What is flame wire spray?
This is a useful process for applying relatively inexpensive coatings that typically contain high levels of oxides and porosity together with the option of achieving a rough surface finish. The process relies on the chemical reaction between oxygen and a fuel of combustion to produce a heat source. This heat source creates a gas stream with a temperature in excess of 3,000째C with correctly balanced conditions between oxygen and acetylene.
The feed stock material to be sprayed is fed into the flame in the form of a wire and compressed air is then used to atomize the molten metal and accelerate the particles onto the substrate.
Among others, the process is typically used for applying bond coat materials or materials for corrosion resistance applications.