In the honing process, _____

Question

Question

This question was previously asked in

ALP CBT 2 Fitter Previous Paper: Held on 23 Jan 2019 Shift 2

Answer 1

Explanation:

Honing:

Honing is an abrading process mostly used for polishing bored and reamed holes and external cylindrical surfaces using bonded abrasive stones (called hones).
Honing is, in fact, a cutting operation and is used to remove material less than 0.25 mm but sometimes it is used to remove stock up to 3 mm also.
The honing is mainly used to correct some out-of-roundness, taper, and tool marks left by previous operations or axial distortions.
Honing is done by means of bonded abrasive grit sticks (of aluminium oxide or silicon carbide) applied to the surface to be honed under controlled pressure and with a combination of rotary and reciprocating motions of abrasives.

Important Points

Lapping:

It is an abrading process for refining surface finish and the geometrical accuracy of flat cylindrical and spherical surfaces.
It is a process or removing surface roughness, tool marks, surface cracks from grinding, slight distortions and other minor – defects from previous operations.
Lapping produces geometrically true surfaces, corrects minor surface imperfections, improves dimensional accuracy and provides a very close fit between two contact surfaces.
Since very thin layers of metal (0.005 to 0.01 mm) are removed in lapping, it is, therefore, unable to correct substantial errors.