Research Progresses on Technologies and Theory of Blanks with Variable Thicknesses

Author:

Wang Xiaogong1,Wang Sai2ORCID,Lu Rihuan3,Xuan Yanni4,Zhang Sijia5,Zhang Guangji6,Hu Xianlei5,Liu Xianghua5,Chen Liansheng1

Affiliation:

1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, China

2. Zhejiang Laboratory, Research Institute of Interdisciplinary Innovation, Hangzhou 311121, China

3. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China

4. School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, China

5. The State Key Laboratory of Rolling & Automation, Northeastern University, Shenyang 110819, China

6. Dong Bao Metal Material Technology Ltd., Shenyang 110103, China

Abstract

Under the background of dual carbon policy as well as energy conservation, blanks with variable thicknesses (BVTs) which act as structural components have drawn extensive attention due to their excellent strength and formability and reasonable load-bearing distribution characteristics, particularly in the field of automotive manufacturing. With these advantages, the manufacturing technologies of these plates using more efficient rolling methods have thus emerged. This article summarizes four methods and their characteristics for manufacturing plates with variable thicknesses based on rolling technology. In addition, a review is conducted on the latest research progress of the metal flow and rolling theories of existing plates with different thicknesses in the longitudinal and transverse direction.

Funder

National Natural Science Foundation of HeBei province

National Natural Science Foundation of China

Publisher

MDPI AG

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