REPAIR OF ENGINE RADIATOR BY MEANS OF COLD GAS SPRAYING

The article is devoted to the performance restoration technology development of the aluminum radiator of tractor ?John Deer 7830?. The distinctive feature of the suggested technology is cold gas spraying application, which provides air tightness restoration of the radiator made of thin‐walled aluminum parts and having complicated form that causes troubles to technological operation fulfilment. The carried out experimental investigations resulted in determining rational technological parameters of gas dynamic spraying: nozzle angle of the facility and the distance from the nozzle exit to the spraying surface,providing optimal mechanical characteristics of the repair coating.