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Process for rolling H steel using trio mill and heat rectification machine

A three-roll mill and process technology, applied in metal rolling and other directions, can solve problems such as web eccentricity and web corrugation, and achieve the effects of avoiding web eccentricity, improving rolling rhythm, and high equipment utilization.

Inactive Publication Date: 2004-06-16
李宝安
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned difficulties, simplify the production equipment and technology of H-shaped steel, avoid the occurrence of defects such as web eccentricity and web corrugation that may occur in the production of H-shaped steel with a universal rolling mill, and reduce the threshold for small and medium-sized iron and steel enterprises to produce H-shaped steel, the present invention provides A process for rolling H-shaped steel with an ordinary three-roll mill (or two-roll mill) and a universal hot straightening machine

Method used

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  • Process for rolling H steel using trio mill and heat rectification machine
  • Process for rolling H steel using trio mill and heat rectification machine
  • Process for rolling H steel using trio mill and heat rectification machine

Examples

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Effect test

Embodiment 1

[0024] Embodiment 1. H150X75 (belonging to narrow-side H-shaped steel) is produced on a Φ5502+Φ5001 three-roller tandem rolling mill. The rolling mill has three stands, and the length of the roll body is 1500mm. Four passes can be configured on each roll. The process scheme is described below.

[0025] The steel billet adopted is a square billet of 150×150, with three deep-cut holes and four extension holes, all of which adopt the parallel flange of the present invention

[0026] Embodiment 1. H150X75 (belonging to narrow-side H-shaped steel) is produced on a Φ5502+Φ5001 three-roller tandem rolling mill. The rolling mill has three stands, and the length of the roll body is 1500mm. Four passes can be configured on each roll. The process scheme is described below.

[0027] The steel billet used is a 150X150 square billet, with three deep-cut holes and four extended holes, all of which adopt the oblique rolling pass of the present invention for parallel flange bending, and inser...

Embodiment 2

[0032] H10010068 (belonging to wide-side H-beam) is produced on the Φ5502+Φ5001 three-roller tandem mill. There are three rolling mill stands, and the length of the roll body is 1500mm. Four passes can be configured on each roll. The process plan is:

[0033] The 150×150 square billet is used as the raw material, and after being heated, it is rolled on a common two-roll rolling mill (or three-roll rolling mill) through three passes of deep hole cutting, and then enters the extended hole consisting of five parallel flange passes. Then the leg height and the shape of the leg end are controlled and corrected through a rolling hole; then the rolled piece is rolled in the oblique rolling pass of the parallel flange bent leg, and the θ angle is greater than 90. H-shaped steel, and finally the bent legs are corrected by a universal hot straightening machine to obtain a finished H-shaped steel.

[0034] The universal hot straightening machine is composed of two vertical rollers conne...

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Abstract

The invention relates to a process for rolling I-section steel using the three-high or two-high mills, wherein after heating square bloom, rectangular bloom etc., knifing is performed on the three-high mill, then entering the extrusion hole type system and fine rolling hole system of the common three-high or two-high roller mill for rolling, and one or two rolling lateral openings are added between the elongation pass system and fine rolling hole system, both of the elongation pass system and fine rolling hole system comprises parallel wing rim inclined rolling hole moulds.

Description

Technical field [0001] The invention relates to a process for rolling H-shaped steel with a common three-roll mill (or two-roll mill), and belongs to the technical field of metal pressure processing. Background technique [0002] H-beam is also called parallel flange I-beam, and its cross-sectional shape is similar to the English letter "H", so it is called H-beam. H-shaped steel is a high-efficiency profile with more optimized cross-sectional area distribution and relatively large strength and weight. It has a large section coefficient, strong bending resistance, and saves metal. It is an economical section steel. [0003] The production of H-shaped steel requires a universal rolling mill, which has complex processes, large investment in equipment, and complex and huge equipment. The production of H-shaped steel by a universal rolling mill requires very high technical quality of personnel, difficult operation and maintenance, and web eccentricity and web corrugation defects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/08
Inventor 李宝安
Owner 李宝安
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