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上钢五厂十二车间丙班QC小组运用数理统计,合理控制轧钢切头量,既保证钢材质量,又提高成材率,在企业管理科学化道路上,前进一步。该车间以方坯为原料,轧制φ55～φ130mm各种合金钢材。过去一抓成材率就减少切头量,一抓质量又增加切头量,对于合理的切头量心中无数。丙班QC小组经过调查研究,认为在正常情况下,钢坯经过轧制成形后,头部和尾部的形状和缺陷长度应符合正态分布规律。他们对φ60至φ120mm的圆
On the other hand, QC team of No.2 Workshop C of Shanghai Iron and Steel Plant applied mathematical statistics to rationally control the amount of rolled steel, which not only ensured the quality of steel but also improved the finished product ratio. It was one step forward in the scientific management of enterprise management. The workshop to billet as raw material, rolling φ55 ~ φ130mm various alloy steel. In the past a success rate to reduce the amount of cut head, a grasp of quality and increase the amount of head, for a reasonable amount of heart cut countless. C class QC group after investigation and study, that under normal circumstances, the billet after rolling forming, head and tail shape and defect length should be consistent with the normal distribution. They are round for φ60 to φ120mm