Hot stamping of load adjusted structural parts

authored by: Bernd Arno Behrens, Anas Bouguecha, Christoph Michael Gaebel, Jörn Moritz, Jens Schrödter
Abstract: The importance of high-strength steel concepts for car bodies has increased in recent years due to the necessity of weight reduction and improved crash safety. By using hot stamping or also known as press hardening of boron alloyed heat-treatable steels, it is possible to produce parts with a much higher strength than by cold forming processes. Depending on the stress profile of a structural part, it might be desirable to have different material rigidity in the part, with some high strength and other more ductile areas, so called "Tailored properties". There are a variety of methods to produce such parts, but all of these methods have currently still major challenges. Two methods to manufacture parts with tailored properties, these challenges and corresponding approaches are presented in this paper. This is on the one hand subsequently cooling in a spray field, which currently is still in the development phase because of challenges related to distortion. And on the other hand, the masked austenitization, which is used by only a few manufacturers due to the lack of experience, the impairments of coating condition and the great demands on the process management concerning re-cooling of the mask. Both variants are forward-looking and deliver high potential for further research.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Conference article
Journal: Procedia Engineering
Volume: 81
Pages: 1756-1761
No. of pages: 6
ISSN: 1877-7058
Publication date: 15.10.2014
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Engineering
Electronic version(s): https://doi.org/10.1016/j.proeng.2014.10.227 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{b3a0064d28db4a5c8f90a171b755c467,
title = "Hot stamping of load adjusted structural parts",
abstract = "The importance of high-strength steel concepts for car bodies has increased in recent years due to the necessity of weight reduction and improved crash safety. By using hot stamping or also known as press hardening of boron alloyed heat-treatable steels, it is possible to produce parts with a much higher strength than by cold forming processes. Depending on the stress profile of a structural part, it might be desirable to have different material rigidity in the part, with some high strength and other more ductile areas, so called {"}Tailored properties{"}. There are a variety of methods to produce such parts, but all of these methods have currently still major challenges. Two methods to manufacture parts with tailored properties, these challenges and corresponding approaches are presented in this paper. This is on the one hand subsequently cooling in a spray field, which currently is still in the development phase because of challenges related to distortion. And on the other hand, the masked austenitization, which is used by only a few manufacturers due to the lack of experience, the impairments of coating condition and the great demands on the process management concerning re-cooling of the mask. Both variants are forward-looking and deliver high potential for further research.",
keywords = "Hot stamping, Masked austenitization, Press hardening, Spray cooling, Tailored properties",
author = "Behrens, {Bernd Arno} and Anas Bouguecha and Gaebel, {Christoph Michael} and J{\"o}rn Moritz and Jens Schr{\"o}dter",
note = "Funding information: The authors would like to thank the German Research Foundation (DFG) for the financial support of the research projects concerning hot stamping (1691/11-2) and the Collaborative Research Center 489, subproject T8.; 11th International Conference on Technology of Plasticity, ICTP 2014 ; Conference date: 19-10-2014 Through 24-10-2014",
year = "2014",
month = oct,
day = "15",
doi = "10.1016/j.proeng.2014.10.227",
language = "English",
volume = "81",
pages = "1756--1761",
journal = "Procedia Engineering",
issn = "1877-7058",
publisher = "Elsevier BV",
}