Online rolling and hot-forming process of heat-state plate/strip and application thereof

Abstract

The invention provides an online rolling and hot-forming process of a heat-state plate / strip. The online rolling and hot-forming process of the heat-state plate / strip is used for hot-bending and forming a heat-state steel plate or strip steel, so that the heat-state steel plate or the strip steel becomes profile steel with a specified space through a longitudinal cutting process or a hot bending process. The heat-state steel plate or the strip steel is firstly longitudinally cut and then hot-bent, firstly hot-bent and then longitudinally cut or longitudinal cut and hot-bent at the same time; during the longitudinal cutting process, the steel plate or the strip steel is longitudinally cut and slit; and during the hot bending process, the steel plate or the strip steel is continuously hot-bent and formed through a deformation compression roller group. According to the process, the heat-state plate / strip can be directly rolled and bent to form a specific profile steel cross section, and is longitudinally split into long-strip profile steel or a long-strip steel plate; and the long-strip profile steel can be directly used and can be further conveyed to a steel structure processing procedure so as to be welded into the profile steel. By adopting the new production process, the cutting and side processing procedures required for processing the steel plate into the profile steel can be omitted, and the required welding process is reduced or eliminated. The production cost is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of rolling in the iron and steel metallurgy industry, in particular to an online rolling thermoforming process for a hot plate / strip. Background technique [0002] Every year, the steel structure industry uses tens of millions of tons of steel for the construction of steel structure buildings. With the national policy of promoting prefabricated steel structure buildings, the demand for steel structure steel will increase significantly in the future. At present, the steel structure industry generally uses the combination welding of a large number of hot-rolled steel plates and a small amount of hot-rolled section steel to complete the main steel structure of the building. The finished hot-rolled steel plates need to be cut, assembled and continuously welded to meet the required cross-sectional shape. The cutting and welding process not only results in waste of materials and increased costs, but also requires ...

AI Technical Summary

Problems solved by technology

For the steel used in the main building of the steel structure, its cross-sectional size is large, and the thickness of the steel plate is relatively thick (generally 10mm to 30mm). It is difficult to produce with existing cold-formation equipment. It can be very large and very uneconomical, so there are almost no cold-rolled forming equipment and products with a thickness ≥ 10mm on the market

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