Method for improving smooth running of casting of rare earth stainless steel using pulse current

US12121957B1 · kind B1 · utility

Assignee

• Inner Mongolia University of Science & Technology · CN

Inventors

• Xinfang Zhang · Tianjin, CN
• Mengcheng Zhou · Wukehudong, CN
• Chengbao Liu · Beijing, CN
• Changhao LIU · Beijing, CN
• Zhiyong Chen · Tangxia, CN
• Baoyu Zhang · Beijing, CN
• Xiaoshan Huang · Lo Wu, CN
• Yulong Chen · 甘垛镇, CN
• Zhongxue WANG · Wukehudong, CN
• Heng MA · Beijing, CN
• Yubao LIU · Shanghai, CN
• Dandan Zhang · Shanghai, CN

Key dates

• Filing date: May 31, 2024
• Grant date: Oct 22, 2024
• Expiry date: May 31, 2044

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/115
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for improving smooth running of casting of rare earth stainless steel using pulse current includes the following steps: setting corresponding initial pulse voltage, pulse current, and pulse frequency in accordance with difference of rare earth element content in molten steel; and adjusting the pulse voltage, pulse current, and pulse frequency according to position change of stopper rod until the end of continuous casting. The method can stably improve the clogging of immersion nozzle during continuous casting, the smooth running of continuous casting and production efficiency, and decrease production cost.