Laser cladding technology uses a high-energy-density laser as a heat source to clad a layer of cladding material on the surface of the substrate to achieve metallurgical bonding with the substrate and form an alloy on the surface of the substrate that has completely different composition and properties from the substrate. Layer surface modification method. This technology integrates rapid prototyping technology and laser cladding surface modification technology, and can realize the repair of three-dimensional metal parts without tools and molds. In the field of aviation, the price of spare parts for aero-engines is very high, so it is more cost-effective to repair parts in many cases, but the quality of repaired parts must meet safety requirements. For example, when damage occurs on the surface of an aircraft propeller blade, it must be repaired by several surface treatment techniques. In addition to considering the high strength and high fatigue resistance required by propeller blades, the corrosion resistance after surface repair must also be considered. Laser cladding technology can be well applied to this. In addition, laser cladding technology can also be applied to the repair of turbine blades, shell joint parts, valve body parts and other parts.
Laser additive remanufacturing of aero-engine blades
The wear-resistant spare parts of aviation titanium alloy equipment, after laser cladding, the wear of the spare parts is only 4.2% of the original parts, and there is no wear until the grinding steel wire rope is worn off.