Brazing wire, forming method of brazing wire and forming mold of brazing wire

US11845146B2 · kind B2 · utility

Assignee

• ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD. · CN

Inventors

• Sujuan ZHONG · Baofeng County, CN
• Weimin Long · Zhengzhou, CN
• Yinyin Pei · Baofeng County, CN
• Lei Zhang · Shanghai, CN
• Xiupeng Li · 红钢城街道, CN
• Yuanxun Shen · Baofeng County, CN
• Yunyue Li · Baofeng County, CN
• Luyi Wang · Qingdao, CN

Key dates

• Filing date: Aug 26, 2021
• Grant date: Dec 19, 2023
• Expiry date: Aug 26, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K35/40
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A brazing wire includes a brazing tube having an inner cavity and a flux filled in the inner cavity. A trench is provided on an outer peripheral surface of the brazing tube, and the trench extends along an axis of the brazing tube or spirally extends around the axis. A forming mold of the brazing wire includes a mold body having a molding cavity therein. An inner wall of the molding cavity is provided with a protrusion. When the brazing wire passes through the forming mold, the protrusion is used to form the trench. The forming method of the brazing wire includes the following steps. The brazing tube passes through the forming mold, and the trench is formed on the outer peripheral surface of the brazing tube by the protrusion. The trench extends along the axis of the brazing tube or spirally extends around the axis.