Surfaces Process by Roller Burnishing

Roller Burnishing Process

Roller Burnishing operation is a chipless finishing method. By the rolling pressure applied to the workpiece surface, the microscopic peaks flow into the valleys in the surface profile.

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The chipless finishing process, roller burnishing cold – works metal under relatively small forces. These forces slightly exceed the yield strength of the material causing a plastic deformation of its surface material. Because the plastic deformation occurs under the recrystallization temperature this process is called cold working.

Roller burnishing is cold working the surface of the work piece to improve surface structure. It produces a fine surface finish by the planetary rotation of harden rollers over a bored or turned metal surface. The roller burnishing operation compresses the “projection” (peaks) into the “indentations” (valleys) thus forming a smooth mirror finished surface.

the yield point of the piece-part material, the surface is plastically deformed by cold flowing of subsurface material. The result is a mirror-like finish and tough, hardened surface.

The pressure required for roller burnishing depends on various factors like tensile strength of the material, surface toughness before and after roller burnishing, ductility, shape of the rolls and diameters.

Parts & Surface Processed

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Application of Roller Burnishing Tools

GM /Bronze Bushes Master Cylinder
Bearing Bushes Brake Cylinder
Bearing Housing Connecting Rod
Motor end cover Piston Rod        
End Shields Valve Rod
Rotor Stamping (ID) Valve Guide
Fan rotor Shaft Rocker Arm
Mixie /Fan Shaft Pipes
Hydraulic Cylinder Long Holes, etc
Pneumatic Cylinder Piston

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