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Defect-free casting blank production method for direct rolling

A production method and a defect-free technology, applied in the field of slab production, can solve problems such as slab cracks, and achieve the effect of stable surface quality of the slab

Pending Publication Date: 2022-07-05
广西钢铁集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a defect-free slab production method for direct rolling, which solves the technical problem of defects such as cracks in the slab when the casting speed is increased

Method used

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  • Defect-free casting blank production method for direct rolling
  • Defect-free casting blank production method for direct rolling
  • Defect-free casting blank production method for direct rolling

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The inventor believes that to achieve direct billet rolling, the key is to ensure defect-free billet and increase the temperature of the billet. Further, through the observation and analysis of the production process, the inventor found that the development of the secondary cooling water distribution model is the core technology. If the cooling is strong, the slab temperature is too low to meet the needs of direct rolling. In ...

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Abstract

According to the defect-free casting blank production method for direct rolling, the improved efficient water tank type crystallizer is matched with the high-precision water jacket to improve the cooling uniformity of the copper pipe, guarantee is provided for increasing the pulling speed of a casting machine, and the defect-free casting blank production method for direct rolling is achieved through the improved special direct rolling water distribution model and the improved dense spraying nozzles which are matched at intervals. The casting speed of a casting machine is increased to 4.5 m / min from 2.8 m / min at most, the bleed-out rate of the casting machine is greatly reduced, the main components of the high-casting-speed casting powder are improved, and a guarantee is further provided for increasing the casting speed of the casting machine.

Description

technical field [0001] The invention relates to the field of casting slab production, in particular to a defect-free casting slab production method for direct rolling. Background technique [0002] With the intensified competition of iron and steel enterprises, reducing production costs has become the biggest competitive advantage of iron and steel enterprises. The heating furnace is a major energy consumption and pollutant discharger. The operating cost of the heating furnace is generally 25-30 yuan / ton. At present, all domestic steel companies are promoting the billet straight rolling process, which is an effective measure to save energy and reduce consumption and improve competitiveness. In direct rolling, the billet temperature must be increased to meet the rolling needs. To increase the billet temperature, measures such as increasing the drawing speed must be taken. However, the high drawing speed continuous casting billet is prone to defects such as cracks. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/055B22D11/22
CPCB22D11/225B22D11/055
Inventor 李建科梁日成李源源杨宗保陈立鹏何杨开陈仲华陈梁吴一凡古威张丰李洋吴照省
Owner 广西钢铁集团有限公司
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