Before

CNC-machined 440C stainless steel aerospace sleeve before deburring with burrs present on machined openings and critical edges.
Close-up of a CNC-machined 440C stainless steel aerospace sleeve showing burrs and rough edge conditions around a machined opening prior to deburring.

After

440C stainless steel aerospace sleeve after centrifugal finishing with burrs removed and edge breaks achieved prior to heat treatment.
Close-up of a 440C stainless steel aerospace sleeve after deburring, showing clean edge breaks and burr-free surfaces around the machined opening.

Objective

A precision aerospace manufacturer in the Southwest Michigan region needed a repeatable deburring process for CNC-machined 440C stainless steel sleeve components before heat treatment. The goal was to remove machining burrs, achieve the required edge breaks per print, and improve consistency compared to manual deburring.

IndustryAerospace/Defense, Machine Shop Applications
Part DescriptionSleeve
Fabrication MethodCNC Machined, Swiss Screw Machined
Material Steel Alloy 440C per AMS-5630
Process TypeDeburring
Equipment TypeHarperizer, Centrifugal Disc Finisher

Solution

Bel Air evaluated high-energy finishing technologies for deburring CNC-machined 440C stainless steel aerospace sleeves, including centrifugal barrel finishing (Harperizer) and centrifugal disc finishing. The focus was on removing burrs from machined openings and other critical edges before heat treatment.

The parts required consistent edge breaks and burr removal without damaging critical features. Bel Air developed a controlled finishing process that removed burrs from internal and external surfaces while maintaining part detail and overall geometry.

The final process produced clean, repeatable edge conditions ready for heat treatment. The process reduced manual deburring, improved consistency from part to part, and provided a more efficient finishing solution.

If you are unsure what equipment and media you require to achieve your desired surface finish, send us your part, and we will evaluate it and provide you with a detailed metrology report.