scholarly journals A Study on the Effect of Process and Material Variables on the Hot Stamping Formability of Automotive Body Parts

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1029
Author(s):  
Kang Ho You ◽  
Heung-Kyu Kim
Keyword(s):  
High Temperature ◽  
Hot Stamping ◽  
Rate Sensitivity ◽  
Martensite Phase ◽  
Material Behavior ◽  
Body Parts ◽  
Automotive Body ◽  
Sheet Blank ◽  
Stamping Process ◽  
Automotive Body Parts

Hot stamping is a method capable of manufacturing high-strength automotive body parts by inducing a martensitic phase transformation through forming and die quenching after heating a metal sheet into a high temperature austenite phase. However, it is not easy to solve various formability problems occurring in the hot stamping process due to the complexity of the process and material behavior during high temperature forming. In this study, fracture-related forming limits and martensite phase ratio were selected as criteria for evaluating hot stamping formability. First, a hot stamping test was performed on a T-type part that simplified the B-pillar, an automotive body part, and the fracture behavior according to the temperature and thickness of the sheet blank was investigated. Additionally, forming analysis was performed on the hot stamping process of mass-produced B-pillar parts by varying the temperature of the sheet blank, the thickness of the sheet blank, the die-blank friction coefficient, and the strain-rate sensitivity of material among various process and material variables. Based on the analysis results, the effect of each process and material variable on the hot stamping formability of B-pillar parts was quantitatively analyzed. By utilizing the results of this study, it will be possible to solve the formability problem that occurs in the mass-production hot stamping process for automotive body parts and improve the quality of parts in the future.

scholarly journals Modelling kinetics of phase transformation for the indirect hot stamping process to focus on car body parts with tailored properties

2016 ◽  
Vol 228 ◽  
pp. 59-67 ◽  
Author(s):  
Paul Hippchen ◽  
Arnulf Lipp ◽  
Hannes Grass ◽  
Philipp Craighero ◽  
Michael Fleischer ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Hot Stamping ◽  
Body Parts ◽  
Car Body ◽  
Stamping Process ◽  
Kinetics Of

scholarly journals Development of 980 MPa Grade Steel Tube for Automotive Body Parts with Excellent Formability

Materia Japan ◽  
2010 ◽  
Vol 49 (3) ◽  
pp. 110-112
Author(s):  
Masatoshi Aratani ◽  
Yasuhide Ishiguro ◽  
Osamu Sonobe ◽  
Makio Gunji ◽  
Akio Sato
Keyword(s):  
Steel Tube ◽  
Body Parts ◽  
Automotive Body ◽  
Automotive Body Parts ◽  
Grade Steel

Polyurea/Amide-RIM Elastomers- A New Material for Exterior Automotive Body Parts

1989 ◽  
Vol 21 (1) ◽  
pp. 49-64 ◽  
Author(s):  
D.G. Schlotterbeck ◽  
G. Matzke ◽  
P. Horn ◽  
H.-U. Schmidt
Keyword(s):  
Body Parts ◽  
Automotive Body ◽  
New Material ◽  
Automotive Body Parts

Effect of Heating Parameters on the Part’s Properties in Hot Stamping Process

2012 ◽  
Vol 557-559 ◽  
pp. 2417-2422
Author(s):  
Rui Ge ◽  
An Long ◽  
Yin Chen
Keyword(s):  
Hot Stamping ◽  
High Strength Steels ◽  
Dimensional Accuracy ◽  
High Strength ◽  
Hardness Measurement ◽  
Material Behavior ◽  
Hot Forming ◽  
Accuracy Test ◽  
Stamping Process ◽  
Proper Design

In the automotive industry, the hot forming of high strength steels offers the possibility to obtain significant reduction of weight without affecting the structural performances of final products. Compared with conventional sheet metal forming, the proper design of hot stamping process chain requires the deep knowledge of both interface phenomena and material behavior at high temperatures in order to obtain the desired properties of final products in terms of microstructure and strength characteristics. The work presented in this paper aims at accurately evaluate the effect of heating parameters on the properties of final sheet components produced in hot forming operations. Different from that in the lab, all the samples and parts used for the experimental test were produced in the production line, which can objectively show the manufacturing properties and microstructure character of products in mass. Microstructure evaluation, hardness measurement and dimensional accuracy test after hot stamping were performed and considered. The best heating parameters for the researched hot stamping B-Pillar’s production were obtained through the above research.

scholarly journals A flexible fixture design method research for similar automotive body parts of different automobiles

2018 ◽  
Vol 10 (2) ◽  
pp. 168781401876127
Author(s):  
Kuigang Yu ◽  
Shiya Wang ◽  
Yanan Wang ◽  
Zhihong Yang
Keyword(s):  
Design Method ◽  
Fixture Design ◽  
Body Parts ◽  
Automotive Body ◽  
Automotive Body Parts

A New Hot Stamping Process with Quenching and Partitioning Treatment

2015 ◽  
Vol 1095 ◽  
pp. 673-676 ◽  
Author(s):  
Pei Xing Liu ◽  
Xiang Yun Yu ◽  
Kai Wang ◽  
Bin Zhu ◽  
Jian Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Retained Austenite ◽  
Hot Stamping ◽  
Quenching Temperature ◽  
Quenching And Partitioning ◽  
Servo Press ◽  
Stamping Process ◽  
Partitioning Time

A new hot stamping process with quenching and partitioning treatment is proposed in the paper. Compared to direct hot stamping process, the microstructures with some retained austenite not only including martensite are formed according to the constrained carbon equilibrium (CCE) model. During the new hot stamping process, tools with high temperature are used to control the quenching temperature (QT) between Ms and Mf, and the partitioning treatment of the part is also implemented in the tools by prolonging holding times. In this paper, different holding times (partitioning times) controlled by servo press, are used to research the influence of partitioning time on mechanical properties.

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