易地改造后的Ф100 mm自动轧管机组

我国1960年设计的第1套Ф100mm自动轧管机组历经40余年的生产,其间在原地虽经几次技术改造,但技术装备仍较落后,产品质量不能满足市场的需求。介绍了江阴市无缝钢管总厂对该机组实施的易地技术改造,在此次改造中采用了环形炉加热管坯、热定心、中频感应加热、微张力定(减)径等先进的生产工艺,由此使机组的产品规格范围扩大,产品质量明显提高,市场竞争能力大大增强。

Modification of Relocated Ф100mm Plug Pipe Mill

Set up in 1960 and located at the Jiangyin Municipal Seamless Steel Tube General Plant, the first China-made §?100 mm plug pipe mill had been used for more than four decades. Although it had been since modified for several times at its original site, it was still rather backward in terms of technological configuration, and failed to produce quality tubes as required by the market. The paper focuses on the major technical upgrade of the said plug mill line performed after it is relocated, covering such advanced technological processes as heating billet with the rotary hearth furnace, billet hot-centering, mid-frequency induction furnace reheating and slight stretch sizing(reducing), etc. As a result, the mill??s product size range is expanded, product quality improved considerably and the competitiveness enhanced.