Sand Casting

As a cost-efficient casting method, sand casting is still popular in China. Basically, it refers to make a sand mold with cavity of casting shape inside. Then, we get the casing after pouring metal into the cavity and metal solidifies.

In Our sand casting plant, we have both manual and semi-automatic production lines for castings with various size, weight and geometries. Besides, our plant has?capacity ranges from 3 lbs. to 2500 lbs.

Green Sand Molding Process

This is the most cost-efficient method. In this process, granular refractory sand is coated with a mixture of betonies clay, water. We use resin or aluminum patterns to form the cavity. However, the surface roughness and tolerance on green sand molding are not as good as resin sand molding process.

Resin Sand Molding Process

We also call this process as resin-bonded sand molding method. Because of the resin-bonded sand, the sand mold is harder than green sand molding. Additional burning of coated sand will make the sand mold solid. This creates a good surface and tight tolerance for the casting. However, this process will take more time and cost more than regular green sand molding.

Sand Casting Process

Shell Mold/Tooling Making

Casting designs and makes tooling in house. We use resin or aluminum patterns to form the cavity.

Mold Forming

Operators pour sand into the mold with pattern, core, and gate system. Then they compact the sand mold manually or mechanically.

Metal Pouring

Operators pour metal through the gating system. After metal solidified and casting cooled, they shake out the sand.

Casting Cleaning

Operators cut off the gate and grind the gate position and parting lines. Eventually, we get the raw casting ready to finish.

Sand Casting Products and Alloys