Breakthrough in Friction Stir Welding Technology, Empowering High-end Manufacturing

Dongguan Zhihui Welding Technology Co., Ltd. (hereinafter referred to as "Zhihui Welding") is accelerating the transformation and upgrading of high-end manufacturing fields such as new energy vehicles and aerospace with its innovation in friction stir welding (FSW) technology. The company is based on FSW technology and has achieved dual breakthroughs in welding technology and equipment performance through independent research and development and industry-university-research cooperation.

Zhihui Welding has overcome the difficulty of welding high-melting-point materials. Its "composite heat source collaborative welding process" will increase welding efficiency by 40%, reduce energy consumption by 30%, and achieve weld strength of more than 92% of the parent material. The core of the technology lies in the solid-state welding mode, which avoids the defects of traditional fusion welding and significantly reduces the impact of heat input on material properties. At present, this technology has been applied to the battery tray production line of a leading car company, and the welding yield has jumped from 82% to 98%, and the unit cost has been reduced by 15%.

Relying on the resources of CFSW center, the company has established a laboratory in conjunction with South China University of Technology and other universities, focusing on microstructure regulation and digital twin welding technology, shortening the R&D cycle by 40%. The group standard "Technical Conditions for Stir Friction Welding Equipment" led by it fills the gap in the industry. It has obtained 9 patents and 1 software copyright, and its technical barriers continue to strengthen.

In the benchmark project, Zhihui Welding customized a lightweight welding solution for an international automaker, helping to reduce the weight of the whole vehicle by 12%; it provided technical support for the welding of skin panels of domestic large aircraft, and the fatigue life of welds increased by 30%. Its "one-stop service" model covers process verification, quality monitoring and long-term technical support, and has served more than 200 well-known domestic and foreign companies.

Zhihui welding technology is widely recognized for its environmental protection and economy. The welding process has zero welding material consumption, no smoke and dust emissions, and a single piece of energy consumption is reduced by 70%, which is in line with the "dual carbon" goal. In the future, the company will expand its application in emerging fields such as nuclear energy and deep-sea equipment, and promote China's high-end welding technology to the world.