Characteristics and Applications of Brushes Used in Power Finishing Characteristics and Applications of Brushes Used in Power Finishing (Continued)
Operating Speed Range, sfpm
Brush Type
Description
Uses
Remarks
2000-4000
Removes buildup of aluminum oxide from work rolls in aluminum mill. Removes lime or magnesium coatings from certain types of steel. Burnishes hot-dipped galvanized steel to produce a minimum spangled surface. Need for cleaning rubber and fabric conveyor belts of carry-back material which would normally foul snubber pulley and return idlers. For removing oxide weld scale, burrs, and insulation from wire. Used in shipyards and in structural steel industry. For cleaning outside diameter of pipe and removing burrs and producing radii on heat exchanger tube sheets and laminations for stator cores. For removing feather grinding burrs and improving surface finish. Parts of 24 microinches can be finished down to 15 to 10 microinches. Parts of 10 to 12 microinches can be finished down to 7 to 4 microinches.
Radial, wide face, metallic fill
This brush is made to customer’s specifications. It is dynamically balanced at the speed at which it will operate. Performs cleaning operations that would cause a solid face brush to become loaded and unusable. Extremely fast cutting with maximum operator safety. No loss of wire through fatigue. Always has uniform face. Fast cutting wheel used on portable tools to clean welds, scale, rust, and other oxides.
Each brush should have its own drive. An ammeter should be present in drive-motor circuit to measure brushing pressure. If strip is being brushed, a steel backup roll should be opposite the brush roll.
When cleaning conveyor belts, brush speed is 2 to 3 times that of conveyer belt.
Designed for medium- to light-duty work. Brush face does not load.
Radial, wide face, strip (interrupted brush face) Radial, Cup, Flared End, and Straight End, wire fill elastomer bonded
3600-9000
Periodic reversing of brush direction will result in a brush life ten times greater than non-bonded wheels. Fast cutting action necessitates precise holding of part with respect to brush. Fast acting brush cleans large areas economically. Setup time is short.
8000-10,000
Cup, twisted knot wire fill
4500-6500 for deburring and producing a radius around periphery of holes.
Radial, wire or treated Tampico or cord
For use with standard centerless grinders. Brush will not remove metal from a cylindrical surface. Parts must be ground to size before brushing.
Follows centerless grinding principles, except that accuracy in pressure and adjustment is not critical. A machine no longer acceptable for grinding can be used for brushing.
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