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Investigation of Heat Transfer in Hot Stamping of Boron Steel

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Abstract

An optimization-based numerical procedure was developed to determine the tool temperature-dependent heat-transfer coefficient (HTC) between the blank and tools during the hot stamping of boron steel. During the quenching period, HTC decreased with the increasing tool temperature. There was no obvious linear relationship between the two. The HTCs were 2493 and 856 W m−2 K−1, respectively, under the tool temperatures of 373 K and 723 K (100 °C and 450 °C).

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Abbreviations

\( T_{i,B}^{\text{Exp}} \) :

Blank experimental temperatures

\( T_{i,B}^{\text{Sim}} \) :

Blank calculating temperatures

\( T_{j,L}^{\text{Exp}} \) :

Lower tool experimental temperatures

\( T_{j,L}^{\text{Sim}} \) :

Lower tool calculating temperatures

δ B :

Error function of blank temperature

δ L :

Error function of lower tool temperature

B:

Blank

L:

Lower tool

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This study was supported by National Natural Science Foundation of China (51205162) and the National Natural Science Foundation of China (51275203).

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Authors and Affiliations

  1. School of Material Science and Engineering, Jilin University, Changchun, China

    Zhiqiang Zhang (Associate Professor), Conghao Liu (Postgraduate), Songfeng Meng (Postgraduate) & Xiaohui Zhao (Associate Professor)

  2. Roll Forging Research Institute, Jilin University, Changchun, China

    Xiangji Li (Associate Professor)

Authors
  1. Zhiqiang Zhang
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  2. Conghao Liu
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  3. Songfeng Meng
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  4. Xiangji Li
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  5. Xiaohui Zhao
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Corresponding author

Correspondence to Xiaohui Zhao.

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Manuscript submitted October 12, 2015.

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Zhang, Z., Liu, C., Meng, S. et al. Investigation of Heat Transfer in Hot Stamping of Boron Steel. Metall Mater Trans B 47, 824–827 (2016). https://doi.org/10.1007/s11663-015-0577-6

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