公开(公告)号：US20240191388A1

公开(公告)日：2024-06-13

申请号：US18531721

申请日：2023-12-07

申请人： NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： CHUN-HSIANG KAO ,  YI-CHERNG FERNG ,  YING-SUN HUANG ,  KUO-KUANG JEN ,  SHUN-YI JIAN ,  CHIA-YU LEE ,  JUNG-CHOU HUNG ,  PO-JEN YANG

IPC分类号： C25F3/22 ,  B01J19/10 ,  B24C1/08

CPC分类号： C25F3/22 ,  B01J19/10 ,  B24C1/08

摘要： An electrolytic polishing treatment method for a nickel-based alloy workpiece made by lamination manufacturing comprises the following steps. Step (A) comprises performing a sandblasting treatment on the nickel-based alloy workpiece, followed by ultrasonic oscillation of the sandblasted nickel-based alloy workpiece in an oxalic acid solution. Step (B) comprises placing the nickel-based alloy workpiece in an electrolyte solution containing methanol, sulfuric acid, and perchloric acid and performing electrolytic polishing on the nickel-based alloy workpiece at a constant voltage after step (A). The processes of oxalic acid activation and electrolytic polishing are used to avoid the problems of residual stress and processing directionality caused by conventional mechanical processing and make the surface properties of the entire workpiece uniform.

公开(公告)号：US20220205128A1

公开(公告)日：2022-06-30

申请号：US17562032

申请日：2021-12-27

申请人： NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： CHUN-HSIANG KAO ,  YI-CHERNG FERNG ,  KUO-KUANG JEN ,  SHUN-YI JIAN ,  MING-HSIEN LIN ,  YU-CHIH TZENG ,  CHIA-YU LEE

IPC分类号： C25F3/24

摘要： Provides an electropolishing treatment method for a stainless steel workpiece, wherein the method comprises the following steps: placing the stainless steel workpiece in an oxalic acid solution and performing supersonic oscillation; performing a first electropolishing treatment to the stainless steel workpiece, wherein the first electropolishing treatment uses the stainless steel workpiece as an anode and 10% to 15% perchloric acid as an electrolyte, and when a constant voltage is set as 12V, the first electropolishing treatment procedure is performed; and performing a second electropolishing treatment to the stainless steel workpiece, wherein the second electropolishing treatment uses the stainless steel workpiece after the first electropolishing treatment as an anode, and an electrolyte consists of ethanol, sulfuric acid and perchloric acid, and when a constant voltage is set as 12V, the second electropolishing treatment is performed to obtain the stainless steel workpiece after the second electropolishing treatment.