A kind of continuous casting and rolling endless rolling method of thin strip steel and rolling production line thereof

A technology of continuous casting and rolling and endless rolling, which is applied in the direction of metal rolling, and can solve problems such as surface quality defects of strip steel, limited product varieties, specifications, and contradictory ideas

Active Publication Date: 2022-03-11
CISDI ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are some patents related to the application of ferritic rolling technology to ESP production line, but there are many problems in these patents when realizing true ferritic rolling. It is extremely difficult to control the starting rolling temperature of plain body rolling. If the starting rolling temperature is low, descaling will be unfavorable, while ESP only relies on descaling before finishing rolling, which will cause defects in the surface quality of the strip and bring subsequent genetic defects. The coiling temperature is too low, which is contrary to the concept of high-temperature coiling; if descaling is considered, the starting rolling temperature will be increased, and multiple stands will be in the austenitic-ferrite dual-phase region during the finishing rolling of the strip. Rolling, prone to mixed crystal phenomenon, affecting the mechanical properties of the product
[0005] In addition, some patents have developed specialized ferritic rolled thin strip steel production lines, but due to the limited product varieties and specifications that can be produced, the ability to resist market fluctuations is poor

Method used

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  • A kind of continuous casting and rolling endless rolling method of thin strip steel and rolling production line thereof
  • A kind of continuous casting and rolling endless rolling method of thin strip steel and rolling production line thereof
  • A kind of continuous casting and rolling endless rolling method of thin strip steel and rolling production line thereof

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Embodiment Construction

[0038] Embodiments of the present invention are described below through specific examples, and 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 implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0039] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention belongs to the technical field of continuous casting and rolling of iron and steel, and relates to a continuous casting and rolling endless rolling method of thin strip steel and a rolling production line thereof, which include successively connected continuous casting machines, rough rolling units, pendulum shears, and waste billet pushing out. And stacking device, heating device Ⅰ, pre-finishing rolling unit, heating device Ⅱ, emergency shear, finishing rolling unit, ultra-fast cooling device, laminar cooling device, high-speed flying shear and coiling unit, in which heating device Ⅱ realizes the intermediate billet The switching of temperature required for II austenitic rolling and ferritic rolling, the selection of 3 to 4 finishing stands makes it easier to control the starting rolling temperature when the intermediate billet II is ferritic rolling, and the heating device is reasonable Temperature control enables both austenitic rolling and ferritic rolling to produce strip steel on the same production line, enhancing the market competitiveness of thin strip steel.

Description

technical field [0001] The invention belongs to the technical field of continuous casting and rolling of iron and steel, and relates to a thin strip steel continuous casting and rolling endless rolling method and a rolling production line thereof, in particular to a method for realizing austenitic rolling and ferrite rolling on the same production line. The invention discloses a continuous casting and rolling endless rolling method and rolling production line of thin strip steel for body rolling. Background technique [0002] Since 1989 when Nucor Steel Corporation of the United States built and put into operation the world's first CSP production line, the continuous casting and rolling process technology has achieved rapid development for decades. The ISP technology of the German Demark Company and the CONROLL technology of the Austrian voestalpine Company , Japan's Sumitomo's QSP technology, Italy's Danieli's FTSR technology, and Italy's Arvedi's ESP technology have been l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/46B21B1/26
CPCB21B1/463B21B1/26
Inventor 肖学文张万里韩会全李轲杨春楣胡建平
Owner CISDI ENG CO LTD
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