Method for manufacturing high strength steel sheet in short process, high strength steel sheet and application of high strength steel sheet

Abstract

The invention discloses a method for manufacturing a high strength steel sheet in a short process, the high strength steel sheet and application of the high strength steel sheet, and belongs to the field of metallurgy rolling and deep processing. The method comprises the steps that in the treating process of thin slab continuous casting and rolling, a thin slab which is subjected to finish rollingby a finishing mill group is obtained, and then the thin slab is directly cut into a preset size and is subjected to hot stamping processing after meeting the target temperature of hot stamping by induction heating to manufacture the high strength steel sheet. The method for manufacturing the high strength steel sheet in a short process realizes the integrated production from raw materials to products, saves the transportation cost of intermediate links, can achieve the purposes of energy saving, consumption reduction and green production, significantly shortens the overall manufacturing process of plate deep processing, and has the advantages of ultra-short process, deep processing and multi-variety small batch mass customization production.

Description

technical field [0001] The invention belongs to the field of metallurgical rolling and deep processing, in particular to a method for producing high-strength steel plates in a short process, high-strength steel plates and applications thereof. Background technique [0002] The iron and steel industry is the main carrier of national industrial responsibilities. In the new period of development of China's iron and steel industry, it is currently facing many challenges such as supply-side structural reform, ecological environmental protection, high-quality development, personalized customization and increasingly demanding service requirements. Focusing on process-based intelligent manufacturing and large-scale personalized customization, iron and steel enterprises have accelerated structural adjustment, introduced the most advanced equipment and technology by means of market and reform, continued to promote product upgrades and technological innovation, and achieved transformati...

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Problems solved by technology

[0009] The above process reengineering has realized the joint reorganization of upstream rolling enterprises and downstream deep processing enterprises, but it is applied to traditional hot rolling lines or cold rolling lines, which generally belong to different enterprises or different workshops, and produce products with different thickness specifications, which are limited by the output of rolling mills. The upstream rolling cannot realize endless rolling production, and in the laminar cooling stage of hot rolling, it is divided into strong zone, conventional zone and fine-tuning zone, and there are uncontrollable random disturbance variables including cooling water volume, water pressure and water flow The flow state, speed, thickness, etc. have strong time-varying properties. In order to improve the control accuracy, it is necessary to remove the cooling water on the surface of the plate during the subsequent hot stamping deep processing, so as not to affect the forming performance and surface quality of the subsequent hot stamping material.

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