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Low-yield-ratio thin strip steel continuous casting and continuous rolling production line and production process

A production process and low yield-strength ratio technology, which is applied in the field of low-yield-ratio thin strip steel continuous casting and rolling production lines and production processes, can solve the problem of difficulty in achieving full ferrite rolling, affecting coiling temperature, and large temperature fluctuations. and other problems, to achieve the effect of reducing production line construction and operation investment costs, reducing the number of induction heating groups, and low rolling temperature

Active Publication Date: 2020-08-28
CISDI ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still exists in the realization of ferrite rolling in the true sense: 1. Cooling between stands and after rolling, resulting in large temperature fluctuations; 3. If the final rolling and coiling temperature are to be guaranteed, the entrance temperature of the finishing rolling will be in the two-phase region of austenite and ferrite, which will cause the mixed crystal phenomenon of the final structure and affect the performance

Method used

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  • Low-yield-ratio thin strip steel continuous casting and continuous rolling production line and production process
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  • Low-yield-ratio thin strip steel continuous casting and continuous rolling production line and production process

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Embodiment Construction

[0027] The following describes the implementation of the present invention through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] It should be noted that the illustrations provided in this embodiment only illustrate the basic idea of ​​the present invention in a schematic way, and the figures only show the components related to the present invention instead of the number, shape, and shape of the components in actual implementation. For size drawing, the type, quantity, and proportion of each component can be changed at will during actual implementation, and the co...

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Abstract

The invention belongs to the technical field of steel continuous casting and continuous rolling, and particularly discloses a low-yield-ratio thin strip steel continuous casting and continuous rollingproduction line and a production process. The production line comprises a continuous casting machine, a high-pressure water rough descaling device, a rough rolling unit, a swing shear, a waste blankpushing and stacking device, an emergency shear, an induction heating furnace, a high-pressure water fine descaling device, a finishing rolling unit, a high-speed flying shear and a coiling unit whichare sequentially arranged in the rolling direction. The production process comprises the steps of continuous casting blank forming, high-pressure water rough descaling, rough rolling, induction heating, high-pressure water fine descaling, finish rolling, high-speed flying shear coil dividing and coiling. According to the low-yield-ratio thin strip steel continuous casting and continuous rolling production line and the production process, by additionally arranging rough descaling, reducing the number of induction heating sets, lengthening the distance between finish rolling middle racks and shortening the distance between a finish rolling tail rack and a recoiling machine, production of thin strip steel with high surface quality and low yield ratio is achieved; and meanwhile, due to the fact that rolling line equipment is reduced and the length of the production line is shortened, the construction and operation investment cost of the production line can be reduced.

Description

Technical field [0001] The invention relates to the technical field of steel continuous casting, in particular to a low yield ratio thin strip continuous casting and rolling production line and production process. Background technique [0002] After continuous casting and rolling development, representative technologies such as CSP, ISP, FTSR, ESP, MCCR have been formed. In recent years, the headless continuous hot rolling technology represented by the Italian Arvedi's ESP has achieved good industrial applications, and can stably produce thin strip steel with a thickness of less than 1.2mm, breaking through the thickness forbidden zone that cannot be covered by conventional hot rolling. Compared with conventional hot continuous rolling, ESP has the following advantages: Endless rolling eliminates strip threading and tail flicking, which greatly improves the control accuracy and stability of the overall length of the coil; continuous casting and rolling lines Tightly connected, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14
CPCB21B1/463C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14
Inventor 韩会全王万慧
Owner CISDI ENG CO LTD
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