3M abrasive prods. for grinding and finishing of hard coatings Manuale Utente
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Industrial Business
Bldg. 21-1W-10
Bldg. 21-1W-10
900 Bush Av.
St. Paul MN 55144
1-866-279-1235
www.3m.com/industrial
1-866-279-1235
www.3m.com/industrial
5284 (HB)
61-5002-8137-5
Issued: 5/06
3
3M, Cubitron and Trizact are trademarks
of 3M Company. Used under license by
3M subsidiaries and affiliates.
of 3M Company. Used under license by
3M subsidiaries and affiliates.
© 2006 3M
3
Abrasive Products
for Grinding and
Finishing of Hard
Coatings
Application Guide
Operating Conditions
Contact Wheel
Contact Wheel
Incompressable Aluminum, Steel, Polymer;
1/4” wider than abrasive belt
Alternate Contact Wheel
90 Shore A, smooth or serrated
Abrasive Speed
6000 – 7000 sfpm
Coolant
Water with 4-8% synthetic coolant
Rod Rotation
100 sfpm
Head Traverse Speed
.020” – .070”/revolution (depending on chrome/coating thickness)
Head Motor Load
33% over no-load
The 3M Customer Abrasive Methods (CAM)
Center, located at 3M’s St. Paul, Minnesota,
headquarters, was established to help
customers identify the most cost-effective
combination of abrasives, equipment and
techniques for their particular applications.
At the CAM Center, evaluations are carried
out under controlled, repeatable conditions
using a wide array of production scale
grinding, polishing and finishing equipment,
as well as in our on-site research and
testing laboratories.
The services of the 3M CAM Center
include applications development,
process optimization, operator
training and other technical
support. Contact your local 3M
representative for more information.
Contact your 3M
representative for
more details
representative for
more details
It’s like adding two new grinders – with a minimal investment
in new equipment.
in new equipment.
3M has partnered with equipment builders who will work
with you to convert your existing grinder into a flexible tool,
capable of utilizing both wheels and 3M superabrasive belts.
with you to convert your existing grinder into a flexible tool,
capable of utilizing both wheels and 3M superabrasive belts.
Now you can experience increased production, ease of use
and consistent performance of 3M abrasive belt technology
on your existing bonded wheel grinder – for as little as 5% of
the cost of a new machine!
and consistent performance of 3M abrasive belt technology
on your existing bonded wheel grinder – for as little as 5% of
the cost of a new machine!
By reducing the cost of each part produced, your converted
grinder can pay for itself in as little as six months.
grinder can pay for itself in as little as six months.
Convert your wheel grinder into a high
performance machine capable of using
3M
™
Superabrasive products – and increase
your capacity up to 3X!
Process Recommendations
and Expected Results
Increasing restrictions on the use of hexavalent chrome have
hastened the switch to thermal spray hard coats and other
advanced materials in high performance corrosion control and
wear-resistance applications.
Traditional grinding and finishing methods are proving less
effective on many of these newer, hard-to-grind materials
– slowing down production and driving up costs.
Now, 3M brings you a broad range of solutions designed to
meet today’s tough processing challenges. From grinding-to-
dimension all the way to superfinishing, 3M has the tools you
need to achieve stringent geometry tolerances and finish specs,
part after part. Compared to traditional bonded wheels and
honing stones, 3M abrasive belts are easier to use, and less
dependent on operator skill – for more consistent, predictable
results. And because they cut faster, and don’t require dressing,
3M abrasive belts can help you increase production without the
need to invest in new machines or add shifts.
Just as important, 3M offers you the technical support and
application development resources – backed by over 100
years of abrasives experience – to help optimize your process,
and take full advantage of all the benefits these exciting new
technologies have to offer.
Base Material Prep & Dimensioning with 3M
™
Cloth Belt 966F
Grade Stock Removal (Inches)
Finish (Ra Micro-Inch)
Mild Steel
Hardened Steel
24
0.010 – 0.015
>200
36
0.007 – 0.010
160 – 190
40
0.005 – 0.009
140 – 180
50
0.005 – 0.008
130 – 170
60
0.004 – 0.007
120 – 150
80
0.003 – 0.006
100 – 130
Base Material Prep & Dimensioning with 3M
™
Trizact
™
Cloth Belt 953FA
Grade Stock Removal (Inches)
Finish (Ra Micro-Inch)
Mild Steel
Hardened Steel
A300
0.002 - 0.003
68/470
A160
0.001 - 0.0015
61-428
A100
0.001
45/312
A80
0.0008
38/290
A65
<0.001
33/245
A45
<0.001
21/154
A30
<0.001
14/114
A16
<0.001
10/75
A10
neg.
5/41
A6
neg
3/25
Operating Conditions
Recommended
Acceptable Range
Workpiece Speed
300 sfpm
150-350
Traverse Rate
0.07 inch/rev
0.03-0.1
Abrasive Support
65 Shore A Roller
Abrasive Speed
1 inch/min
Pressure
20 lbs/inch width
10-40
Oscillation
Alternating Moderate/None
Coolant
Water with 4-8% synthetic coolant
Superfinishing with 3M
™
Diamond
MicrofInishing Film 675L
Sequential Surface Finishes
Obtained (Ra Micro inch)
74µ
45µ
30µ
20µ
Roll Material
Thermal
Spray
Coatings:
Tungsten Carbide Ra
12-16
8-12
5-8
2.5-5
Chrome Carbide Ra
15-20
10-14
6-10
4-6
Nickel Based
Ra
20-55
14-19
6-10
4-6
Chrome Oxide
Ra
~55
~45
Life after chrome:
It’s not the same old grind.
Superfinishing with
3M
™
Diamond Lapping Film
Sequential Surface Finishes
Obtained (Ra Micro inch)
30µ
15µ
9µ
3µ
Roll
Material
Thermal Spray Coatings:
Tungsten Carbide
Chrome Oxide
Aluminum Oxide
Ra
2
(2 passes required)
1 – 2
1
<1
Rmax
49
39
25
15
Operating Conditions
Recommended
Acceptable Range
Belt Speed (SFPM)
6,000
4,000-7,000
Workpiece Speed
75
50-150
Traverse Rate
1/8 inch/rev
1/10-1/4 inch/rev
Contact Wheel
Incompressable Aluminum, Steel, Polymer;
1/4” wider than abrasive belt
Alternate Contact Wheel 90 Shore A, smooth or serrated
Coolant
Coolant
Water with 4-8% synthetic coolant
Roll Grinding with
3M
™
Trizact Diamond Cloth 663FC
Sequential Surface Finishes Obtained
Ra (micro inch) Infeed (inches on radius)
70µ
40µ
20µ
Roll Material
Thermal
Spray
Coatings:
Tungsten Carbide Ra
20-30
10-20
4-10
Infeed
0.0008
0.0005
0.00025
Chrome Carbide
Ra
25-35
15-25
6-12
Infeed
0.0012
0.0008
0.0005
Nickel Based
Ra
40-50
30-40
20-30
Infeed
0.0017
0.0012
0.0006
Chrome Oxide
Ra
60-80
40-50
20-30
Infeed
0.003
Chrome Stripping with 3M
™
Cloth Belt 966F
Coating Removal with Diamond Cloth Belt 663FC
Bonded wheel conversion
by Abbott Machine Company
Alton, Illinois
Bonded wheel conversion, superfinisher
combination by Finishers Tech
3M’s technical service engineers recommend the following sequences for
grinding and finishing of hard coatings. Your actual process and finishes
may vary depending on your equipment, parts and material.
Operating Conditions Recommended
Acceptable Range
Contact Wheel
Incompressable Aluminum, Steel, Polymer;
1/4” wider than abrasive belt
Alternate Contact Wheel 90 Shore A, smooth or serrated
Belt Speed (SFPM)
Belt Speed (SFPM)
6,000
4,000-7,000
Workpiece Speed
75 sfpm
50-150
Traverse Rate
1/8 inch/rev
1/10-1/4 inch/rev
Coolant
Water with 4-8% synthetic coolant
Operating Conditions
Recommended
Acceptable Range
Workpiece Speed
300 sfpm
150-350
Traverse Rate
0.07 inch/rev
0.03-0.1
Abrasive Support
65 Shore A Roller
Abrasive Speed
1 inch/min
Pressure
20 lbs/inch width
10-40
Oscillation
Alternating Moderate/None
Coolant
Water with 4-8% synthetic coolant
Operating Conditions
Recommended
Acceptable Range
Belt Speed (SFPM)
6,000
4,000-7,000
Workpiece Speed
75
50-150
Traverse Rate
1/8 inch/rev
1/10-1/4 inch/rev
Contact Wheel
Incompressable Aluminum, Steel, Polymer;
1/4” wider than abrasive belt
Alternate Contact Wheel
90 Shore A, smooth or serrated
Coolant
Water with 4-8% synthetic coolant
Operating Conditions
Recommended
Acceptable Range
Belt Speed (SFPM)
6,000
4,000-7,000
Workpiece Speed
75
50-150
Traverse Rate
1/8 inch/rev
1/10-1/4 inch/rev
Contact Wheel
Incompressable Aluminum, Steel, Polymer;
1/4” wider than abrasive belt
Alternate Contact Wheel 90 Shore A, smooth or serrated
Coolant
Coolant
Water with 4-8% synthetic coolant