一、ф140自动式轧管机组工艺改进综述我厂的ф140自动式轧管机组是1963年建成投产的,到1958年产量就翻了一番半,以后十几年,基本稳定在翻一番水平上,质量逐年提高,品种规格不断扩大,金属消耗在逐渐降低。主要采取的措施有: 1.工艺改革方面①建立了冷拔车间,对小直径薄壁管全部改为冷拔生产; ②扩大了品种,加大了规格,对150～168毫米的无缝管大量生产; First, ф140 automatic rolling mill process improvement Overview ф140 automatic mill rolling plant in our plant was put into operation in 1963, by 1958 the output doubled over half of the next ten years, basically stable at double the level On the quality improvement year by year, continue to expand the variety specifications, metal consumption is gradually reduced. The main measures taken are as follows: 1. Process reform ① established a cold drawing workshop, all of the small diameter thin-walled tube to cold drawing production; ② expanded varieties, increased specifications for 150 to 168 mm seamless tube Mass production