1. Mechanical Surface Finishing Processes
Chapter 16

2. Finishing vs other final processes
Finishing processes are not intended to significantly change the dimensions of the product.
Finishing processes are intended to:
Achieve closer tolerances
Provide a protective coating
Improve the appearance of the part

3. Surface Preparation Deburring Stripping/Cleaning Hand
Barrel and vibratory
Belt or disk sanding
Stripping/Cleaning
Dry and wet blasting
Power Brushing
Ultrasonic cleaning

4. Smoothing Operations Honing Superfinishing Lapping Abrasive stones
Finish auto cylinder walls
Superfinishing
Chrysler Corp version of honing
Lapping
Removes less than inch (0.01 millimetre)

5. Polishing Fine scale abrasion Smearing
Push high points over into the low places to smooth out the surface.

6. Buffing Used to produce a high luster
Remove scratches from the surface
Often precedes polishing
Gives a smooth lustrous surface, Polishing puts the shine on the part.

7. Burnishing Brush the surface with a wire brush Uniform smooth finish
Dull surface

8. Ballizing Forcing a ball through a hole slightly cut undersize.
The ball passing through the hole
Hardens
Sizes
Smoothes

9. Bearizng Used on larger holes than ballizing
Roller bearings are mounted similar to honing stones
Sizes
Work hardens the hole.

10. Finish Specification Information needed See page 324
Process of final manufacturing operation
Waviness, roughness and lay required
Process of the surface prep or finish
Type of coating to be applied
Process to apply the coating
See page 324