Core Making

The core is a chemically bonded sand shape that creates the interior surfaces of an iron casting. A core box is the tooling used to create the core. High-quality cores are essential to the iron casting process. At Poitras Foundry, we have the ability to design all types of cores in the most efficient ways possible. Our machines use coldbox type of the core making process, offering flexibility for both low and high volume applications:

 

The Isocure™ Core-Making Process

In this process, no heat is applied to the core box and a phenolic urethane resin is added to the sand. A catalyst, in this case amine gas, is introduced into the core box and purged through the core with superheated air. This process is very fast and cost effective.

Cold box core machines are:

  • Versatile to run vertically or horizontally
  • Flexible and manufactured in sizes that can accommodate up to 150 liters of sand
  • Speedy and allow quick changes
  • Adaptable to move in six directions allowing us to make complicated cores

For the production of its cores, Poitras Foundry uses:

-2 Laempe LL10 coldbox machines

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