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拉力芯棒斜轧延伸新工艺研究课题于1988年1月7日通过工业试验部级鉴定。与会专家评审意见如下: 1.该新工艺具有生产小口径、薄壁、高精度、内表面质量高的钢管的能力,壁厚偏差可到士5～8％,径壁比可到20,并可轧制长管。为提供合理的冷拨坯管,减少冷拨道次,提高冷拔车间效率、产品质量和成材率创造了条件。 2.经济效益显著,据常熟无缝钢管厂核算,减少一个冷拔道次,吨管可节约成本85元。如果一
Rally mandrel oblique rolling extension of the new technology research project in January 7, 1988 through the industrial test ministry appraisal. The experts reviewed the following observations: 1. The new process has the ability to produce small diameter, thin-walled, high precision, high quality steel inner surface, wall thickness deviation can be ± 5% to 8%, wall-to-wall ratio up to 20 Rolling long tube. In order to provide a reasonable cold blank tube, reduce the frequency of cold dial, improve the efficiency of cold-drawn shop, product quality and rate of success to create the conditions. 2. Significant economic benefits, according to Changshu Seamless Steel Tube Plant accounting, reducing a cold drawing pass, tons of pipe can save costs 85 yuan. If one