单机:冷拉机、矫直机、剪切机、抛光机集于一体,用来连续生产冷拔成品的棒材。其主要技术参数:最大拉拔力400公斤;最大拉制速度40米/分;剪切定尺长度2—6米;抛光机前进速度40～65米/分;拉拔成品规格φ5.5—φ12mm,也可拉拔相当断面的方、六角的型钢材料。该机组与旧式工艺相比较;成材率可提高2—3%;劳动生产率提高一倍,且大量减轻劳动强度;成本下降10～15%。每吨产品平均可增益133元以上,计划生产1500吨φ12mm 以下型钢材料可增加收益45万元,一
LLJZ-4-1 continuous drawing machine is a cold-drawn steel plant in Shanghai, Shanghai Metallurgical Design and Research Institute, Shanghai Metallurgical Machinery Plant jointly developed successfully. The unit to four single: cold drawing machine, straightening machine, shearing machine, polishing machine set in one, used to continuously produce the finished product of cold drawn bar. Its main technical parameters: the maximum drawing force of 400 kg; the maximum drawing speed of 40 m / min; cutting length length of 2-6 meters; polishing machine forward speed of 40 to 65 m / min; drawing finished specifications φ5.5- φ12mm, but also drawing a considerable section of the square, hexagonal steel material. The unit compared with the old process; finished product rate can be increased by 2-3%; doubled labor productivity and reduce labor intensity; cost down 10 to 15%. The average gain of more than 133 yuan per ton of products, plans to produce 1,500 tons φ12mm following steel materials can increase revenue 450,000 yuan, a