Casting Process

Complete overview of our investment casting (lost-wax) production process.

Matson Foundry

Wax Pattern Production

Our wax injection facility produces precise wax patterns using aluminum tooling. We use semi-automatic wax injection machines with temperature and pressure control to ensure dimensional consistency. Pattern assembly (tree building) is performed by skilled operators following standardized procedures.

  • Wax injection temperature: 58-65°C
  • Injection pressure: 3-12 bar
  • Pattern accuracy: ±0.05 mm
  • Automatic wax recycling system
  • Pattern storage in climate-controlled room
Matson Foundry

Ceramic Shell Building

The ceramic shell is built by alternating dipping in ceramic slurry and stuccoing with refractory sand. We apply 6-8 layers to create a shell strong enough to withstand metal pouring. Controlled drying between layers is critical for shell integrity.

  • Primary coat: zircon flour + colloidal silica
  • Backup coats: mullite/alumina sand
  • 6-8 coating layers total
  • Controlled humidity drying (50-60% RH)
  • Shell thickness: 6-10 mm
Matson Foundry

Metal Pouring & Finishing

After dewaxing in our autoclave, shells are preheated to 1000-1100°C and filled with molten alloy. We use induction furnaces with argon protection for reactive alloys. Post-casting operations include knockout, cut-off, grinding, and heat treatment.

  • Induction melting: 250 kg and 500 kg furnaces
  • Pouring temperature monitoring with pyrometer
  • AOD refining for stainless and duplex
  • Heat treatment: solution, aging, normalizing, Q&T
  • Shot blasting and surface grinding
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Start Your Casting Project

Send drawings or specifications — our engineering team responds within 24 hours with a detailed quote.