LFC coating paints

The performances of LFC coating are mainly thermal performance and air permeability, which determine its role in the casting process.In practice, it is necessary to measure and control its viscosity, solid content, air permeability, PH value and so on.The quality of epc products can be guaranteed only when the performance of the coating is stable and consistent.

Ruiou, as a leading Lost Foam Coating Plant in China, offers customizable coatings to meet your specific casting parameters. We bring the proper coating directly to your site and provide services including stirring, brushing, drying, and pouring. Our experts adjust the coating formula slightly according to the site situation to ensure optimal performance. We continuously research and develop the appropriate coating for your product until you can produce qualified castings.

Process Position

• Typical process flow:

• Pattern assembly (foam clusters) → Coating (dipping or flow coating) → Drying → Sand filling & vibration → Pouring → Shakeout & finishing.

• As the interface between the foam and the sand, the coating controls gas evacuation, heat transfer and metal penetration resistance. That is why we also focus on coating application methods and drying conditions (temperature, time, air flow) to ensure stable performance in your line

  
  

 Why Coating Performance Matters to Purchasing & Quality

• Key performance indicators to monitor and control:

• Viscosity – affects coating thickness and pick‑up; industry practice is to adjust and stabilize viscosity for consistent film thickness.

• Solid content – influences density, strength and permeability after drying; higher solid content often improves refractoriness but may increase gas evolution if not balanced.

• Gas permeability – critical to allow pyrolysis gases to escape; too low leads to backpressure and defects, too high may cause mold collapse and penetration.

• pH – important for stability and compatibility with foam and binder; out‑of‑range pH can affect suspension and storage life.

• Refractoriness & strength – determines resistance to sand burn, metal penetration and erosion during pouring.

• Our R&D and lab work revolve around keeping these parameters within tight ranges for each alloy family (gray/ductile iron, carbon & low‑alloy steel, high‑temperature steel, high‑Cr iron, manganese steel, aluminum, copper, etc.).

Product Range

• LFC Coating

• General‑purpose LFC coating with controllable viscosity, solid content and permeability; suitable for common iron and steel castings where stable coating properties are required.

• Lost Foam Customized Special Coating

• Tailored formulations for specific alloys or applications; advantages include low cost, good permeability, high strength, good brushing/suspension, suitable refractoriness and strong anti‑sand sticking performance.

• Dry Power Water Paints

• Water‑based powder coatings developed from >600 production cases; suitable for gray iron, high‑Cr iron, copper, aluminum, manganese steel, ordinary steel and high‑temperature steel. Benefits: thin coating, low cost, high strength, high refractoriness, good suspension, easy to peel off and clean.