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| Application Research on Temperature Control System for Phosphating Solution |
| LU Xianshun1**, SHENG Ruji2, TIAN Chong1, CAO Yubo1*
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| 1. School of Information and Control Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, China; 2. Project Department, China Petroleum Engineering & Construction Company Ltd., Beijing 100010, China |
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Abstract In automotive phosphating processes, to address the abnormal crystallization caused by temperature gradients during the heating phase of phosphating solution, a temperature difference-PID coordinated control program was developed. This program integrates segmented temperature compensation and dynamic parameter adjustment to achieve precise thermal regulation. Application tests demonstrated that the optimized control system significantly reduced temperature fluctuations and effectively inhibited crystallization risks.
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Published: 21 December 2025
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