Auto-pouring Design for Vacuum Furnaces Based on the Constant-flow Tilting and Gating Horizontal Motion Compensation Model

ZHENG Hang; YU Shiya; HAO Xin; LIU Guohuai; LIU Xu; WANG Ye; YI Chushan; WANG Zhaodong

doi:10.3969/j.issn.1674-6457.2026.04.023

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Journal of Netshape Forming Engineering ›› 2026, Vol. 18 ›› Issue (4) : 221-227. DOI: 10.3969/j.issn.1674-6457.2026.04.023

Advanced Manufacturing Technology and Equipment

Auto-pouring Design for Vacuum Furnaces Based on the Constant-flow Tilting and Gating Horizontal Motion Compensation Model

ZHENG Hang¹, YU Shiya¹, HAO Xin¹, LIU Guohuai², LIU Xu³, WANG Ye³, YI Chushan¹, WANG Zhaodong²

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Abstract

In order to avoid the poor pouring stability, uncontrollable fluid flow behavior, low pouring accuracy and other shortcomings of the traditional manual control in the pouring process, the work aims to improve the vacuum pouring equipment, establish a mathematical model and develop a PLC program to optimize the quality of castings. According to actual working conditions, mathematical modeling was conducted on the tilting process of the crucible during vacuum pouring. Based on the instantaneous relationship between the crucible tilting angular velocity and the pouring velocity of the superalloy melt, a horizontal movement compensation model for the pouring cup under constant flow rate was established. The model was compiled in MATLAB and the corresponding VC++ programs and PLC programs were finally developed. The calculated auto-pouring curve was then input into the vacuum pouring equipment. The auto-pouring curve obtained by calculation according to the input of actual parameters could compensate the transverse displacement caused by the positional shift of the liquid metal generated in the falling process thought the movement of pouring platform, ensuring the melt entering into the pouring cup completely. The application of the crucible tilting and pouring platform horizontal displacement compensation model developed in this work can effectively ensure the stability of the pouring process of nickel-based superalloy during precision casting.

Key words

nickel-based superalloy / vacuum precision casting / auto-pouring / crucible tilting model / movement compensation model

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ZHENG Hang, YU Shiya, HAO Xin, LIU Guohuai, LIU Xu, WANG Ye, YI Chushan, WANG Zhaodong. Auto-pouring Design for Vacuum Furnaces Based on the Constant-flow Tilting and Gating Horizontal Motion Compensation Model[J]. Journal of Netshape Forming Engineering. 2026, 18(4): 221-227 https://doi.org/10.3969/j.issn.1674-6457.2026.04.023

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