橡皮电缆硫化管道的腐蚀研究及材质的选择

Analysis of the Corrosion Principle of Rubber Cable Vulcanization Pipe and the Material Selection

氯化聚乙烯(CPE)由于其优良的经济性和机械性能被广泛运用在电缆行业,然而其在硫化过程中会释放出氯化氢气体(HCl),该气体溶于管道内的循环冷却水时会对常用的304不锈钢材质的硫化管道造成腐蚀直至穿孔,使得管道内的高压蒸汽从穿孔点喷出,不仅造成较大的经济损失,同时带来极大的安全隐患。本研究分析了硫化管道的腐蚀过程,采用失重法探究了304、 310S、 430、 904L、 2205等5种常用的不锈钢在盐酸中的腐蚀情况,结果表明:上述5种不锈钢的耐腐蚀性能从高到低依次为904L、 2205、310S、 304、 430,综合材质成本及耐腐蚀性能,建议采用904L或2205作为硫化管道的材质。

Chlorinated polyethylene （CPE） is widely used in the cable industry because of its excellent economic and mechanical properties. However, it releases hydrogen chloride gas （HC1） during the vulcanization process. When the gas dissolves in the circulating cooling water in the pipeline, it will corrode and perforate the vulcanized pipeline made of 304 stainless steel, which makes the high pressure steam inside pipeline ejected from perforation point, which not only causes greate economic losses to the manufacturer but also bring great security risks. In this paper, the corrosion process of sulphide pipeline was analyzed. The corrosion of 304, 310S, 430, 904L, 2205 stainless steels in hydrochloric acid was investigated by weight loss method. The results showed that the corrosion resistance of the above five stainless steels was 904L, 2205, 310S, 304, 430 in descending order from high to low. It is recommended that 904L or 2205 be used as the material of the vulcanizing pipe.