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J-shape cold bend steel steel and rolling technology

A cold-formed steel, J-shaped technology, used in metal rolling, slender components, building components, etc., can solve the problem of difficult to ensure technical requirements and product quality, reduce the difference in rolling, easy to straighten , the different effects of reducing the degree of work hardening

Inactive Publication Date: 2007-11-07
上海佳冷冷弯科技股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, there is no mature rolling process for the above-mentioned section steel products with such special requirements, especially to produce J-shaped cold-formed steel with a small cross-section and a large ratio of thickness to curvature radius, it is difficult to guarantee technical requirements and product quality

Method used

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  • J-shape cold bend steel steel and rolling technology
  • J-shape cold bend steel steel and rolling technology
  • J-shape cold bend steel steel and rolling technology

Examples

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Embodiment Construction

[0025] Below is an embodiment of the present invention, the present invention is further described in conjunction with the structure of accompanying drawing 1 and the rolling process diagram of accompanying drawing 2 to accompanying drawing 5: present embodiment is a kind of J-shaped steel, and the structural size of steel is The thickness δ is 6mm, the arc radius R is 7.5mm, the long side CB is 32mm, the short side DB is 2mm, the overall height AB of the section steel is 45.5mm, and the specification is 68*6, the grade is 1cr17 stainless slitting steel strip for processing production. The specific rolling process is as follows:

[0026] (1) The first rolling stand K1 is the upper and lower flat rolls and the guide vertical roll K 1L With the control of raw materials, there is no deformation at this time, including the guide vertical roller K in the next few steps 1L 、K 2L 、K 3L 、K 4L 、K 5L 、K 6L It is all to control the product to enter the next roll smoothly, and at t...

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Abstract

The invention relates to a J shape cooled steel structure and the rolling process. The structure has the asymmetry length and the ration of the thickness and inner arc radius can reach above 80%. The technology scheme is to roll the steel by the roller continuously until the steel changing the shape, the rolling distortion process is divided into 12 times. It uses the up / down binate plain-barrel roll, the matched leading vertical roller, the three rollers frame and two straightening machines to make straight. The short lift angle is bigger than the long side in rolling process. The arc center departures the rolling line from big to 0. the steel of the invention has the asymmetry arc lengths which is above 16 times and reach to the difference +-0.1 to assure the quality.

Description

Technical field: [0001] The invention relates to a section steel technology, in particular to the structure and rolling process of a special-shaped cold-formed section steel product. Background technique [0002] Cold-formed steel is widely used in steel structural parts and various special purposes because of its light weight and good rigidity. There are more and more cross-sectional shapes, and some are even complex, but its forming process is basically far from There are two kinds of bending without stamping forming and roll forming of roll forming. Now most of them use the roll forming process, which is based on the cross-sectional shape and size of the product, designing the deformation process, calculating the width of the material, and designing the forming roll. passes. The cross-sectional shape of the product determines the width of the expanded material, and the deformation process and method determine the forming roll passes. In the deformation process, the conv...

Claims

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Application Information

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IPC IPC(8): F16S3/00B21B1/08
Inventor 张静姜春民
Owner 上海佳冷冷弯科技股份有限公司
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