KVF Company Inc.

1. KVF Company Inc. Mass Metal Finisher

2. Vibratory Finishing & Tumbling • Deburring • Descaling • Deflashing • Edge Radiusing • Burnishing • Micro Finish Improvement • Degreasing • Derusting

3. Vibratory Finishing • In this batch-type operation, specifically shaped pellets of media and the parts are placed into the tub of a vibratory tumbler. • The tub is then vibrated. • The vibratory action causes the media to rub against the parts which yield the desired result. • Can finish internal features, such as holes.

4. Tumble Finishing • A horizontal barrel is filled with the parts which is then rotated. • Variations include the use of media or compounds. • As barrel is rotated the material rises until gravity causes the uppermost layer to landslide down to the other side.

5. Shot Peening & Abrasive Blasting • Steel shot and Grit • Glass Bead • Aluminum Oxide • Sand • Plastic • Soft Abrasives • Stress Relieving

6. Shot Peening • Shot peening is a metal working process which enhances the surfaces of a variety of different materials. • Various manufacturing processes used throughout the aerospace, aircraft, automotive, energy, and heavy equipment industries can produce tensile stresses on the surface of components. These processes include milling, turning, drilling, welding, severe grinding, heat treating, bending, and forming. The tensile stress left behind on the surface provides a perfect environment for a cracking or stress corrosion to start forming, reducing the life of these components. • Shot peening is performed by accelerating spherical media toward the surface of a part. When the media hits the part, a small dent is formed, stretching the surface of the part. The material surrounding that dent resists this, and creates an area of compressive stress. When the surface of the part has these small dents all over the surface, there is a continuous layer of compressive stress on the surface of the part. This replaces the tensile stress on the surface with a compressive layer. The compressive layer stops the fatigue cracks and stress corrosion that typically start at the surface of the part.

7. Examples of Parts Shot Peened to Improve Life • Crankshafts • Camshafts • Landing gear • Ring and pinion gears • Spur gears • Compressor disks • Turbine disks • Compressor airfoil and roots • Aircraft wheels • Connecting rods • Coil springs • Leaf springs

8. Abrasive Blasting • The operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface, or remove surface contaminants.