Pyrocoat FM-W is graphite-based, non-reflective, energy absorbing coating that is applied to the surface of aluminium prior to melting, typically in a dry hearth furnace. This coating reduces the reflectivity of the aluminium, thereby increasing the absorption of radiant heat into the aluminium. Non-coated aluminium naturally reflects heat from its bright surface, taking longer to melt than aluminium coated with Pyrocoat FM-W. Typical melting rate times have shown melt rates cut in half by coating the aluminium with Pyrocoat FM-W. Decreasing melt time has many advantages, including increased productivity and decreased energy usage.
Pyrocoat FM-W is a black liquid coating that can be applied quickly using either a paintbrush, spray gun or automated sprayer. Application is best if applied to all sides of the material that are exposed to the furnace’s radiant heat. The coating is typically applied to the top and sides of a sow or Tbar.
- Pyrocoat FM-W is water based