Transactions of Materials and Heat Treatment

Title：Test and application of thermal expansion property for boron steel in thermoforming

Authors： An Baoqin Mu Yuehui Chu Shuyun Yu Xianglei Sun Yaping Li Yonggang Liu Chizhen

Unit： Lingyun Industrial Co. Ltd.

KeyWords： thermoforming B1500HS boron steel coefficient of thermal expansion profile Pamstamp simulation

ClassificationCode：TG156.3

year,vol(issue):pagenumber：2020,45(6):200-203

Abstract：

The accuracy and reliability of blank delivery have important influence on the production efficiency in the hot stamping production process of boron steel. Then, the thermal expansion property of B1500HS boron steel was studied by the self-developed thermal expansion experimental device, and the thermal expansion law of B1500HS boron steel was obtained by combining Pamstamp simulation with experiment to predict accurately the profile changes of B1500HS boron steel after thermal expansion. The results show that the expansion results of Pamstamp simulation are very close to the experimental results to study the thermal expansion simulation of boron steel, and the longitudinal expansion amount is larger than the width expansion after the expansion of sheet metal. Not only the shape of inner hole for sheet metal is changed, but also the central position of hole is changed greatly. Thus, the above research provides a basis for the design of blank positioning device and improves the accuracy and efficiency of blank delivery in the production process and the manufacturing accuracy and stability of parts.

Funds：

国家科技重大专项（2018ZX04023-002）

安保芹（1967-），女，学士，高级工程师 E-mail：anbaoqin@lygf.com

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