Coating device and method for metal-coating of workpieces

A coating device for metal-coating of workpieces (5), comprising

• a housing (21), which surrounds a working space (23),
• a retaining apparatus (44) for retaining at least one workpiece (5) in the working space (23),
• two deposition apparatuses (25), each comprising a deposition nozzle (26) for applying a metal powder to a workpiece surface (6) to be coated, and a laser for locally melting the metal powder on the workpiece surface (6) to form a coating, and
• at least one movement apparatus (29) for moving the two deposition apparatuses relative to the workpiece surface (6) during the coating,
• wherein the two deposition apparatuses (25) are arranged in the working space (23) of the housing (21), the two deposition apparatuses being designed to simultaneously apply and melt the metal powder,
• wherein the two deposition apparatuses (25) are located opposite each other offset by 180 degrees about a center axis of the at least one workpiece (5) such that the nozzles (26) of the two deposition apparatuses (25) face each other for coating the at least one workpiece (5) on two disc-shaped or planar opposite workpiece surfaces (6),
• wherein the at least one workpiece (5) is rotatably mounted on the retaining apparatus (44),
• wherein each deposition apparatus (25) is movable relative to the workpiece surface (6) by the at least one movement apparatus (29) during coating, and
• wherein the at least one movement apparatus (29) is disposed in part on the retaining apparatus (44) and has a motor for moving the at least one workpiece (5) during coating.