Ceramic Breaker Cores

• Substantial cost and time savings in fettling, resulting in higher throughput and faster billing to customer.
• Saving in metal material loss, labor costs and consumables due to absence of gas cutting, gouging, weld cutting.
• Freedom from sand fusion around riser neck.
• Reduction in heat treatment cost as risers would be broken off / hammered prior to heat treatment (without any fear of cutting cracks which are normally observed in high Manganese Steel castings if gas cutting / weld cutting is used).
• Reduction in rejection due to neck shrinkage or salvage operations.
• Freedom from core production bottlenecks.

Breaker cores have taken on various shapes and sizes but the standard breaker cores have 40%, 50%, and 70% round openings, depending upon the alloy involved. This is where the diameter of the opening is 40%, 50% or 70% of the diameter of the riser diameter. Depending on casting size and section we make breaker cores with opening from 20mm up to 100mm diameter.

We make mesh breaker cores^TM which is widely used in the SS 300 series castings. The star breaker cores are also used in SS 300 series and Manganese Steel castings. Others shapes include Oval and Kidney shaped  openings. These are commonly used where the casting design does not have room for a round contact, such as on a long thin section of the casting. Normally, the openings in a breaker core are located in the centre of the riser. However, sometimes it is necessary to move the contact to an offset position under the riser. The main reason for offsetting the opening is to make sure that the contact is located over the heaviest section of the casting in a specific

Commercial viability of using Ceramic Breaker cores as compared to in house sand breaker cores