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3M™ Diamond Microfinishing Film Roll 675L

Products
  • Micron-graded diamond mineral delivers close tolerance precision finishes for medium stock removal
  • Enables slow abrasive feed rates and fewer steps which reduces abrasive costs
  • Polyester film backing allows roll to be used dry or wet with surface lubricants
  • An exceptional roll for thermal spray finishing of contour / complex shapes
 More...
Length
Micron Grade
Products Available
Available options:
 Length and Micron Grade
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Specifications
Attribute Name
Value
Application
Finishing
Application Category
Finishing/Polishing
Backing Material
Polyester Film
Backing Thickness (Imperial)
5 mil
Backing Weight
5MIL
Bonding Type
Resin
Brand
3M™
Color
Beige, Green, Multi-Color, Beige, Gray, Green, Teal
Core Size
3 in
Core Size (metric)
76.2 mm
Equipment - Machines
Superfinishing Machines
For Use On
Carbide, Cast Iron, Ceramic, Chilled Cast Iron, Chrome Carbide, Chrome Oxide, Granite, High Nickel Alloy, HVOF, Nickel Based, Non-ferrous Metals, Oxides, Soft Metals, Stone, Tungsten Carbide
Hole Configuration
Plain
Industries
Aerospace, General Industrial, Precision Grinding & Finishing, Transportation & Heavy Equipment
Length
50 Foot, 50 Linear Foot
Length (Metric)
15.2 m, 15.24 m
Micron Grade
20 μm, 30 μm, 45 μm, 74 μm
Mineral Type
Diamond
Primary Application
Metalworking
Product Form
Roll
Size
101mm x 15.24m
Substrate
Carbide, Cast Iron, Ceramic, Chilled Cast Iron, Chrome Carbide, Chrome Oxide, Granite, High Nickel Alloy, HVOF, Nickel Based, Non-ferrous Metals, Oxides, Soft Metals, Stone, Tungsten Carbide
Width
4 in
Width (Metric)
101.6 mm
Product Details
  • Micron-graded diamond mineral delivers close tolerance precision finishes for medium stock removal
  • Enables slow abrasive feed rates and fewer steps which reduces abrasive costs
  • Polyester film backing allows roll to be used dry or wet with surface lubricants
  • An exceptional roll for thermal spray finishing of contour / complex shapes
  • Color coded to reduce the risk of error and mixing up abrasive grades

Designed with a strong polyester film backing and sharp diamond mineral, the 3M™ Diamond Microfinishing Film Roll 675L delivers fine finishes on hard metals like thermal spray coating, ceramics, carbides, chilled iron and granite.

LONG

3M™ Diamond Microfinishing Film Roll 675L
675L film allows target finishes to be achieved in fewer passes for greater productivity
High-quality Materials for Microfinishing
3M™ Diamond Microfinishing Film Roll 675L securely anchors micron-graded diamonds to a polyester film backing. Known for its strength and resilience, the polyester film backing makes it tough so that it can withstand heavy-duty finishing. The rolls are also color coded by grade to help you reduce the risk of selecting the wrong grade.

Waterproof Backing
Polyester film backings are also water resistant, so the abrasive may be run with a wet lubricant, which helps wash away unwanted swarf and debris and keeps the abrasive running cool. When used in roll form for a process like superfinishing, our 675L roll enables slow abrasive feed rates and requires fewer steps, because of its durability, which in turn can reduce costs.

Achieving the Desired Roughness Average
Many microfinished products require a specific Ra, or roughness average. To obtain the desired Ra when applying thermal spray coatings, we recommend following a unique sequence of steps tailored to the substrate. It is important for operators to consider these factors — Ra and substrate — when selecting the grade of film for this belt.

Overall, this micron-graded diamond abrasive delivers the desired finish without compromising the integrity of the substrate. Its strength and versatility make it a suitable abrasive for your finishing needs.

<strong class="MMM--txt_bold" "="">Superfinishing with 3M™ Diamond Microfinishing Film 675L
Sequential Surface Finishes Obtained (Ra Micro Inch)
Roll Material 74μ 45μ 30μ 20μ
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
 
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 0.5-1.0 inch/min
Pressure 20 lbs/inch width 10-40
Oscillation Alternating Moderate/None
Coolant Water with 4-8% synthetic coolant

Customer Reviews
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Large Volume Order

If you are considering a large purchase of this or other 3M Abrasive products our inside sales team is ready to help by providing additional information and options that our industrial customers typically seek when making abrasive procurement decisions. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we’ll do our best to prove that we should be your abrasive supplier of choice.


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