#TIVAR #foundry #linings
Casting sand is generally fed into funnel shaped hoppers by a conveyor, which generally causes the sand to bridge across the walls. Casting sand also has the physical property of caking on the walls of the hopper generating areas of stagnant material. This causes production downtime due to increased cleaning, and it also impacts the quality as the sand dries out it causes irregularities in the casts. In order to keep the material moving, operations used a plethora of different flow promotion techniques to prevent the material from bridging and caking with very limited success (e.g. hammering and vibration). Due to the rough treatment of the hoppers, they were having to be replaced on a routine basis.
After hearing about TIVAR 88 at the Powder Show, the foundry decided to try to address the hopper problem using a quarter-inch liner. The TIVAR 88’s low coefficient of friction virtually eliminated all frictional resistance to the flow of the casting sand through the discharge opening. The liners worked so well in the hoppers that they built a chute completely from TIVAR 88.
Lawrence Industries, Inc. specializes in the design, fabrication and installation of TIVAR® 88 and TIVAR UHMW-PE materials. If you are experiencing issues with flowability of casting sand, feel free to reach out to sales@lawrenceindustriesnow.com or 260-432-9693. We can assist with lining your equipment to take full advantage of TIVAR 88 properties to improve flowability of your powders.
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