Metal spraying method - JTST historical patent No.29

摘要

This invention relates to a method and apparatus for spraying molten metal to improve the character of the metal deposit made by such a process. For the application of molten metal sprays several devices have been developed and used which involve the feeding of a wire of the metal to he deposited through the "gun" and bringing to a focus on the wire at a melting zone streams of fuel gas, usually acetylene and oxygen adequate to melt the metal, together with a carrier stream of air at higher pressure to form a spray of the molten metal which may be projected against the body to be coated. Such devices are capable of melting and spraying steel, copper, bronzes, brasses, aluminum, zinc, lead, tin, cadmium, and other metals. One of such devices is disclosed in U. S. Patent 1,776,632, and is currently sold under the name of the Metal Spray Company of Los Angeles.