Manufacturing process and equipment for discontinuous metal strip and plate between continuous casting and rolling

Abstract

A process and equipment for producing metal strips with a thickness of 0.14-20 mm and metal sheets with a thickness of 10-100 mm from a blank (1) with a thickness of 30 to 300 mm by means of arcuate continuous casting. The cast blank ( 1 ) is heated in an induction furnace ( 12 ) and then conveyed discontinuously directly to the rolling step ( 11 ) without any intermediate product. After controlled cooling, the rolled flat product is drawn into a plate (20) by a cutting and drawing machine (14), or wound onto a reel to form a strip coil (15) of a continuous strip. It may be cut by a cutting device (14') downstream of the cooling system (13). A surface cooling device (13') may be provided between the rolling stands. In relation to thickness reduction and end product quality, the feed rate from casting to rolling end is gradually increased by regulation in the cascade in the downstream direction.

Description

technical field [0001] The present invention relates to a discontinuous metal strip and plate manufacturing process and related system from continuous metal casting to the final rolling stand, in particular to a flat steel product manufacturing process and system without any intermediate products. Background technique [0002] It is known that in the steel industry, considering the increase of raw material cost and power consumption, the increase of global market competition and the limitation of anti-pollution standards, it is necessary to adopt certain methods to manufacture high-quality hot-rolled strip coils and plates. Lower investment costs and product costs are required, which in turn enables the production of thinner and smaller strip thicknesses. The result is a more competitive industry with end products that consume less electricity and minimize environmental harm. [0003] In recent years, considerable progress has been made in this regard, as shown in patents E...

AI Technical Summary

Problems solved by technology

The continuous casting outlet has a high temperature (about 1400°C) so that the idea of ​​using the hot material as much as possible in the subsequent rolling process is interesting, but it is not feasible in practice, because it is found that if a large flow of continuous casting at such a high temperature Blank, the surface temperature at the exit of continuous casting will be as high as 1150°C, which will cause irregular meniscus area, and then cause blank defects or even fracture

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