The Engineering Challenge
AeroVance Dynamics required a critical turbine blade housing component for their new high-bypass turbofan engine. The design demanded extreme thermal resistance, sub-millimeter tolerances, and a 40% weight reduction compared to legacy forged steel housings. Previous suppliers struggled with tool wear, thermal distortion during machining, and inconsistent GD&T compliance, resulting in a 12% scrap rate and extended lead times.
The component featured complex internal cooling channels, asymmetrical mounting flanges, and critical bearing surfaces requiring surface finishes of RA 0.8 µm or better. All parts had to meet AS9100 Rev D and SAE AMS 2769 heat treatment specifications without compromising structural integrity under 1,100°C operating conditions.
"We needed a manufacturing partner who could bridge advanced metallurgy with precision CNC capabilities. Traditional suppliers couldn't hit our tolerance stack-up without multiple rework cycles, which threatened our certification timeline."
MetalCore's Engineering Approach
Our team deployed a hybrid manufacturing strategy combining 5-axis CNC machining, specialized cryogenic cooling techniques, and in-process metrology. We engineered a custom fixturing system to maintain part stability during high-speed finishing, reducing thermal expansion variance by 68%.
Key technical interventions included:
- Toolpath Optimization: Adaptive clearing and trochoidal milling reduced cycle time by 22% while extending carbide tool life by 3.5x.
- Cryogenic Coolant Integration: Liquid nitrogen-assisted machining minimized work-hardening in Inconel 718, preserving surface integrity.
- In-Process CMM Verification: On-machine probing validated critical datums after each major operation, eliminating post-machining distortion surprises.
- AMS 2769 Heat Treatment: Vacuum aging and stress relief cycles were calibrated to prevent micro-cracking while achieving target hardness (HRC 34-38).
Technical Specifications
Results & Operational Impact
Within the qualification phase, MetalCore delivered 200 flight-qualified components with a 99.98% first-article inspection pass rate. The optimized process eliminated secondary rework entirely, compressing the production lead time from 38 days to 28 days. AeroVance reported an estimated $2.4M annual cost avoidance through reduced scrap, lower rework labor, and accelerated engine certification.
MetalCore didn't just machine our parts—they engineered a complete solution. Their proactive GD&T review caught three design-for-manufacturability issues early, saving us weeks of revision cycles. The quality documentation and material traceability exceeded our auditor requirements on the first pass.