The spraying of coating by supersonic metalization
- Academy of Sciences of Ukraine, Kiev (Ukraine). Gas Inst.
A technology and a specialized equipment complex based on a supersonic arc spraying gun, where a supersonic stream of combustion products of hydrocarbon-gas (HC-gas) with air is used as an atomizing gas, have been developed. Durable and safe work of coated parts functioning under conditions of intensive loading is determined (except general requirements to coatings: wear resistance, hardness, adhesion) to a large extent by the fatigue strength and the stability of the properties of coatings. New possibilities for satisfying all the requirements to coatings on parts type are opened up by a high speed spraying of wire. This is provided at the expanse of raising the kinetic energy of particles under spray, increase of their concentration in a metal stream, lowering of the spread of parameters (velocity, temperature, sizes) in the vicinity of a substrate. This, in its turn, determines the increase of adhesive and cohesive strength of a coating, the decrease of oxidizability, the improvement of stability and reproducibility of its properties. The results of the investigations of the influence of the variable parameters of the process on the listed above properties of coatings are presented. A procedure of computer evaluation of the degree of the reproducibility of structural peculiarities of sprayed coatings is worked out. An industrial installation and examples of its use for the strengthening of automobile parts are described.
- OSTI ID:
- 160459
- Report Number(s):
- CONF-940684-; ISBN 0-87170-509-5; TRN: IM9603%%41
- Resource Relation:
- Conference: 1994 national thermal spray conference, Boston, MA (United States), 20-24 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of 1994 Thermal spray industrial applications: Proceedings; Berndt, C.C.; Sampath, S. [eds.] [State Univ. of New York, Stony Brook, NY (United States). Dept. of Materials Science and Engineering]; PB: 816 p.
- Country of Publication:
- United States
- Language:
- English
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