2 February 2016

Advantages and disadvantages of roller burnishing

Roller burnishing is a technique of surface finishing in which hardened rollers work cold surface imperfections to reduce surface roughness. In that material is displaced rather than removed, roller burning differs from abrasive surface finishing techniques. Let us have a deep insight into the pros and cons of roller burnishing process in this article. 

Advantages of roller burnishing :

  • Surface finish is good as a mirror Rz < 1 µm / Ra < 0.16 µm can be obtained. 
  • It is possible to achieve very close and consistent dimensional tolerance.
  • Accurate sizing and short cycle time. 
  • Single-pass operation and very less cycle time are required to complete the job to required surface finish and tolerance.
  • The surface hardens at the same time ensures that the processed surface to become stronger, and more slippery and yield point is increased. 
  • Reduces reworks and rejections.
  • No sawdust and residues occur so no noise and damage to the environment. 
  • It is too much economical, low spare part consumption and saves time, money and energy. 
  • The performance, fatigue strength, wear resistance, corrosion resistance has been improved. 
  • Cost of roller burnishing tool is low, which is 10 to 100 times lower than the cost of grinding machine. 

Disadvantages of roller burnishing :

  • There is obvious stratification between this layer and the inner material cause the surface to fall off. 
  • The rigidity of the roller burnishing tool is large, which damages the machine tool. 
  • It can not satisfy the processing of rigid parts such as thin-walled pipe fittings. 

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