燃气热水器铜质换热器防腐工艺研究

刘兵, 向雄志, 刘家荣, 杨启欣

doi:10.16577/j.issn.1001-1560.2025.0090

材料保护 >

2025 , Vol. 58 >Issue 5: 179 - 183

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0090

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燃气热水器铜质换热器防腐工艺研究

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1.广东万家乐燃气具有限公司 2.深圳大学材料学院广东省新能源材料服役安全重点实验室

向雄志(1980－)，副教授，博士，贵金属材料及材料腐蚀与防护相关研究，E-mail: xiyun＿cn＠szu.edu.cn

收稿日期: 2024-10-22

修回日期: 2025-01-07

录用日期: 2025-01-10

网络出版日期: 2025-06-10

基金资助

国家自然科学基金(22075185)

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Study on Anti-Corrosion Technology for Copper Heat Exchangers in Gas Water Heaters

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(1.Guangdong Wan Jiale Gas Appliance Co.， Ltd.， Foshan 528333， China； 2.Guangdong Provincial Key Laboratory of New Energy Materials Service Safety， College of Materials Science and Engineering， Shenzhen University， Shenzhen 518060， China)

XIANG Xiongzhi(1980－)，Associate Professor，Doctorate，Research Focus:Precious Metal Materials and Corrosion and Protection of Materials，E-mail: xiyun＿cn＠szu.edu.cn

Received date: 2024-10-22

Revised date: 2025-01-07

Accepted date: 2025-01-10

Online published: 2025-06-10

Supported by

National Natural Science Foundation of China (22075185)

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摘要

铜作为换热器的主要材料，在燃气热水器中应用广泛。然而，近年来，部分地区的铜管腐蚀漏水问题已成为行业难点。就铜质换热器的穿孔腐蚀问题，依据水质分析以及失效分析，分别从管道材料处理、水质处理两方面入手，提出管内壁镀镍、FOF(Filming Organic Formula)物理阻垢2 种缓蚀方案。通过电化学试验、耐久性验证论证了方案的可行性。最后，针对以上2 套方案批量制作了样品在山西、山东等地定向试用并定期追踪，结果显示，镀镍方案可在一定程度上减缓热交换器腐蚀，寿命可延长60%～200%；FOF 物理阻垢整体可延长换热器使用寿命60%～200%以上。

关键词： 燃气热水器; 铜; 换热器; 镀镍; 物理阻垢

本文引用格式

刘兵, 向雄志, 刘家荣, 杨启欣 . 燃气热水器铜质换热器防腐工艺研究[J]. 材料保护, 2025 , 58(5) : 179 -183 . DOI: 10.16577/j.issn.1001-1560.2025.0090

Abstract

As the main material of heat exchangers， copper is widely used in gas water heaters.However， the corrosion and water leakage of copper pipes have also become a key challenge in the industry.To address the perforation corrosion of copper heat exchangers， based on waterquality and failure analyses， two strategies for inhibiting pitting corrosion were proposed from two aspects of pipeline material treatment and water quality treatment， namely the nickel plating of the inner pipe wall and the application of filming organic formula (FOF) agents for physical scale inhibition.The feasibility of these strategies was validated through electrochemical tests and durability assessments.Subsequently， specimens treated with each strategy were mass-produced and were subjected to targeted field trials in regions such as Shanxi and Shandong， during which their performance was monitored periodically.Results showed that corrosion of the heat exchangers was moderately reduced by nickel plating， and their service life was extended by 60%to 200%.In addition， the application of FOF agents was shown to prolong service life by more than 60%to 200%.

Key words： gas water heater; copper; heat exchanger; nickel plating; physical scale inhibition

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