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今年元月,我们采用苏联先进经验斜轧法设计18号工字钢,经试轧后,结果很好,试轧一次即成功,外形全部合符标准。现将设计情况介绍于后,以供孔型设计工作者参考。轧辊直径为800(二辊式),由于设备的关系,采用9个变形孔,其中两个切深孔。各机架上的配置道次是:第1架开坯辊,配置1个切深孔;第2架预轧辊,配置1个切深孔,4个变形孔;第3架精轧辊,配置3个变形孔。设计时,除切深孔外,所有变形孔腰与腿的延伸系数都取得近乎相等,但仍保持了腿部平均延伸系数大于腰部延伸系数约2—5%的关
In January of this year, we adopted the advanced experience of the Soviet Union to design the No. 18 I-beam. After the test-rolling, the result was very good. The test was successful once and the shape all met the standards. Now the design situation introduced later, for the hole design workers for reference. Roll diameter 800 (two-roll), due to the relationship between the equipment, the use of 9 deformation holes, of which two cut deep hole. Arranged in each rack on the road are: the first billet roll, with a cut deep hole; the second pre-roll, with one cut deep hole, four deforming hole; the third finishing roll, the configuration 3 A deformation hole. Design, in addition to cut deep hole, all deformation hole waist and leg extension coefficient are made nearly equal, but still maintain the average extension coefficient of the leg is greater than the waist extension coefficient of about 2-5% off