Tonkawa Foundry Process

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Molding

Process

Local pattern making is available on a limited basis. Core production is done by automatic and manual coreblowers, hand molding, no bake and cold box.

• Cope and drag—14” x 14.5” x 5/5
• Stack molding—13.5” x 15” up to 16” x 24” in 1.5” to 3” mold
thickness
• No Bake – Various sizes – up to 48” x 48”
• Cold box
• Mold handling equipment
• Phenolic urethane cold box molding and cores for dimensional
accuracy

Melting Process

Tonkawa Foundry uses all new materials such as American pig iron, #1 copper, new nickel, chrome, etc. to ensure the quality of the product.

• 1200 kW Inductotherm Power Units
• (2) 2000 pound furnaces
• Thermocouple controlled temperature
• Integrated furnace and pouring station
• Charging accurately managed by computerized scales

Shakeout/Sand Reclamation

To ensure quality service to their customers, Tonkawa Foundry installed a Sand Reclamation unit in the Fall of 2004.

• Vibratory breakdown of molds in vibra-drum shakeout unit allows
for efficient, thorough separation of castings and sand.
• Sand is screened, cooled, and treated for re-use.
• Tests are performed daily by the in-house sand lab.

Preparation and Inspection

Tonkawa Foundry performs full inspections on their products to ensure they are the highest quality for their customers

• Initial inspections and cleaning of castings
• Stand and hand grinding
• Shot blasting
• Final inspections