How We Machine Hard Materials with CNC

Hard materials like titanium, hardened steel, and Inconel demand a different approach. Standard cutting strategies don't work. The tool wears fast, heat builds up, and achieving surface finish is a constant battle.

At AOOM, we have 40+ CNC mills and lathes. Fifteen of them are dedicated to hard material processing. This specialization makes a difference.

Our Techniques for Hard Materials

Tool selection. We use carbide and CBN tools with TiAlN or diamond-like carbon coatings. These handle the high temperatures generated during hard material machining.

Cutting parameters. Reduced feed rates with higher spindle speeds. This combination prevents work hardening and extends tool life.

Fixturing. Our 5-axis machines have vibration-dampening systems. Rigid fixturing keeps the workpiece stable during heavy cuts.

Coolant. Through-tool coolant delivery removes heat from the cutting zone. This prevents thermal deformation and maintains dimensional stability.

An aerospace client needed Inconel 718 turbine components. The material is notoriously difficult. We programmed trochoidal toolpaths that distributed heat evenly. Tool life improved by 40% compared to their previous supplier.

Post-Processing

We offer heat treatment and precision grinding after machining. CMM inspection ensures ±0.005 mm tolerances hold even after post-processing. Our in-house tool grinding lets us create custom geometries for specific jobs.

Hard materials are not for every shop. We've invested in the equipment and the knowledge to do it right.

Send your CAD files to chen@aoomtech.com for a quote within 24 hours.