OTTOMMO Sand Casting Plant
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 OTTOMMO 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 Casting VS. Resin Sand Casting
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
Mold/Tooling Making
OTTOMMO 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
OTTOMMO Casting offers you a wide selection of alloys. The main alloys for sand casting list as below. However, we are not limited to alloys that we have poured. We are open to any alloys per customers’ request.
