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Cleaning & Grinding

A very efficient and economical process.

Franklin Bronze Precision Components investment castings are transformed into their required condition that meets customer satisfaction via:

  • High-pressure water blast system
  • Cut-off saws
  • Grinders (manual & robotic)
  • Shot blasting machines

The water blasting process is very economical and efficient and allows for no surface damage to the castings.

All this is accomplished in a newly expanded cleaning department which also includes a caustic ceramic core removal system and two NC controlled automatic grinders.

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Cleaning & Grinding Process

A critical step in the investment casting process is the removal of the ceramic shell from the poured and solidified mould.  This is done at Franklin Bronze via a high pressure 10,000 to 12,000 PSI (6.8947 to 8.2737 kpa) water blasting system.

Besides being a very effective and economical method for shell removal, there is no damage to the surface of the castings during this process.  This is important for any castings that are decorative in nature, or allow only for minimal abrasive blasting due to surface finish requirements.  This is especially true for aluminum castings, in which the surfaces are especially prone to damage from abrasive blasting.

All water used in this process is either filtered and reused or evaporated.

Utilizing numerous traditional cut-off saws, grinders, and shot blasting machines, all castings are transformed into their required condition that meets customer satisfaction.  These secondary operations are all accomplished in a newly expanded cleaning department.  This area also includes a caustic ceramic core removal system and two NC controlled automatic grinders.

After part removal, the central gating system itself is segregated by metal type and recycled back for future melt stock.


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