ELECTRODE COATING APPARATUS AND METHOD

摘要

A method and apparatus for the processing of surface coating is disclosed concerning the design of an ultrasonic pressurized rotating friction head assembly used to apply a surface coating to a workpiece. The shape of the friction head may be flat or curved as appropriate for the workpiece. The surface coating is rotated under repetaed contact and ultrasonic vibration. The apparatus includes: a work station for the mounting and rotation of a TiC coated welding electrode workpiece; a rotating friction head assembly with an ultrasonic transducer and power source. Concurrent application of pressurized rotating friction and ultrasonic vibration, may tend to reduce the defects in the TiC coatings on welding electrodes produced using the electro-spark deposition process. While maintaining the basic coating material component contents, mechanical and physical properties unaltered, defects such as delaminations, cracks, discontinuities and voids may be reduced. Control and operation of the may be adapted to other applications.