Plate blank performance gradient distribution forming method based on ESP dynamic variable regulation

Abstract

The invention relates to a plate blank performance gradient distribution forming method based on an ESP dynamic variable regulation, and belongs to the field of steel and iron material rolling and deep processing. The method achieves online non-stop roller changing rolling of a variable-thickness plate blank through a '5+1' dynamic variable regulation strategy of a finish rolling unit, cascading with a stamping quenching technology after a laminar cooling procedure is achieved, industry integration of upstream rolling and downstream deep processing is achieved, a short-flow compact productionflow combining rolling-deep processing is realized, and performance variable gradient characteristic stamping quenched parts can be produced; and the method realizes integrated production from metallurgical raw materials to products, the transportation cost of intermediate links is saved, besides, complementary energy resources of a rolling process can be effectively utilized, the overall manufacturing process of plate blank deep processing is remarkably shortened, high-quality development of the rolling and deep processing industry is promoted, and the method is of important significance in promoting green development of the rolling and deep processing industry field, expanding dominant supply, optimizing productivity layout and the like.

Description

technical field [0001] The invention relates to the field of rolling and deep processing of iron and steel materials, in particular to a performance gradient distribution forming method of slabs based on ESP dynamic variable rules. Background technique [0002] The automobile industry is an important pillar industry of the national economy. High-strength steel plays an important role in reducing the weight of automobiles and improving the safety performance of automobiles. Higher is beneficial to achieve light weight and ensure crashworthiness. The loads borne by auto parts in service state are unevenly distributed. In order to ensure the overall rigidity of the car body and the impact energy absorption effect, the material performance needs and use requirements of different parts of the parts are required. Matching, that is, the different loads and usage requirements of various parts of the auto parts correspond to different performances. Therefore, designing the performanc...

AI Technical Summary

Problems solved by technology

[0003] The existing variable thickness plate forming manufacturing technology is that the upstream rolling process and the downstream deep processing manufacturing process belong to different workshops or production areas. The production process of the upstream rolling process is continuous casting→rough rolling unit→pendulum shear→induction heating→descaler box →Finish rolling unit→laminar flow cooling→shearing→coiling, the high-strength steel with waste heat is coiled into coils by the coiler, and then uncoiled→variable thickness rolling→variable thickness slab to produce variable thickness slabs The billet is transported to the downstream deep processing and manufacturing process for stamping and quenching forming, processed into stamping and quenching parts with variable thickness, and then transported to the vehicle manufacturing enterprise for assembly. In the upstream rolling process, the stoppage and roll replacement caused by roll wear will affect the production of the enterprise Efficiency, due to the separation of upstream rolling process and downstream deep processing and manufacturing process technology and equipment, additional high transportation costs, and stamping and quenching parts in the manufacturing process from raw materials to products cause a lot of waste of energy resources, steel material rolling and Deep processing production itself is a high-energy-consuming industry, so it is of great significance to develop and research a high-efficiency rolling and deep processing production process centered on shortening the process flow, speeding up the production rhythm, realizing continuous production, and improving production efficiency.

Images