GEM microfinisher using film technology to give repeated great results for superfinishing hard and soft coatings, rolls and cylinders

1. The Perfect Finishing System

5. How big is a Micron ?
2,000 times size
Human Hair
.
.0035 Inch
.0889 mm
.0001 Inch
.00254 mm
.
Micron
.001 Inch
.0254 mm
.000039 Inch
.001 mm

6. Abrasive Construction

7. Grades
•Micron 0.1µm to 150µm
•Mesh Size 60 ~ 10,000
Minerals
•Aluminum Oxide
•Silicon Carbide
•Diamond

8. Forged Steel
Chilled Iron
Chrome Plating Ceramic Coatings
Copper
Tungsten Carbide
Urethane
Nickel
Aluminum
Rubber
Cast Iron
Teflon
Stainless Steel

9.  Optimum
Finish
 Controlled
Process
 Repeatable
/ Predictable
 Fast
 Easy
 No
to use
Rejects

10. Large Cyliners/ Rolls

Paper

Steel
 Foil
 Plastic
Film
 Rubber Rolls
 Hydraulics
 Printing

11. Large Part Microfinishing
Specific Finishes
 Remove Chatter
 Remove Grind Feed Lines
 Remove Deep Scratches
 Mirror Finishes


12. Supply
Variable Infeed Pressure
Take Up

14. Incoming Finish
Platen Style & Hardness
Infeed Pressure
Abrasive – Type and Grade
Part Rotational Speed
Oscillation Frequency
Size of Roll / Part

15. Attachments

18. Attachments
Specials

33. Roll / Cylinder Microfinisher

35. Ra - only an Average
These three markedly different surface profiles have the same Ra value

36. Ra Rq
Ra: The Average Roughness Height is
the average absolute distance from the
mean line of the roughness profile within
the evaluation length.
Rq: is the root-mean-square roughness
average deviation from the mean line
within the evaluation length.

39. Rp: is the maximum height of the
Roughness profile above the mean line
Within the evaluation length (5 cutoffs)
Rpm: is the mean of the 5 Rp values in
The successive cutoff lengths

40. ADF Curve
Sk: is the measure of the symmetry of the
ADF curve about the mean line. Negative
Skewness indicates a plateau - dominated
Surface, and a positive skewness indicates
a peak – dominated surface.

42. Comparison of Good and Bad Bearing Area

43. Seal Manufacturers Specification for
Off Road Machinery Hydraulics