Production – Our Production Engineers have the responsibility for sand casting production design and supervision. They work in cooperation with the Q.C. department to make sure each aspect of the sand castings specifications are met accurately, promptly and in a cost effective way.

Support Facilities are NADCAP Approved Special Processors:

  • Radiographic Inspection
  • Penetrant Inspection
  • Ultrasonic Testing
  • Magnetic Particle Inspection
  • Metallurgical Testing
  • Heat Treat

Which casting process is best? The volume of parts is not a critical factor in choosing the best casting process but the secondary manufacturing steps are. These secondary steps can add substantially to the cost of a manufactured part. Therefore using the casting process that reduces or eliminates the secondary processes is most critical. Sand Casting is the process that is most effective when the requirement includes secondary manufacturing steps.

If your part doesn’t require most of the advantages of the Investment Casting process you should consider the less costly Sand Casting process.

Recommended Sand Casting Design Specifications
Surface Finish
C-50 Aluminum Casting
C-90 Steel Casting
Linear Tolerances
± .030″ for 12″ and
± .003 per inch thereafter
(Aluminum)
 
± .060 for 12″ and
± .006 per in. thereafter
(Steel)
Flatness & Straightness
Up to 6″ w/in .030
Up to 12″ w/in .060
Over 12″ ±.010 in/in
Concentricity
When a lenght of a tubular part does not exceed its component diameter by more than a factor of 2, the diameters will be concentric within .015 inch per inch of Spearation (un-correctness).
Roundness
Variation from a true circle will not exceed the linear tolerance limit on a diameter or radius.
Angles
± 2°
Draft
1° to 2° draft required