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A new method for manufacturing angle steel rolling pass

A manufacturing method and technology of pass type, applied in the direction of metal rolling, metal rolling, rolls, etc., can solve the problems of low roll reload rate, low roll utilization rate, large grooving depth, etc.

Active Publication Date: 2022-04-05
XINJIANG BAYI IRON & STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the utilization rate of the roll is low. Whether it is a box-shaped hole or a butterfly hole, the depth of the groove is relatively large, which makes the heavy-duty rate of the roll very low.

Method used

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  • A new method for manufacturing angle steel rolling pass
  • A new method for manufacturing angle steel rolling pass
  • A new method for manufacturing angle steel rolling pass

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Experimental program
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Embodiment Construction

[0021] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 Shown, a kind of novel angle steel rolling pass production method, the specific operation steps of described angle steel rolling pass production method:

[0022] a) First, design the pass shape of the finished product (K1) according to the specifications of the angle steel, and then according to the leg reduction and widening ratio of each pass of finishing rolling β The passes of each pass of the finishing mill are designed sequentially, which is limited by the number of flat rolling mills and roll diameters: the more butterfly holes, the deeper the cutting depth of the butterfly holes on the first stand, and the lower the roll strength , the number of butterfly holes in the finishing mill is 5;

[0023] b) The design method of the flat butterfly hole: the flat butterfly hole is from K2 to K6, by reducing the oblique line segment by track Lh The ...

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Abstract

The invention belongs to the technical field of steelmaking, and relates to a novel method for making a rolling pass for an angle steel; the method for making a pass for rolling an angle steel replaces a box-shaped hole with a grooveless rolling technology in the rolling deformation stage, There is no need to store special box-shaped hole rolls for angle steels of different specifications. The invention greatly reduces the reserve of rolls and reduces the production cost. The butterfly pass (flat butterfly hole) of the new angle steel finishing mill is much shallower than the traditional butterfly hole, which greatly improves the precision of the finishing mill rolls. Strength and service life.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and relates to a method for manufacturing a novel angle steel rolling pass. Background technique [0002] Unlike round steel, flat steel, rebar and other simple section steel, the rolling process of angle steel is more complicated, and the requirements for the size control of red bars are stricter. The usual angle steel rolling pass is composed of box hole + vertical rolling hole + butterfly hole. The advantage of such a combination of pass types is stable rolling. The box-shaped hole + vertical rolling hole can well control the shape of the material entering the butterfly hole, which ensures the stable rolling in the butterfly hole. The disadvantage is that the utilization rate of the roll is low. Whether it is a box hole or a butterfly hole, the depth of the groove is relatively large, so that the reload rate of the roll is very low. [0003] With the continuous maturity of grooveless r...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B27/02
CPCB21B27/02
Inventor 孔利明姜振峰李力
Owner XINJIANG BAYI IRON & STEEL