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

Zhuo Yi; Wen-zhi Fu; Ming-zhe Li; Rui Li; Liang Zhao; Li-yan Wang

doi:10.1007/s12613-019-1747-3

Volume 26 Issue 3

Mar. 2019

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(3): 377-385

Zhuo Yi, Wen-zhi Fu, Ming-zhe Li, Rui Li, Liang Zhao, and Li-yan Wang, 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(2019), No. 3, pp. 377-385. https://doi.org/10.1007/s12613-019-1747-3

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Zhuo Yi, Wen-zhi Fu, Ming-zhe Li, Rui Li, Liang Zhao, and Li-yan Wang, 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(2019), No. 3, pp. 377-385. https://doi.org/10.1007/s12613-019-1747-3

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Research Article

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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Corresponding author:
Wen-zhi Fu E-mail: fwz@jlu.edu.cn
Received: 22 May 2018; Revised: 1 September 2018; Accepted: 25 September 2018

Abstract

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.
- split die;
- prismatic cylinder;
- pressure-bearing capacity;
- high-pressure apparatus;
- superhard material;
- FEM

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References

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