Correct option is D
Deburring is the process of
removing rough edges, burrs, and ridges from a machined component to give it a smooth and finished appearance. This process is typically performed
manually using tools like files, scrapers, and abrasive pads, or mechanically using deburring machines. Burrs are unwanted projections formed during machining processes like drilling, milling, or cutting, and they can affect assembly, function, and safety if not removed.
Purpose of Deburring:
· Improves the dimensional accuracy of the part.
· Enhances the safety of the component by removing sharp edges.
· Improves aesthetics and prevents injury during handling.
Methods of Deburring:
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Manual Deburring: Using hand tools such as files and deburring knives.
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Mechanical Deburring: Using machines like tumblers and grinders.
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Thermal Deburring: Using heat to remove burrs from complex surfaces.
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Electrochemical Deburring: Uses electrolytic reactions to remove burrs from hard-to-reach areas.
Applications: Deburring is commonly used in automotive, aerospace, and precision engineering industries.
Buffing operation is carried out after polishing with a finer abrasive to further smoothen the surface and to provide the surface a lustrous, grain less finish.
Grinding
Grinding is a metal cutting operation performed by means of a rotating abrasive tool, called "grinding wheel".
Grinding is the most common form of abrasive machining. It is a material cutting process which engages an abrasive tool whose cutting elements are grains of abrasive material known as grit
