电铸毛细管芯模选择与去除方法实验研究  

Experimental study on core mold removal method for electroforming capillaries

作　　者：郭晓怡 明平美[1] 杨晓红 杨政 雷振俭 李玉婷 王文凯 Guo Xiaoyi;Ming Pingmei;Yang Xiaohong;Yang Zheng;Lei Zhenjian;Li Yuting;Wang Wenkai(School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454150,China)

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454150

出　　处：《电镀与精饰》2024年第12期79-86,共8页Plating & Finishing

基　　金：国家自然科学基金项目(51875178);河南省科技攻关项目项目(232102221023);河南理工大学2023年度校级重点科研项目(2023-ZRZZ-001)。

摘　　要：电铸技术在制造大长径比、超细高精金属管方面具有独特优势,芯模去除是该技术的关键工序。针对大长径比、超细高精金属管电铸后的芯模去除问题开展研究。实验研究评测了机械拉拔、化学溶解与低熔点合金熔化三种方法的脱模效果。在此基础上,研发出基于软质尼龙丝线芯模的热拉拔脱模法。研究结果表明,基于软质尼龙丝线芯模的热拉拔脱模法可快速脱除芯模,且对管壁损伤小、在管内无残留。基于此法,电铸制备出内径(100±0.5)μm、外径(300±0.5)μm、AR(长径比)约为200、管内壁表面粗糙度Ra为0.364μm的大长径比、高内表面质量毛细金属管。Electroforming technology has unique advantages in manufacturing large aspect ratio,ultrafine and high precision metal tubes,and core mold removal is the key process of this technology.The core mold removal after electroforming of large aspect ratio,ultrafine and high-precision metal tubes was investigated.Through experimental research,the mold removal effects of mechanical drawing method,chemical dissolution method and melting method were evaluated.On this basis,a hot pulling mold removal method based on soft nylon wire core mold was developed.The results show that the hot-drawing demolding method based on a soft nylon wire mandrel can quickly remove the mandrel,and there is little damage to the wall of the tube,no residue in the tube.Based on this method,a capillary metal tube with a large aspect ratio and high internal surface quality with an inner diameter of(100±0.5)μm,an outer diameter of(300±0.5)μm,an AR(length-to-diameter ratio)of about 200,and a surface roughness of the inner wall of the tube of 0.364μm was prepared by electroforming.

关 键 词：电铸成形 毛细管 芯模去除 

分 类 号：TQ153.4[化学工程—电化学工业]