Foundry Coatings: Essential for Premium Castings
2025-07-11 10:27Composed of refractory aggregates, binders, suspending agents, and additives, these coatings are formulated as pastes with water (water-based) or alcohol (alcohol-based) solvents, diluted by foundries for use.
Critical application processes ensure optimal performance:
Pre-stirring: A pre-stirring tank with dispersing discs prevents component settling, crucial for key automotive castings.
Temperature Control: Heat coatings to 10–20°C in winter (if below 10°C) using external heating elements.
Dipping Process: Follow the "121 principle" (1s entry, 2s immersion, 1s exit) for 0.2–0.3mm dry thickness and 0.8–1.2mm penetration.
Drying: Use manual or robotic drying to avoid uneven coating; adjust parameters for uniform coverage.
Baking: Ensure thorough baking (0.1–0.3% moisture content) to prevent pores and inclusions, with proper furnace ventilation.
In summary, foundry coatings are pivotal for defect-free castings, with precise application processes ensuring their effectiveness.
Get the latest price? We'll respond as soon as possible(within 12 hours)