New Progress of Laser Additive Repair Technology for Complex Thin-Wall Aluminum Alloy Parts of Shenyang Automation Institute

Recently, the Shenyang Institute of Automation, Chinese Academy of Sciences successfully overcome the technical problems of laser additive repair of complex aluminum alloy thin-walled parts, and completed an efficient and high-performance repair of nearly 10 parts in 2 batches for an aviation company.

This technology is aimed at the technical problem of the lack of repairable spare parts after the aluminum alloy parts of a certain type of aircraft in China are damaged. The laser additive repair technology is used to achieve efficient repair of aluminum alloy parts. The comprehensive mechanical properties after repair can exceed the original level. This technology improves the emergency maintenance level and spare parts accompanying support capability of a certain type of aircraft in China, and achieves reliability and longevity.

Aiming at the problems such as the collapse of the formed area, the strip-shaped defects between the layers, and the internal non-dense defects during the laser additive repair process of the aluminum alloy, the laser energy deployment and efficient powder conveying and capturing, molten pool temperature and shape control, defects and performance Key technologies such as regulation and control have achieved high-performance, defect-free integrated in-situ repair of aluminum alloy structural parts.

After years of technological accumulation and innovation, the process equipment and intelligent robot laboratory of Shenyang Automation Institute has gradually formed a four-in-one technology of high-end equipment, digital software, core technology and process detection in high-performance laser additive manufacturing and efficient repair technology. system. Facing the problem of integrated manufacturing of high-performance and complex parts in aerospace, nuclear power, weapons and other fields, it provides a full set of technical solutions to help the transformation and upgrade and rapid development of related fields. (Laboratory of Process Equipment and Intelligent Robot)