Correct option is A
Honing is a precision finishing process used primarily for
internal cylindrical surfaces such as bores of engine cylinders, hydraulic cylinders, and bearings. Honing improves surface finish, roundness, and dimensional accuracy by removing minute amounts of material through the use of abrasive stones. It is typically used after machining processes like boring or reaming to achieve a very smooth and precise internal surface.
Purpose of Honing:
· To improve surface finish and remove machining marks.
· To correct minor errors in shape, such as out-of-roundness and taper.
· To create crosshatch patterns for oil retention in engine cylinders.
Process Description:
· Abrasive stones mounted on a honing tool rotate and reciprocate inside the bore.
· The pressure and motion help achieve uniform material removal.
Applications:
· Cylinder bores in engines.
· Hydraulic and pneumatic cylinders.
· Precision tubing and bushings.
