Purpose. For implementation at enterprises of the aviation, defense and mechanical engineering industries in order to increase the service life of parts and equipment operating in conditions of friction without lubrication at elevated temperatures, as well as repair and restoration of the geometric dimensions of worn parts for their reuse.
Specifications. Plasma spraying technology: – plasma spraying of coatings from composite powders (Ti, Cr)C is carried out in an open atmosphere on a UPU-3D installation; – mains voltage –380 V; – power consumption – 70 kW; – arc current – 480 A; – operating arc voltage – 60 V; – consumption of plasma-forming gases (argon, hydrogen) – 40 and 15 l/min; – consumption of transport gas (argon) – 3-5 l/min; – spraying distance – 150 mm;
Application area. Aviation, mechanical engineering, energy, chemical, woodworking, printing, metallurgical enterprises. It is advisable to use it in the automotive and aircraft industries, in particular in engine construction, in the manufacture of gas turbine engines and internal combustion engines.
Advantages. The thermal spray technology has a number of advantages over existing technologies for coating and restoring parts, such as chemical, galvanic, welding and surfacing. Allows coating thickness from 0.05 to 3 mm. Features high performance. Allows the application of coatings from various materials, including those with a melting point of more than 2000°C: metals, alloys, oxides and composite materials. When spraying, the part has a temperature of no more than 150-200°C, which eliminates the violation of the geometry of parts with complex shapes (behavior), and allows coating to be applied to manufactured parts made of various materials (aluminum, copper, iron and their alloys). No toxic waste.
Technical and economic effect. The technical and economic effect of updating one product using plasma spraying is up to 90% of the cost of this product, since restoration costs are 10–50%, depending on the cost of the new product. The repeated use of remanufactured parts reduces the consumption of high-alloy steels and alloys. Applying wear-resistant and heat-resistant coatings to working surfaces increases the service life of the product by 30-50%, which reduces the cost of manufacturing spare parts. The service life between repairs increases and the costs of repairing equipment as a whole are reduced.
Description. A technology has been developed for applying wear-resistant coatings from a clad-type composite material based on double titanium-chromium carbide (TiCrC)-Ni by plasma method on parts of aviation and ground equipment, which makes it possible to increase the reliability, service life, operating temperature of parts and assemblies and reduce the cost of repairs and production of new ones spare parts