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鞍钢大型厂为提高槽钢断面尺寸的精确度,自1961年以来对各种型号槽钢孔型及轧制操作作了一系列的改进,现将取得的一些经验和成果介绍如下:一、槽钢孔型系统问题我厂用的槽钢孔型系统有两种,一种是带有控制槽钢轧件腿高孔型的工字钢式系统,如图1所示;另一种是热矫直孔型系统,其特点是轧件在最后一道次孔型里空过,仅将轧件弯曲的腰部及大倾斜度的腿部,矫直成槽钢最后所需外形尺寸,如图2所示。
Anshan Iron and Steel Large Plant to improve the accuracy of section size, since 1961 for various types of channel pass and rolling operations made a series of improvements, some of the experience and achievements are made as follows: First, the slot Steel hole system problems I used the channel system of steel channel there are two kinds, one is with the control of channel legs high hole type I-beam system, shown in Figure 1; the other is the heat Straightening hole system, which is characterized by the rolling pass in the last pass empty, only the bending of the rolling of the waist and large tilt leg, straightened into the final required dimensions of the channel, shown in Figure 2 As shown.