Method for producing high quality polished surfaces uses a laser pre-treatment to melt a set surface depth to remove pores

摘要

A method for producing a high quality surface finish, e.g. on metals, has a laser pre-treatment to remove pores and inclusions and leaving a surface suitable for conventional mechanical or electrochemical polishing. The laser treatment melts the material to a depth of = 100 microns using continuous pulse or pulse duration of >= 100 micro seconds. The process is especially suited to metal injection mouldings or fine castings.