Continuous casting and rolling productive technology for figured steel

Abstract

The continuous special-steel casting and rolling production process is combination of ultrahigh speed near-finish continuous casting technology and new generation steel rolling technology and can realize automatic whole-line control. It has high production efficiency, low power consumption and compact technological process; no need of protecting slag and lubricant during continuous casting, and synchronous motion of the crystallizer and billet casing. Starter head is used to block the bottom of the crystallizer during starting the continuous casting machine, and the billet casing demolded from the crystallizer is cooled in two sections and fed with holding roller to rolling and straightening machine for direct rolling. The present invention has compact technological process, reasonable matter flow and environment friendship and may be used in integrated production of special steel.

Description

technical field [0001] The invention belongs to the production technology of steel products, and in particular relates to the integrated production technology of continuous casting and rolling, and specifically relates to the integrated production of near-end casting and rolling of special-shaped section steel profiles. Background technique [0002] In order to further improve production efficiency and reduce costs, near net shape continuous casting and rolling is the mainstream of development. The near-net shape thin strip continuous casting and rolling technology is at the forefront. For example: (1) CSP production process: Schloemann-Siemag (SMS) compact hot strip production (CSP) uses a funnel-shaped crystallizer to solve the problem of molten steel supply. The continuous casting machine is a vertical bending type, and the cast slab is directly sent to the roller After being heated in a channel heating furnace and dephosphorized by high-pressure water, it is rolled by a...

AI Technical Summary

Problems solved by technology

Near-net-shape continuous casting of special-shaped steel, due to relatively large surface area and complex cross-section (for example, the web thickness of H-shaped steel is less than 30mm), it is difficult to control the surface quality by traditional continuous casting technology, the casting resistance is large, and pouring is difficult. Whether or not high casting speed can be achieved is a restrictive link in the realization of continuous casting and rolling.

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