Patent ID: 6091043
Filing Date: 2000-07-18
Classification: B05B,B23K,C23C

Abstract:
A method of spraying metal upon an article, the method comprising:providing an article to be sprayed;providing a supply of fusible metal feedstock;providing a metal feedstock feeding device;providing a substrate of conductive heat resistant material, the substrate having a centrally disposed orifice extending therethrough;providing a source of electrical current, the source of electrical current having a first electrode electrically coupled with an end of the metal feedstock, and a second electrode electrically coupled with the plate of conductive material;activating the source of current to establish an electric arc between the metal feedstock and the plate of conductive material, the electrical arc creating a droplet spray of metal from the metal feedstock, the droplet spray being directed through the orifice in the substrate towards the article;the power supply being periodically pulsed between a first current and a second current.