MICROFINISHING

What is Microfinishing?

MICROFINISHING (SUPERFINISHING) IS THE ULTIMATE ABRASIVE PROCESS, ALLOWING USERS TO:

  • Remove the amorphous surface layer (thermally damaged) caused by grinding

  • Obtain very consistent surface finishes with predictable and repeatable results

  • Achieve virtually any surface finish - Ra, Rz, Rt, Rpk, Bearing Area

  • Eliminate microscopic burrs left by grinding

  • Remove grinding-induced defects such as noise, facets, chatter

  • Improve geometry - roundness, flatness

  • Improve part function efficiency, reduce noise and friction

Results of Microfinishing

  • Imparts superior surface finishes and geometry characteristics

  • Removes chatter and lobing generated from pre-process operations

  • Oil seal surfaces created by removing feed marks and creating micro-annular groves

  • Mirror finishes (less than .01 Raµm)

  • Assures lower warranty costs

  • No component "break in" required

  • Reduction in oil film thickness

  • Lower friction allowing higher performance

  • Higher component efficiencies

  • Removal of ferrite caps in nodular iron parts

What is GBQ?

The IMPCO Generating Bearing Quality Machining Process

  • The process uses non-compressible abrasive tape available in a range of grits.

  • The tape is pressed against the surface by two hard shoes that are under hydraulic pressure.

  •  The bearing component is rotated and oscillated between centres for a defined period.

  • Typical machining time is less than 10 sec.

  • Fresh abrasive tape is incrementally indexed after each process cycle to ensure a consistent cutting edge.

  • The GBQ process typically removes between 2 and 10 microns of material from the bearing surface.

© Neuteq Europe Limited 2020

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