Process of Improved Hot Mandrel for Large Length-Diameter Ratio Warhead Melting Cast

YUE Xiaoyuan; ZHANG Huisuo; HAN Xuelian; LIU Hongli; WANG Yanjie; LIU Hengzhu; LIU Pengfei; CAO Hongsong

doi:10.11858/gywlxb.20200592

Volume 35 Issue 1

Jan 2021

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Chinese Journal of High Pressure Physics > 2021 > 35(1): 015302.

YUE Xiaoyuan, ZHANG Huisuo, HAN Xuelian, LIU Hongli, WANG Yanjie, LIU Hengzhu, LIU Pengfei, CAO Hongsong. Process of Improved Hot Mandrel for Large Length-Diameter Ratio Warhead Melting Cast[J]. Chinese Journal of High Pressure Physics, 2021, 35(1): 015302. doi: 10.11858/gywlxb.20200592

Citation:

YUE Xiaoyuan, ZHANG Huisuo, HAN Xuelian, LIU Hongli, WANG Yanjie, LIU Hengzhu, LIU Pengfei, CAO Hongsong. Process of Improved Hot Mandrel for Large Length-Diameter Ratio Warhead Melting Cast[J]. Chinese Journal of High Pressure Physics, 2021, 35(1): 015302. doi: 10.11858/gywlxb.20200592

Citation:

YUE Xiaoyuan, ZHANG Huisuo, HAN Xuelian, LIU Hongli, WANG Yanjie, LIU Hengzhu, LIU Pengfei, CAO Hongsong. Process of Improved Hot Mandrel for Large Length-Diameter Ratio Warhead Melting Cast[J]. Chinese Journal of High Pressure Physics, 2021, 35(1): 015302. doi: 10.11858/gywlxb.20200592

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Process of Improved Hot Mandrel for Large Length-Diameter Ratio Warhead Melting Cast

doi: 10.11858/gywlxb.20200592

YUE Xiaoyuan^{1, 2
,},
ZHANG Huisuo^{1, 2,*
,
,},
HAN Xuelian^{2, 3},
LIU Hongli^{2, 3},
WANG Yanjie^{2, 3},
LIU Hengzhu¹,
LIU Pengfei¹,
CAO Hongsong¹

1.
College of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, Shanxi, China
2.
Collaborative Innovation Center for Advanced Charging Technology, Taiyuan 030051, Shanxi, China
3.
Shanxi Jiangyang Chemical Co., Ltd., Taiyuan 030041, Shanxi, China

Received Date: 13 Jul 2020
Rev Recd Date: 25 Jul 2020

Abstract

Abstract

In order to improve melt-casting charge quality of the warhead with a large length-diameter ratio, a three-dimensional charge model was established by means of the finite element simulation method, and numerical simulation on the melt-casting charge process was carried out, including traditional casting and hot mandrel process casting. Then combined with the shrinkage principle and mechanism of the traditional hot mandrel process to improve charge quality, a multi-layered hot mandrel with optimized temperature controlling was proposed and its casting process simulation was undertaken to predict how it exerts effects on the charge quality. The results show that the radial solidification order of the grains can’t be changed and shrinkage as well as porosity would appear at the wider area of the explosive room in the traditional hot mandrel casting process. However, the defects of shrinkage and porosity can be avoided by changing the radial solidification order in the improved hot mandrel process, which just corresponds to our expectation.
- melt-casting charge,
- shrinkage and porosity,
- hot mandrel,
- solidification process

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References(21)

References

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