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Relationship Between Interfacial Heat Transfer Coefficient and Interfacial Contact Evolution in Vacuum-Assisted High Pressure Die Casting
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Jian LIN1, Ganlin QIN1, Qin YANG2, Zhibai WANG2, Xiaomin XU2, Tiegang HU2, Duo XIANG2, Congchang XU1, Luoxing LI1
Mining and Metallurgical Engineering | 2026, 46(1) : 186 - 191
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Mining and Metallurgical Engineering | 2026, 46(1): 186-191
• MATERIALS •
Relationship Between Interfacial Heat Transfer Coefficient and Interfacial Contact Evolution in Vacuum-Assisted High Pressure Die Casting
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Jian LIN1, Ganlin QIN1, Qin YANG2, Zhibai WANG2, Xiaomin XU2, Tiegang HU2, Duo XIANG2, Congchang XU1, Luoxing LI1
Affiliations
  • 1.College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, Hunan, China
  • 2.Chongqing Chang' an Automobile Co., Ltd., Chongqing 400023, China
doi: 10.3969/j.issn.0253-6099.2026.01.031
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To investigate the relationship between interfacial heat transfer coefficient and evolution of interfacial contact during vacuum-assisted high pressure die casting, a combined approach of neural network and numerical simulation was adopted to obtain interfacial heat transfer coefficient and high-precision temperature field. By calculating the actual contact area between casting and mold during solidification, the evolution process of interfacial contact in vacuum-assisted high pressure die casting was studied. It is found that the variation trend of interfacial heat transfer coefficient is consistent with that of the actual contact area. Based on the variation of the actual contact area, the evolution of interfacial contact is divided into five stages. At different stages, pressure retards the decrease in the actual contact area by different actions and enhances the interfacial heat transfer coefficient. At the third stage (C), pressure has a direct impact on the actual contact area, resulting in a reduction of 8.5%-15.0%; at the fourth stage (D), the actual contact area is reduced by 49%.

high pressure die casting  /  boost pressure  /  finite element simulation  /  neural network  /  interfacial heat transfer coefficient  /  interfacial contact  /  contact area
林健, 秦甘霖, 杨琴, 王志白, 徐小敏, 胡铁刚, 向多, 徐从昌, 李落星. 真空辅助高压铸造界面换热系数与界面接触演变的关系研究. 矿冶工程杂志, 2026 , 46 (1) : 186 -191 . DOI: 10.3969/j.issn.0253-6099.2026.01.031
Jian LIN, Ganlin QIN, Qin YANG, Zhibai WANG, Xiaomin XU, Tiegang HU, Duo XIANG, Congchang XU, Luoxing LI. Relationship Between Interfacial Heat Transfer Coefficient and Interfacial Contact Evolution in Vacuum-Assisted High Pressure Die Casting[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 186 -191 . DOI: 10.3969/j.issn.0253-6099.2026.01.031
Appendix
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Year 2026 volume 46 Issue 1
94
18
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.01.031
  • Receive Date：2025-08-28
  • Online Date：2026-10-08
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  • Received：2025-08-28
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Affiliations
    1.College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, Hunan, China
    2.Chongqing Chang' an Automobile Co., Ltd., Chongqing 400023, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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