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Numerical simulation and experimental verification of a novel double-layered split die for high-pressure apparatus used for synthesizing superhard materials

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Abstract

Based on the principles of massive support and lateral support, a novel double-layered split die (DLSD) for high-pressure apparatus was designed to achieve a higher pressure-bearing capacity and larger sample cavity. The stress distributions of the DLSDs with different numbers of divided blocks were investigated by the finite element method and compared with the stress distributions of the conventional belt-type die (BTD). The results show that the cylinders and first-layer supporting rings of the DLSDs have dramatically smaller stresses than those of the BTD. In addition, increasing the number of divided blocks from 4 to 10 gradually increases the stress of the cylinder but has minimal influence on the stress of the supporting rings. The pressure-bearing capacities of the DLSDs with different numbers of divided blocks, especially with fewer blocks, are all remarkably higher than the pressure-bearing capacity of the BTD. The contrast experiments were also carried out to verify the simulated results. It is concluded that the pressure-bearing capacities of the DLSDs with 4 and 8 divided blocks are 1.58 and 1.45 times greater than that of the BTD. This work is rewarding for the commercial synthesis of high-quality, large-sized superhard materials using a double-layered split high-pressure die.

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Acknowledgement

We thank Changchun Ruiguang Science & Technology Co., Ltd. for technical assistance and financial support.

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Authors and Affiliations

  1. Roll Forging Institute, Jilin University, Changchun, 130025, China

    Zhuo Yi, Wen-zhi Fu, Ming-zhe Li, Liang Zhao & Li-yan Wang

  2. College of Materials Science and Engineering, Jilin University, Changchun, 130025, China

    Zhuo Yi, Wen-zhi Fu, Ming-zhe Li, Liang Zhao & Li-yan Wang

  3. Changchun Ruiguang Science & Technology Co., Ltd., Changchun, 130025, China

    Rui Li

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  1. Zhuo Yi
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  2. Wen-zhi Fu
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  3. Ming-zhe Li
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  4. Rui Li
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  5. Liang Zhao
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  6. Li-yan Wang
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Correspondence to Wen-zhi Fu.

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Yi, Z., Fu, Wz., Li, Mz. et al. Numerical simulation and experimental verification of a novel double-layered split die for high-pressure apparatus used for synthesizing superhard materials. Int J Miner Metall Mater 26, 377–385 (2019). https://doi.org/10.1007/s12613-019-1747-3

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  • DOI: https://doi.org/10.1007/s12613-019-1747-3

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