| 摘要 |
The present invention relates to a method for applying a layer to a piston ring blank, in particular for a piston ring of the kind that is intended for use in large diesel engines. A coating powder is supplied to one of succeeding portions of the piston ring blank, after which the coating powder is melted with the aid of an energy radiation means at a constant distance from the coating powder which was last supplied to the piston ring blank to form a coating layer on said portion of the piston ring blank. The energy radiation is allowed to act on the coating powder for a period of time which is adjusted so that substantially no heat, besides the heat required for melting the powder material develops. The invention also relates to a device for performing the method. |
