A kind of steel web bending correction technology

Abstract

The invention discloses a process for correcting the bending of the profiled steel web. The existing profiled steel roller leveler is used for correction, and the curved arc of the web of the rolled piece is directed upwards, and the lower straightening rollers of the roller leveler are used as supports. The width is normally matched with rolls according to the original width, so that the two legs of the rolled piece can be straightened after straightening, and the pass shape of the straightening web of the upper straightening roll can be formed; The first and upper five straightening rolls are normally equipped with straightening rolls, which is beneficial to the normal biting and hole removal of the rolled piece, and at the same time ensures the supporting function of the upper leg and web of the rolled piece. Other upper rolls such as the upper second, third and fourth straightening rolls According to the specific specifications of the rolled piece, the width of the matching roll of the straightening roll is gradually narrowed, and it cooperates with the lower roll to achieve the purpose of straightening the web bending. The present invention implements straightening and matching rolls on the existing ten-roller profile steel straightening machine, realizes the supplementary straightening of rolled pieces with web bending, and improves the straightening stability and stability of common profile steel such as H-shaped steel and parallel leg channel steel. Straightening efficiency.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to a profile steel web bending correction process, which is suitable for correcting the web bending of hot-rolled H-shaped steel and channel steel with parallel legs. Background technique [0002] In recent years, with the rapid development of my country's economic construction, in order to protect the environment and save resources and energy, the country is gradually advocating the use of steel structures instead of reinforced concrete structures, and the domestic steel structure market is booming. Hot-rolled H-beam, common-beam and parallel-leg channel steel, as an economical cross-section steel, are widely used in the It occupies a dominant position in many steel structures. The domestic demand for H-shaped steel is increasing day by day, and the market prospect is very broad. [0003] Hot-rolled H-beams are generally rolled by a universal rolling mill. The pa...

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Problems solved by technology

[0007] Aiming at the technical problem in the background technology that it is difficult to correct the web bending of profiled steel (such as parallel leg channel steel, H-shaped steel) rolled by the universal rolling mill unit, the present invention provides a web bending correction process of profiled steel, through the existing ten The roll straightening machine is used for straightening and matching rolls to realize the supplementary straightening of rolled parts with web bending, and to improve the straightening stability and straightening efficiency of ordinary steel such as H-shaped steel and parallel leg channel steel.

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