Local Design and Near Net Shape Optimization of Typical Ultra-High Strength Steel B-Pillar in Hot Stamping

2014 ◽  
Vol 1063 ◽  
pp. 297-300 ◽  
Author(s):  
Ya Xu ◽  
Chao Wang ◽  
Yi Lin Wang ◽  
Yi Sheng Zhang
Keyword(s):  
Finite Element ◽  
Deep Drawing ◽  
High Strength Steel ◽  
Hot Stamping ◽  
High Strength ◽  
Forming Process ◽  
Inverse Algorithm ◽  
Ultra High Strength Steel ◽  
Near Net Shape ◽  
The Right

Due to the deep drawing structure and box-shaped design in hot stamping, the typical ultra-high strength steel B-pillar was reasonably optimized to eliminate wrinkles in big end, assure the blank in the right position and meet the requirements of assembly. The finite element inverse algorithm was used to reverse the original blank of optimized part and production experiments of full-scaled part were performed to analyze the effect of optimized blank on the forming process.

Hot Spline Forming of Ultra-High Strength Steel Gear Drum Using Resistance Heating

2014 ◽  
Vol 622-623 ◽  
pp. 201-206 ◽  
Author(s):  
Kenichiro Mori ◽  
Tomoyoshi Maeno ◽  
Shohei Nakamoto
Keyword(s):  
Deep Drawing ◽  
High Strength Steel ◽  
Side Wall ◽  
High Strength ◽  
Axial Direction ◽  
Resistance Heating ◽  
Sectional Area ◽  
Forming Process ◽  
Cross Sectional ◽  
Ultra High Strength Steel

A hot spline forming process of die-quenched gear drums using resistance heating of a side wall of a cup formed by cold deep drawing and ironing was developed. The side wall having uniform cross-sectional area is resistance-heated by passage of the current in the axial direction, the heated side wall of the drawn cup is ironed and is finally die-quenched. The gear drum was successfully formed and the hardness was between 400 and 500 HV. Not only the formability was improved but also the formed dram was hardly oxidised because of rapid resistance heating.

GPU Accelerated Finite Element Simulation for Ultra-High Strength Steel Quenching

2013 ◽  
Vol 842 ◽  
pp. 337-340
Author(s):  
Chao Wang ◽  
Bin Zhu ◽  
Liang Wang ◽  
Yi Lin Wang ◽  
Yi Sheng Zhang
Keyword(s):  
Finite Element ◽  
Latent Heat ◽  
High Strength Steel ◽  
Thermal Contact ◽  
Hot Stamping ◽  
High Strength ◽  
Heat Processing ◽  
Processing Unit ◽  
Ultra High Strength Steel ◽  
Quenching Process

During the hot stamping of ultra-high strength steel (UHSS), the quenching effect of the mold on the sheet plays an important role to achieve the transition from austenite to martensite. Thus a finite element model for the quenching process of UHSS is established in this paper. The key points of the model include contact thermal conduction and the latent heat processing of phase transforming. Finite element program has been developed to calculate the temperature field of the UHSS quenching process, and temperature measurement device was used to get the temperature-time curve of the mold and the sheet to validate the calculation results. It can be concluded that the latent heat and thermal contact resistance have a critical influence on the temperature filed of the sheet during the hot stamping process. Finally, the parallel computation technology based on GPU(Graphics processing unit) was adopted to accelerate the calculation.

Optimization and Springback Control of Ultra-High Strength Steel Door Beam Forming Process

2010 ◽  
Vol 154-155 ◽  
pp. 1033-1039
Author(s):  
Xu Zhang ◽  
Jie Zhou
Keyword(s):  
High Strength Steel ◽  
Room Temperature ◽  
Hot Stamping ◽  
High Strength ◽  
Manufacturing Companies ◽  
Forming Process ◽  
Ultra High Strength Steel ◽  
Influence Of Temperature On ◽  
The Cost ◽  
Springback Control

The door beam inside the car door is an key component to improve the security of passengers, most great automobile manufacturing companies use ultra-high strength steel plate to manufacture it，however, it is very difficult to form in room temperature，so commonly it is made by hot stamping but the cost is too high. This article gives a solution to deal with this problem by the use of FEM software in simulating and optimizing the forming process of one kind of ultra-high strength steel door beam in room temperature, and main study is in the influence of temperature on internal organization changes of the ultra-high strength sheet and springback by comparing the simulation result and real sample, and meanwhile convex roofs are added in the addendum to optimize the surface. It is helpful on how to design die face in manufacturing the related ultra-high strength steel parts.

Study on Hot Forming Process and Spring-Back of Ultra -High Strength Steel Based on ABAQUS

2012 ◽  
Vol 482-484 ◽  
pp. 2430-2437 ◽  
Author(s):  
De Sen Yang ◽  
Wen Liu ◽  
Guang Jun Hu ◽  
Jie Zhou ◽  
Zhu Su
Keyword(s):  
High Strength Steel ◽  
Simulation Analysis ◽  
Hot Stamping ◽  
High Strength ◽  
Hot Forming ◽  
Combination Method ◽  
Spring Back ◽  
Forming Process ◽  
Ultra High Strength Steel ◽  
Shaped Part

To research the key factor that affect on material characteristic of hot stamping, this paper studied the spring-back problem of hot forming of the ultra-high strength steel, "U" shaped part by using the combination method of numerical simulation and experimental verification. By obtaining the data of BR1500 HS isothermal tensile test, it established a "U" shaped part of thermal-mechanical coupled model which is based on ABAQUS to analyze the influences of forming speed and holding time on the forming properties. Simulation analysis showed that: When the forming speed of sheet metal is faster than 35mm/s, the rebound value is small, and further increase has no significant effect on the rebound; after holding 6s, the temperature quenching would become stable. The results verify the reliability of the finite element model. Also the study has provided a theoretical basis for determining the process parameters of the type of steel hot forming.

Quenchability improvement and control simplification by ice mandrel in hot stamping of ultra-high strength steel hollow parts

2021 ◽  
Vol 64 ◽  
pp. 916-926
Author(s):  
Ali Talebi-Anaraki ◽  
Tomoyoshi Maeno ◽  
Ryohei Ikeda ◽  
Kazui Morishita ◽  
Ken-ichiro Mori
Keyword(s):  
High Strength Steel ◽  
Hot Stamping ◽  
High Strength ◽  
Ultra High Strength Steel ◽  
And Control

scholarly journals Improvement of formability using partial cooling during transfer in hot stamping of ultra-high strength steel parts

2018 ◽  
Vol 15 ◽  
pp. 1119-1126 ◽  
Author(s):  
Yasutaka Suzuki ◽  
Ken-ichiro Mori ◽  
Tomoyoshi Maeno ◽  
Kazuki Sakakibara ◽  
Yohei Abe
Keyword(s):  
High Strength Steel ◽  
Hot Stamping ◽  
High Strength ◽  
Ultra High Strength Steel

Ultra-High Strength Steel Hot Stamping Technology and Devices

2014 ◽  
Vol 1063 ◽  
pp. 237-243
Author(s):  
Zhong De Shan ◽  
Qin Tai Yan ◽  
Chao Jiang ◽  
Wen Juan Rong
Keyword(s):  
Tensile Strength ◽  
High Strength Steel ◽  
Hot Stamping ◽  
Research Work ◽  
High Strength ◽  
Parameters Optimization ◽  
Systematic Research ◽  
China Academy ◽  
Ultra High Strength Steel ◽  
Vehicle Structure

Ultra High Strength Steel (UHSS) hot stamping technology is a special process which can enhance the steel tensile strength to 1500MPa. Appling this technology in producing vehicle structure parts can make car lighter and safer. In China there are more and more automobile enterprises adopt this technology. To master and extend the skill, China Academy of Machinery Science & Technology (CAM) have done systematic research, such as the strengthen mechanism of the steel, hot stamping key devices designing, forming and quenching integrated mould designing, stamping process parameters optimization, etc.. By now, CAM has mastered the mass production technology of vehicle parts, which can guarantee its shape and tensile strength, and produced such typical parts as door-beam, B pillar, etc.. The paper is an introduction of the research work and achievement about UHSS hot stamping developed by CAM.

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