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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

  • 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
Types of Abrasives
  • Conventional
    • Aluminum oxide
    • Silicon carbide
  • Super abrasives
    • Cubic boron nitride
    • diamond
grinding wheels
Grinding Wheels
  • Operations done to preserve the properties of the wheel
    • Dressing
    • Truing
    • shaping
grinding operations
Grinding Operations
  • Examples of grinding operations
    • Surface grinding
    • Cylindrical grinding
    • Internal grinding
surface finishing
Surface Finishing
  • Any of different processes employed for surface, edge, and corner preparation, as well as cleaning, and coating.
lapping
Lapping
  • Finishing operation in which a loose, fine-grain abrasive in a liquid medium abrades material.
lapping cont d
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
polishing
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.