Metalizing
Electric Arc Spray
Note: Electric Arc schematic courtesy of Sulzer Metco
This equipment is an innovation to the Metallizing Field. A modified basic Solid State 600 Amp.Arc Welder is combined with a specially designed Spray Gun. Two wires are fed simultaneously through the gun at an angle so as to meet as they exit from the gun. The wires are insulated from each other but at the point where the wires exit from the gun, one wire is charged plus and the other minus, causing them to throw a molten arc between each other. Just behind this point we inject high velocity air or inert gas which atomizes the molten arc and propels the atomized particles onto the Substrate. The temperature of the arc is controllable to a maximum of approximately 10,000°F. With this equipment, we can spray any type of metals which have melting points below 10,000°F.
Depending on the material being applied and the equipment being used, A&A Company, Inc. can apply coatings with either mechanical bonds up to 5000 P-S-I- or Semi-Metallurgical bonds. With all processes, the Substrate is not heated above (250°F), therefore no distortion takes place.
Combustion Wire Spray
Note: Combustion Wire schematic courtesy of Sulzer Metco
With this process, a specially designed gun is used, having a nozzle (similar to a welder’s heating torch) which burns Oxygen and Acetylene achieving temperatures up to 5500°F. A wire is fed through the center of the nozzle into the flame where it is melted. Compressed air is concentrated around the flame atomizing the molten material into fine spherical particles and propelling these particles at high velocity onto a specially prepared Substrate. By controlling the rate of feed of the wire through the flame, we can control the melt and atomization of metals with various melting points. With this gun, any wire may be sprayed which has a melting point below 5500°F.
Combustion Powder Spray
Note: Combustion Powder schematic courtesy of Sulzer Metco
In this process, the basic principle of the heat source is the same as for wire spray except that powders are fed through the flame and propelled by high velocity Oxygen or air onto a Substrate. As with Metallizing, any powdered metal or ceramic having a melting point below 5500°F. can be sprayed. This gun is mainly used for Hard Surfacing as described in the Spray and Fuse Hardfacing section located under the Coating Services tab of this Website.
Please do not hesitate to Contact Us for custom solutions or more information.
