Sand Casting
- Green Sand
- Floor molding
- Squeezers
- Automatic Molding
- No Bake Sand/Resin
- Automatic molding
- Floor molding
Shell Mold Casting
- SIGMA provides shell mold casting for tighter tolerance molding and superior surface finish.
- Castings from 1 lb-75 lbs.
Stack Mold Casting
This high production method of shell mold casting achieves tighter tolerance and superior surface finish.
Investment Casting
This lost wax method produces the most accurate production castings.
Die Casting
SIGMA uses this high pressure molding technique for aluminum alloys.
Vacuum Molding
SIGMA OEM’s innovative vacuum molding method uses a flask and vacuum technology that offers many benefits.
- No binding agent is required, so there is a cost savings.
- Sand can be recycled.
- Produces excellent surface finish.
- Well suited to the fabrication of counterweights.
Forging
- Open Die
- Closed Die
Specialty Coating
- Liquid Spray Paint
- Powder
- Electrostatic Coating
- Galvanizing
- Water Soluble Rust Preventive
Machining
SIGMA OEM can handle all quantities and sizes of components ranging from extremely simple to highly complex.
Assembly
SIGMA OEM can deliver shipments for self-assembly, or we can provide fully assembled and tested products.