Development of plasma generator for applying barrier coating on casting mould face

The results of development and production of a plasma generator for spraying various carbides and oxides onto casting moulds using an air plasma jet are presented. Samples of coatings on casting moulds are obtained using a robotic complex with a plasma generator installed on it. The content of the main elements on the surface of the coatings intended to reduce the thickness of the high-hardness layer on titanium castings is determined. The modes of coating spraying are established using air as a plasma-forming gas. The technical characteristics of the plasma spraying unit are presented.