sales@sandwell-uk.com   +44 (0) 1327 350205

Superfinishing

Our superfinishing process is designed to refine and polish surfaces to enhance component performance.

We have a range of machines to refine surfaces finish of 3D additive parts to finely ground components. From a simple deburr to fine finish we can match a machine and process to your requirements. We are processing gears and other transmission parts daily with outstanding success.

For more information or for a quotation, contact us today.

Superfinishing

Our superfinishing process is designed to refine and polish surfaces to enhance component performance. This is an engineered finish with the benefit of producing a low friction surface that will reduce rolling resistance and hence contact stresses. Of most benefit on transmission parts as well as sliding and rotating surfaces. Whilst the final finish is dependent on the quality of surface we are working from it is possible to get down to 0.03 Ra.

Benefits and Features of Superfinishing

Some of the features and benefits of superfinishing are:

  • Produces fine low friction surface.
  • Increases power efficiency
  • Reduces contact stress
  • Reduced operating temperatures

Effect of Superfinishing on Gear Life
NASA Technical Memorandum 20000056096

 

Data in this NASA graph is an indication of the increase in gear life that can be achieved by superfinishing. This improved surface finish provides a much reduced contact stress pattern.

Superfinishing in Action

In this image the surface of this cam fastener shows typical shot peened surface texture. The second image is the same part post superfinish. The residual compressive stress achieved by shot peening is still retained but the surface now has a much smoother surface finish to reduce rotational contact stress.

As well as reduced contact stress and the removal of stress concentrations there is an additional benefit for components running in or around liquids. The smooth surface improves the ability to shed liquids from the surface hence the liquid is recirculated and not retained on the component this is a particular benefit on components like gears, conrods and crankshafts.

Image shows superfinished crankshaft.

Contact us

+44 (0) 1327 350205 | sales@sandwell-uk.com

Sandwell UK Ltd 2 Foundry Place, Towcester, Northamptonshire, NN12 6FP