Keboer Resin Sand Process
High-quality cast iron casting for Large Castings,
Complex, and Heavy-Duty Components

We begin with a high-quality pattern, typically crafted from wood or aluminum, which precisely replicates the final component's geometry.

High-quality silica sand is mixed with the phenolic resin binder using a sand mixer. this resin sand is poured into the mold and pressed firmly. With the skillful workers of Keboer, extremely precise sand molds are produced.

the sand mold solidifies at room temperature, forming a hard and durable mold. If necessary, a clay core for forming the internal cavity can be inserted, and then the upper and lower molds can be closed together.

Molten gray or ductile iron, precisely controlled for temperature and chemical composition, is poured into the mold cavity. The casting is allowed to cool and solidify for a period of 7 to 72 hours.

Once solidified, the sand mold is broken away from the casting in a process called shakeout. The casting then proceeds to finishing stages, including shot blasting and grinding, to prepare it for machining or final delivery.

For custom casting parts that require more stringent tolerances, each finished product undergoes strict final inspection before shipment, including 3D scanning and ultrasonic testing, to ensure that it meets all the specifications required by the customers.