CCGT09T304-AK Aluminum Insert Case Study | CNC Turning Finish

2026-07-14 Share

Case Study: How CCGT09T304-AK Aluminum Inserts Support High-Quality Surface Finishes for a French CNC Engineer

When turning aluminum alloys, achieving a smooth surface finish and maintaining dimensional accuracy are key objectives for CNC machinists. Recently, we received practical application feedback from one of our customers, David, a CNC technician based in France.

David used our CCGT09T304-AK (Grade CD6320) carbide inserts to machine precision components, demonstrating how the right geometry and grade can improve aluminum machining outcomes.

The Application: Engine Rings and Custom Plugs

David was contracted to produce specific automotive parts: a custom ring that goes on an engine and two custom plugs. Engine components typically require tight tolerances and a stable finish to ensure reliable performance under standard operating conditions.

Using our CCGT09T304-AK inserts, David successfully machined:

  1. The Engine Ring: An aluminum sleeve featuring clean chamfers and a bright, smooth surface.

  2. Two Custom Plugs: Threaded aluminum plugs with clear thread definitions and clean face finishes.

"It's a ring that goes on an engine, as requested by a customer. The other two are plugs that I made for your inserts," David shared, along with photos of the finished workpieces.

Why CCGT09T304-AK Works for Aluminum Turning

Aluminum alloys can be challenging to machine due to their tendency to stick and cause built-up edge (BUE), which can degrade the tool's cutting edge. Our CCGT09T304-AK CD6320 insert is designed to address these challenges:

  • Polished Rake Face (-AK Chipbreaker): The rake face of the insert is polished to reduce friction, helping aluminum chips slide off smoothly and reducing the likelihood of built-up edge.

  • Sharp Cutting Edge: The ground cutting edge shears through aluminum cleanly, lowering cutting forces and reducing burrs on the workpiece.

  • Reliable Grade CD6320: This uncoated, micro-grain substrate offers good wear resistance and thermal stability, contributing to a stable tool life and consistent dimensions across production batches.

The Result: Quality Parts and Smooth Operation

As shown in the comparison photos, the newly machined aluminum ring exhibits a clean, uniform finish. For CNC machine shops aiming to improve their efficiency, reduce tool change frequency, and deliver high-quality parts, our CCGT series offers a balanced combination of performance and cost-efficiency.

Are you working on precision aluminum turning projects? [Contact our technical team] to discuss matching insert geometries for your specific machining setups.


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