Copper Chills
Copper Chills are precision-machined inserts manufactured from high-conductivity copper alloy and embedded within the die to produce controlled, rapid local solidification in thick sections or isolated hot spots that cannot be reached by conventional water cooling circuits. The thermal conductivity of copper (approximately 390 W/m·K) is far higher than that of the surrounding H-13 tool steel (approximately 28 W/m·K), enabling it to act as a thermal sink that accelerates local solidification. Vyankatesh Engineering's Copper Chills are manufactured to precise dimensions for accurate seating within the die, and are regularly used to eliminate localized shrinkage porosity in thick-walled aluminum castings.
Industries Served
Engineering Detail
Key Features
High-conductivity C110 copper alloy for maximum thermal extraction rate
Precision-machined to tight seating dimensions for full contact with the surrounding die steel
Custom geometry — any profile that fits within the available die space
No external cooling connection required — operates purely on thermal conduction
Can be combined with direct water cooling for even faster heat extraction in extreme cases
Easy to replace when worn or eroded without modifying the surrounding die
Manufacturing Detail
Material, Finish & Customization
Use Cases
Applications
- Thick-section boss and rib features in aluminum castings prone to shrinkage porosity
- Isolated hot spots in GDC and LPDC dies that cannot be reached by drilled cooling circuits
- Controlled solidification in alloy wheel hubs and spoke junctions
- Heavy sections in structural automotive castings requiring dense microstructure
Why Choose Vyankatesh
Key Advantages
Eliminates shrinkage porosity in thick sections where conventional cooling circuits cannot reach
No plumbing connection required — simple installation directly into the die insert pocket
Copper's extreme thermal conductivity delivers results that cannot be achieved with steel-only chills
Cost-effective solution to a persistent casting quality problem
Quality Standard
Quality Assurance
Seating dimensions verified by precision measurement. Material certified as high-conductivity copper grade.
Expert Answers
Frequently Asked Questions
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