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Grinding

Grinding. Grinding is a process which utilizes the use of abrasive particles bounded together to produce superior surface finishing An abrasive: is a small, nonmetallic hard particle having sharp edges and an irregular shape. Types of Abrasives. Conventional Aluminum oxide Silicon carbide

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Grinding

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  1. Grinding • Grinding is a process which utilizes the use of abrasive particles bounded together to produce superior surface finishing • An abrasive: is a small, nonmetallic hard particle having sharp edges and an irregular shape

  2. Types of Abrasives • Conventional • Aluminum oxide • Silicon carbide • Super abrasives • Cubic boron nitride • diamond

  3. Grinder Forms cont’d

  4. Grinder Wheels

  5. Grinding Wheels • Operations done to preserve the properties of the wheel • Dressing • Truing • shaping

  6. Dressing

  7. Grinding Operations • Examples of grinding operations • Surface grinding • Cylindrical grinding • Internal grinding

  8. Grinding Machines

  9. Grinding Machines

  10. Grinding Machines

  11. Surface Finishing • Any of different processes employed for surface, edge, and corner preparation, as well as cleaning, and coating.

  12. Lapping • Finishing operation in which a loose, fine-grain abrasive in a liquid medium abrades material.

  13. Lapping cont’d • Lapping is an extremely accurate process • It corrects minor shape imperfections. • Refines surface finishes • Provides a close fit between mating surfaces. • Dimensional Tolerances = 0.00005mm

  14. Polishing • An operation to smooth off roughness from a work-piece, or put a high finish on metal by using a polishing wheel. • Polishing wheel is a wheel made of one of several kinds of materials and coated with abrasive grain and glue.

  15. Polishing cont’d

  16. Questions

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