Recently, the Shenyang Institute of Automation, Chinese Academy of Sciences, has successfully overcome the technical difficulties in repairing complex thin-walled aluminium alloy parts by laser augmentation. It has completed two batches of repairing nearly 10 parts with high efficiency and high performance for an aviation enterprise.

Aiming at the technical problem that the spare parts of an aircraft in our country are short of repairable after the damage of the aluminium alloy parts, the high-efficiency repairs of the aluminium alloy parts are realized by using laser material-adding repairing technology. The comprehensive mechanical properties of the repaired parts can exceed the level of the original parts. This technology improves the emergency maintenance level and spare parts accompanying support capability of a certain type of aircraft in China, and realizes reliability and life extension.

Aiming at the problems of melting collapse in formed area, strip defect between layers and non-compact defect in the process of repairing aluminium alloy with laser augmentation, key technologies such as laser energy allocation, efficient powder transportation and capture, temperature and shape control of molten pool, defect and performance control are put forward, and high performance and defect-free in-situ repairing of aluminium alloy structural parts is realized.

After years of technical accumulation and innovation, the Technology Equipment and Intelligent Robot Laboratory of Shenyang Institute of Automation has gradually formed a four-in-one technical system of high-end equipment, digital software, core technology and process detection in the high-performance laser material-adding manufacturing and high-efficiency repair technology. Facing the difficult problems of integrated manufacturing of high performance complex parts in aerospace, nuclear power, weapons and other fields, we provide a complete set of technical solutions to help the transformation, upgrading and rapid development of related fields.