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1984年洪都钢厂制定了无缝管生产总体技术改造方案,方案分三期实现:第一期是无缝钢管车间就地改造配套提高,形成3万t/a好的冷拔无缝钢管综合生产能力;第二期是引进新型轧管机、提高装备水平,为冷拔提供合理的半成品管,为今后热轧生产小口径成品管创造条件;第三期是在新型轧管机后配置定(减)径机,生产小口径热轧成品管。1984年以来,已进行了二期工程,第一期改造工程决策正确,设计合理,工期短,经济效果好,是全公司“六五”期间技术改造成功的一个典型,第二期引进三辊轧管机,自1988年投产试生产以来一直未能正常生产。本文对这二期技改工作进行初步分析。
1984 Hongdu Steel developed a seamless steel pipe production of the overall technical transformation program, the program is implemented in three phases: the first phase of seamless steel pipe workshop to improve the matching in situ, the formation of 30,000 t / a good cold drawn seamless steel pipe Comprehensive production capacity; the second phase is the introduction of new type of rolling mill to improve the level of equipment for the cold drawn to provide a reasonable semi-finished pipe for the future production of small-diameter hot-rolled finished product to create conditions; the third phase is the new configuration after the rolling mill Set (minus) diameter machine, the production of small-diameter hot-rolled finished pipe. Since 1984, the second phase of the project has been carried out. The first phase of the reconstruction project has been made with the right decisions, reasonable design, short construction period and good economic results. It is a typical example of the successful technological transformation during the “Sixth Five-Year Plan” Pipe mill, put into trial production since 1988 has been unable to normal production. This paper carries out a preliminary analysis of the two technical transformation work.