316L奥氏体不锈钢永久阴极板的微观组织分析  

Microstructure Analysis of 316L Austenitic Stainless Steel for Permanent Cathode Plate

作　　者：宋仁金 周晓玲[1] 罗劲松 相元杰 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]云南铜业集团有限公司,云南昆明650011

出　　处：《热加工工艺》2017年第10期112-116,共5页Hot Working Technology

基　　金：云南铜业1~#传统阴极机组自动化改造项目(JSBH01-0036)

摘　　要：不锈钢阴极板的平直性差直接影响电解铜的质量。从材料学的角度,采用金相、FESEM、EDS和XRD研究了极板的硬度、晶粒度、微观组织特征和残余应力等。结果表明,引起316L不锈钢阴极板变形的有:316L不锈钢的预变形度不足,造成不均匀的再结晶奥氏体组织;从极板剥离电解铜的机械过程中极板各位置受力不均匀;以及极板表面残余应力分布的不均匀,且这些影响因素间存在一定的关联性。提出了解决变形的措施,这些措施可有效提高316L不锈钢阴极板的平整度及耐腐蚀性。The bad flatness of austenitic stainless steel cathode plate （ASSCP） directly affects the quality of electrolytic copper. The hardness, grain size, microstructure characteristics and residual stress of the samples were analyzed by OM, FESEM, EDS and XRD techniques. The results show that the deformation of 316L ASSCP may be caused by insufficient predeformation degree which can cause nonuniform recrystallized austenite microstructure, the uneven force exerted on the plate surface during the mechanical process of separating electrolytic copper from the cathode plate and the uneven residual stress distribution on the cathode plate surface. There are certain correlation among these factors. The measures for solving the deformation are put forward, and the measures can effectively improve the flatness and corrosion resistance of 316L ASSCP.

关 键 词：不锈钢 电解铜 永久阴极板 晶粒度 显微组织 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG142.71[金属学及工艺—金属材料]