Method for thermal coating surface of cylinder bore formed in cylinder block of internal combustion engine, involves dividing flow of secondary gas such that portion of secondary gas transports melted particles to to-be coated surface

摘要

The method involves introducing a primary gas and a secondary gas into a thermal coating device. The melting particles on an anode of thermal coating device are transported to a surface to-be coated through a jet spray. A positive pressure is generated around the thermal coating device and a reducing atmosphere is generated in the jet spray. The flow of secondary gas is divided such that a portion of secondary gas transports the melted particles to the surface to-be coated and other portion partially forms the excess pressure.