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:
Feb. 18, 2025
Filed:
Aug. 24, 2020
Doosan Enerbility Co., Ltd., Changwon-si, KR;
Pukyong National University Industry-university Cooperation Foundation, Busan, KR;
Yoon Sang Lee, Changwon-si, KR;
Hyun Sang Kong, Changwon-si, KR;
Jae Yun Shin, Changwon-si, KR;
Sang Myung Cho, Busan, KR;
Hyo Jin Baek, Busan, KR;
Chang Ik Lee, Busan, KR;
Hyeong Chang Ryu, Busan, KR;
Kyeong Seob Lim, Busan, KR;
DOOSAN ENERBILITY CO., LTD., Changwon, KR;
PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION, Busan, KR;
Abstract
An apparatus and method for cleaning an oxide film using a direct current reverse polarity are provided. The apparatus for cleaning an oxide film formed on a workpiece may include a power supply configured to apply direct current power and to include a positive electrode terminal and a negative electrode terminal, the workpiece configured to be electrically connected to the negative electrode terminal to act as a negative electrode to which a current is applied, and a torch having a positive electrode, which is spaced apart from the oxide film by a predetermined distance and is electrically connected to the positive electrode terminal, the torch being installed to be movable relative to the workpiece. The oxide film formed on the workpiece may be removed by applying a reverse polarity direct current between the workpiece, serving as the negative electrode, and the positive electrode to generate an arc.