The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2022
Filed:
Dec. 27, 2021
National Chung Shan Institute of Science and Technology, Taoyuan, TW;
Chun-Hsiang Kao, Taoyuan, TW;
Yi-Cherng Ferng, Taoyuan, TW;
Kuo-Kuang Jen, Taoyuan, TW;
Shun-Yi Jian, Taoyuan, TW;
Ming-Hsien Lin, Taoyuan, TW;
Yu-Chih Tzeng, Taoyuan, TW;
Chia-Yu Lee, Taoyuan, TW;
NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY, Taoyuan, TW;
Abstract
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.