Service 02
Core Box Manufacturing
Shell, cold, CO2 and no-bake core boxes for complex casting geometries
Core boxes are the backbone of complex internal casting geometries. We manufacture shell core boxes, cold core (isocure/no-bake) boxes, CO2 sand core boxes, and manual core boxes compatible with CFM, MAKWELL, VEE-PEE, SUSHA and SPAN MAKWELL machines.
Shell / Cold / CO2 / No-Bake / Manual
Core Box Types
Chrome-plated Ra 0.8 (shell)
Surface Finish
±0.005mm
VMC Accuracy
Aluminium / Cast Iron / Tool Steel
Material
About This Service
Sand cores define the internal geometry of a casting — oil passages, water jackets, hollow shafts, and blind bores all require cores made from a core box. The quality of the core box directly determines the dimensional accuracy, surface finish, and consistency of every core produced from it.
We manufacture all types of core boxes at Super Innovation. Shell core boxes use resin-coated sand cured on heated platens — they produce hard, smooth cores with excellent dimensional stability. Cold core boxes (isocure process) use a gas-hardened phenolic urethane binder — ideal for complex, thin-walled cores. CO2 boxes use sodium silicate sand and CO2 gas curing — simpler process, good for low-volume production. We select the right process for your application and design the core box accordingly.
What's Included
Our Process
Core Design Review
We review the casting drawing to identify all cores required, determine parting lines, calculate core print dimensions, and select the appropriate core process (shell/cold/CO2).
3D Core Box CAD Design
The core box is fully designed in 3D CAD — including split faces, ejector pin positions, heating element grooves (for shell), gas ports (for cold/CO2), and locating pin positions.
VMC Machining
Core box halves are machined on our VMC machines. Internal profiles, parting faces, and venting slots are precision-machined. Surface is polished and chrome-plated for shell boxes.
Assembly & Trial Shot
Core box is assembled, heater elements fitted (shell type), and a trial core is shot. Core dimensions measured against drawing. Adjustments made before dispatch.
Frequently Asked Questions
A shell core box is heated (150–250°C) and uses resin-coated sand that cures on contact with the hot metal surface. It produces hard, hollow cores — ideal for high-volume production. A cold core box uses amine gas (triethylamine/DMEA) to cure phenolic urethane sand at room temperature. It produces solid cores with excellent dimensional stability — ideal for complex geometries.
Technical Specs
Compatible With
Lead Time
15–22 working days
From drawing approval to dispatch
