Device for applying coating on surface of workpiece, comprises plasma generator for producing plasma in a plasma chamber, arrangement for producing gas flow through plasma chamber, and device for supplying and inserting coating material

摘要

The device for applying a coating on a surface of workpiece, comprises a plasma generator for producing plasma in a plasma chamber (13), an arrangement for producing gas flow through the plasma chamber, device for supplying and introducing a coating material into the gas flow downstream of the plasma chamber, and a nozzle for directing the coating material on the surface. The plasma chamber flows into a plasma channel (14). The device and the workpiece are arranged in a vacuum coating chamber (1). The plasma exists in an arc between a cathode (5) and an anode (6). The device for applying a coating on a surface of workpiece, comprises a plasma generator for producing plasma in a plasma chamber (13), an arrangement for producing gas flow through the plasma chamber, device for supplying and introducing a coating material into the gas flow downstream of the plasma chamber, and a nozzle for directing the coating material on the surface. The plasma chamber flows into a plasma channel (14). The device and the workpiece are arranged in a vacuum coating chamber (1). The plasma exists in an arc between a cathode (5) and an anode (6). The device contains a supply channel for coating material, which flows into the plasma channel. The coating material in the plasma channel exists an evaporating temperature. The plasma channel has a length of 2-10 cm. A supply channel for a reaction material flows into the plasma channel. The nozzle forms a space for an open jet with the coating material in an opening angle of 30-50[deg]. The cross-sectional shape of the nozzle is aligned to the outer shape of the workpiece. A supply channel for an additive flows into the nozzle. The coating material is intermittently supplied to the surface.