An online rolling thermoforming process of hot plate/strip and its application

Abstract

The invention provides an on-line rolling thermoforming process for hot plates / strips, which is used for hot bending forming of hot steel plates or strips, after the hot steel plates or strips are subjected to slitting process and hot bending process become a section steel with a specified shape, the hot steel plate or strip is first slit and then hot-bent, first hot-bent and then slit, or slitting and hot-bending are performed simultaneously. In the slitting process, the steel plate or strip The steel is longitudinally cut into strips; in the hot bending process, the steel plate or strip steel is continuously hot bent and formed by the deformed roller group. This process can directly roll and bend the hot plate / strip into a specific steel section, and split it longitudinally into a long steel bar or a long steel plate; the long steel bar can be used directly or sent to the steel structure processing process to weld the formed steel. Adopting this new production process can omit the cutting and edge treatment processes required for steel plate processing and forming steel, and reduce or eliminate the required welding process. Reduce production costs and improve production efficiency.

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 ...

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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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