不锈钢金相组织对微细电解加工的影响及其与电解液成分匹配关系研究  

The Influence of Stainless Steel Metallographic Structure on Micro Electrochemical Machining and Its Matching Relationship with Electrolyte Composition

作　　者：祝玉兰[1] 刘国栋[1] 李勇[1] 佟浩[1] ZHU Yulan;LIU Guodong;LI Yong;TONG Hao(Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学机械工程系,精密超精密制造装备及控制北京市重点实验室,北京100084

出　　处：《电加工与模具》2022年第2期37-41,共5页Electromachining & Mould

基　　金：国家自然科学基金面上项目(51775302)。

摘　　要：为探索不锈钢金相组织对微细电解加工的影响规律及与电解液成分的匹配关系,在NaClO_(3)、NaNO_(3)及其混合电解液中,分别对4种不同的金相组织不锈钢开展试验研究。结果表明:不同金相组织不锈钢的材料蚀除速率在以NO_(3)^(-)为主要阴离子和以ClO_(3)为主要阴离子的电解液中呈现截然相反的趋势。铁素体不锈钢和奥氏体不锈钢分别在NaNO_(3)电解液和NaClO_(3)电解液中展现出较高的材料蚀除速率和较好的加工表面质量,而马氏体不锈钢在NaClO_(3)电解液中的加工表面质量较好,在NaNO_(3)电解液中的材料蚀除速率更高。In order to explore the influence of stainless steel metallographic structure on micro electrochemical machining(ECM) and its matching relationship with electrolyte composition,the micro ECM experiments in NaClO_(3),NaNO_(3) and their mixed electrolyte for four types of metallographic structure stainless steel has been carried out. The result showed that the material removal rates of stainless steel with different metallographic structure show an opposite trend in the electrolyte with NO_(3)^(-) and ClO_(3) as the main anion. Ferritic stainless steel and austenitic stainless steel show higher material removal rate and better machining surface quality in NaNO_(3) electrolyte and NaClO_(3) electrolyte,respectively. Meanwhile,martensitic stainless steel has better machining surface quality in NaClO_(3) electrolyte and higher material removal rate in NaNO_(3) electrolyte.

关 键 词：微细电解加工 金相组织 匹配关系 

分 类 号：TG662[金属学及工艺—金属切削加工及机床]