Electric Arc Spray
Electric arc spray is one of the oldest, most effective methods of thermal spray coating processes. Developed in the early 20th century, electric arc spray uses a low power arc as its heat/energy source. This arc results in a spray process that is economically efficient—very low levels of power are required for the process, and very little heat is transferred to the work piece. Electric arc sprays are, capable of spraying at rates up to 40 lbs. per hour and or higher, producing some of the fastest coating rates of any coating method gaining positive economic efficiencies.
ASB Industries' twin wire arc thermal spray equipment uses two wires of a chosen composition, which are brought together in the gun and electrically charged to induce melting. The resulting molten material is then propelled onto the work area. Using electric wire arc spray allows thicker build-up, making it an excellent system to use for dimensional repair. The coatings produced are inherently somewhat porous, which allows lubrication to seep into the pores and can be beneficial for many applications.
We use nitrogen process gas along with cleaner booth environments to reduce oxides developed during processing, reducing contamination and providing a more optimal coating. The use of nitrogen as the process gas also creates a cleaner environment for our thermal spray operators.
Electric arc spray process parameters can be easily adjusted to create various surface profiles. When rough surfaces are needed, coating parameters are adjusted to create a coarse atomization of the melting wires. Unique chemistries can also be created by feeding two different wires. Electric Arc coatings can provide relatively thick coatings to rebuild heavily worn equipment. They can also be and easily machined to print specifications with many times more wear resistance then the original component substrate.
Contact ASB Industries to explore how our electric arc spray services may work for your unique applications.