F-shaped steel mill roll double-hole type and rolling method

Abstract

The invention discloses an F-shaped steel mill roll double-hole type and a rolling method. The double-hole type is formed by splicing an upper roll and a lower roll of a rolling mill and is a pair of F-shaped steel hole types which is symmetric along an axial line AA and are communicated through a connecting area. The axial line AA is perpendicular to the horizontal central ling BB of the double-hole type; and the connecting area is used for connecting one side, corresponding to the free end of a wing plate of the rolled F-shaped steel, of each F-shaped steel hole type. According to the rolling method, rolling is performed through a production line consisting of a reversible roughing mill and a universal rolling mill group; and each universal rolling mill of the universal rolling mill group is provided with the mill roll of the F-shaped steel mill roll double-hole type. The F-shaped steel mill roll double-hole type is used for rolling, so the rolling speed, namely the yield of steel per hour can be increased, the production cost can be reduced, the rolling stability can be improved, and the yield of finished products can be increased.

Description

technical field [0001] The invention relates to the field of special-shaped steel rolling, in particular to an F-shaped steel roll double pass and rolling method, which is a new pass development and rolling method, which improves the hourly steel output and rolling stability of special-shaped steel, reduces Cost of production. Background technique [0002] F-shaped steel is a kind of special-shaped steel, which can be used for maglev train tracks. In recent years, with the need for special low-cost, high-capacity transportation between urban core areas and inter-city areas, medium and low-speed maglev train projects are being gradually promoted and developed at a relatively fast speed, such as the special line for Kunming World Expo Park (2 kilometers); Beijing Badaling tourism special line (80 kilometers); Guangzhou-Foshan (70 kilometers); Guangzhou-Dongguan (50 kilometers) have substantive plans; more than 60 other cities have related intention plans; Tangshan Vehicle Fac...

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Problems solved by technology

The production line includes a reversible billet mill and a universal continuous rolling mill (arrangement sequence is UR, E, UF). The roll pass of the universal continuous rolling mill for producing F-shaped steel is a single F pass. The hourly steel output of F-shaped steel is low, and A single F pass leads to poor rolling stability and a low yield of only 70%, which cannot meet the large demand of the market. Therefore, it is necessary to improve the production line to increase the hourly steel output, improve rolling stability, and increase the yield

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