A kind of production system and production method of channel section steel

Abstract

The invention provides a channel section steel production system and a production method thereof. The channel section steel production system comprises a feeding device, a heating device, a hot-rolling unit, a roll-bending unit and a fixed-length cutting device which are sequentially arranged. Flat steel blank raw materials are selected, heated through an electric induction heating device and then are fed into rolling mills of two machine frames to be subjected to rolling deformation, a first pass is used for thickness decrease, a second pass is used for plate shape forming of cross sections of rolled pieces before hot bending, and the two machine frames conducts deformation rolling on the raw materials simultaneously in a continuous-rolling state. By the adoption of simplified two-pass hot rolling, the thickness and plate shapes all cross section of flattened and spread channel section steel are rolled, waste heat is utilized to conduct hot bending forming on the continuous roll-bending unit, and fixed-length sawing, cooling and finishing are performed to obtain channel section steel products. The production method is simplified, hole type rolling pass is simplified, production difficulty is reduced, and the production success rate and finished material rate are improved. The number of the rolling mills is decreased, a production line is shortened, short-process production is achieved, and investment and follow-up maintenance cost are reduced.

Description

technical field [0001] The invention relates to the technical field of rolling in the iron and steel metallurgy industry, in particular to a production system and a production method of a novel compact short-flow channel section steel. Background technique [0002] The channel steel is a channel type (or C-type), and the leg has a certain tooth shape. It is pre-embedded in the concrete by welding / riveting with the upper connecting rod, and the surface is flush with the concrete. There are many types of channel steel. It has an anti-loosening design. It is used together with special T-bolts. It is not only convenient to fasten, but also can be adjusted arbitrarily. It is the first choice for many large-scale engineering projects such as railway tunnels, bridges, airports, etc. firmware. With the rapid development of my country's high-speed rail, the product after surface coating treatment has been widely used in high-speed rail tunnels because of its high anti-corrosion abil...

AI Technical Summary

Problems solved by technology

The disadvantages of this production method mainly include: old, complex, and heavy mechanical equipment; The consumption of rolls is high; subsequent hot bending is also carried out on traditional rolling mills, so that the production of channel steel based on this traditional production process has a high probability of scrapping and a low yield, generally not exceeding 90%, resulting in high production costs

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