板式换热器用纯钛冷冲压波纹板片的耐腐蚀性能研究  

Study on corrosion resistance of pure titanium cold stamping corrugated sheet for plate heat exchanger

作　　者：史伟 石永祥 杨莉 赵江涛 蒙骞 SHI Wei;SHI Yongxiang;YANG Li;ZHAO Jiangtao;MENG Qian(Lanzhou LS Test Technology Co.,Ltd.,Lanzhou 730314,China;Gansu Engineering Laboratory of Materials Characterization and Safety Evaluation forMachinery Equipment,Lanzhou 730314,China;Gansu Engineering Technology Research Center of High-end Castings and Forgings,Lanzhou 730314,China;Lanzhou LS Heavy Equipment Co.,Ltd.,Lanzhou 730314,China)

机构地区：[1]兰州兰石检测技术有限公司,甘肃兰州730314 [2]甘肃省机械装备材料表征与安全评价工程实验室,甘肃兰州730314 [3]甘肃省高端铸锻件工程技术研究中心,甘肃兰州730314 [4]兰州兰石重型装备股份有限公司,甘肃兰州730314

出　　处：《石油化工腐蚀与防护》2021年第4期12-14,共3页Corrosion & Protection In Petrochemical Industry

基　　金：兰州市重大科技专项(2017-2-20);兰州市科技计划项目(2019-4-48)。

摘　　要：通过金相检验、物相分析、自腐蚀电位测试等手段研究了板式换热器用纯钛冷冲压波纹板片的耐腐蚀性能。研究结果表明,纯钛板在冷冲压后显微组织中没有出现新的析出相,其自腐蚀电位变大,耐腐蚀性能变好。纯钛板耐腐蚀性能提高的主要原因是其表面的钝化膜经冷冲压后变得更为致密,从而提高了其自腐蚀电位。Corrosion resistance of pure titanium cold stamping corrugated sheet for plate heat exchanger was studied by means of metallographic examination,phase analysis and free corrosion potential test.The results showed there was no new precipitate in the microstructure of pure titanium sheet after cold stamping;moreover,the free corrosion potential increased and the corrosion resistance improved.The main reason for the betterment of corrosion resistance of pure titanium sheet was that the passive film on the surface became more compact after cold stamping,which raised the free corrosion potential.

关 键 词：板式换热器 钛板 冷冲压 钝化膜 自腐蚀电位 

分 类 号：TE65[石油与天然气工程—油气加工工程] TQ051.5[化学工程] TG146.23[一般工业技术—材料科学与工程]