Method of preparing channel steel by local heating and stepwise roll pressing

A technology of local heating and channel steel, which is applied in the field of rolling and forming of steel materials, can solve the problems of large stress concentration of channel steel, large degree of plastic deformation of materials, difficulty in obtaining dovetail groove edges, etc., and achieves high production efficiency and low production cost , Dimensional accuracy is easy to guarantee the effect

Inactive Publication Date: 2017-11-28
TIANJIN LEYING TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0002] The processing process of cold rolling or cold bending process does not require heating, but the degree of plastic deformation of the material is large, the stress concentration of the channel steel is large, and it is difficult to obtain the dovetail groove edge

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0006] In order to further illustrate the present invention, the present invention will be further described in detail below in conjunction with preferred embodiments.

[0007] A channel steel for the bottom of hollow glass, the size of the rollers in the equipment and the gap between the rollers are adjusted according to the size of the special channel steel.

[0008] In order to ensure the automatic operation of the channel steel manufacturing process, the strip steel is limited by a pair of side lying rollers when feeding. The strip 2 is leveled by two pairs of leveling rollers after passing through the side-lying roller limit rollers. After the strip is leveled, it passes through a pair of rollers (for micro-pressing. When micro-pressing, the upper roller is the driving wheel, and the lower roller is the driven wheel; there are small acute angles on both sides of the upper roller surface, so that the upper roller A small acute-angle slope is formed at the outer edge of th...

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Abstract

The invention relates to a channel steel forming method, which belongs to the technical field of rolling, processing and forming of iron and steel materials. The forming process of channel steel is as follows: strip steel feeding → leveling → micro pressure → local heating → dovetail edge forming → cooling → step-by-step cold bending forming → straightening → blanking. The channel steel is prepared by local heating and multi-channel step-by-step roll forming. The dimensional accuracy of the prepared professional channel steel is easy to ensure, and the appearance is free of burrs. The production efficiency of channel steel produced by the method of the invention is high, the process is simple, and the obtained special channel steel has strong bearing capacity, long service life and low production cost.

Description

technical field [0001] The invention relates to a channel steel forming method, which belongs to the technical field of rolling, processing and forming of iron and steel materials. Background technique [0002] The processing process of cold rolling or cold bending process does not require heating, but the degree of plastic deformation of the material is large, the stress concentration of the channel steel is large, and it is difficult to obtain the dovetail groove edge. Therefore, it is very meaningful to research and develop the forming process of channel steel with dovetail groove edge without hot rolling, uniform plastic deformation and low cost in the forming process. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for preparing channel steel with dovetail groove edges by adopting partial heating and step-by-step roll forming. [0004] The technical solution of the present i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/08B21D21/00B21B1/095
CPCB21D5/08B21B1/095B21D21/00
Inventor 王洪乐
Owner TIANJIN LEYING TECH CO LTD
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