Research and application of key mold technology for hot stamping integral door ring of high strength steel

DOI

10.2991/978-94-6463-581-2_8How to use a DOI?

Keywords

High-strength steel; Hot stamping; Counter-bumping die technology; Nitrogen spring; In-die hydraulic cylinder

Abstract

This paper aims at the research and application of key mold technology for hot stamping integral door ring with high-strength steel. With the development of automobile industry, lightweight body has become an important trend in the manufacturing industry, and high-strength steel materials and hot stamping technology are widely used in automobile manufacturing. The research focuses on the use of anti-convex mold technology and nitrogen springs and other technologies to overcome the wrinkling problem of the inner ring flange and patch plate area of the door ring. The door ring is fabricated by using non-spliced weld blanks and local patch plate reinforcement method, and realized by hot stamping forming. Simulation results show that wrinkling and thinning problems exist in the door ring forming, and the mold crimping and forming forces need to be adjusted. The improved mold design adopts a counter-convex die structure, which effectively reduces the appearance of wrinkling. The test results show that the mechanical properties of the hot stamped parts perform well, with a pass rate of more than 98.3%. The study shows that the use of anti-convex die technology and in-die cylinder countertop technology can improve the production quality of the door ring and reduce the cost, which provides an important reference for the technological progress of the automobile manufacturing industry.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Yuan Yao
PY  - 2024
DA  - 2024/12/07
TI  - Research and application of key mold technology for hot stamping integral door ring of high strength steel
BT  - Proceedings of the 7th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU 2024)
PB  - Atlantis Press
SP  - 63
EP  - 70
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-581-2_8
DO  - 10.2991/978-94-6463-581-2_8
ID  - Yao2024
ER  -