CLEAN/PREPARE YOUR PARTS UP TO 90 TIMES FASTER.
Harperizer™ The High Speed, High Precision Machine That Started The Concept Of High Energy Mass Finishing. When first introduced more than 30 years ago by Harper Surface Finishing Systems, Inc., the process of "Harperizing" revolutionized the finishing industry and began a new technology of high energy mass finishing. The term "Harperizing" is synonymous with this process and Harper Surface Finishing Systems, Inc. continues to lead the way into the future of Centrifugal Barrel Finishing. Today more than 3000 Harperizers are in service around the world, a testament to their versatility and widespread acceptance.
Innovations such as automated material handling systems, State-of-the-Art electronics and PLC controls have kept the "Harperizer" at the forefront of the mass finishing industry.
Eliminates Hand Finishing:
Harperizers can eliminate hand finishing, increase your productivity and produce a more uniform, consistent finish. Our Technical Department can assist you in developing the proper cycle times, G Force, and media selection.
Low Maintenance:
All Harperizers are engineered to meet the demands of industrial environments. Ease of maintenance and serviceability will provide years of dependable operation. |
Very High Speed:
Typical processing time of 5 to 30 minutes reduces per part cost as well as inventory, lead times, and required floor space.
Very High Precision:
Tolerances as low as .0001 inches can be maintained.
Extremely Fine Micro Finishes:
Surface finishes of 1 micro inch are achievable.
Gentle Action:
Parts are continually encased in media during "Harperizing" producing an aggressive, yet gentle action |
Wide Applications:
- Aerospace
- Automotive
- Electronic
- Metal Fabrication
- Medical
- Jewelry
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Harperizer centrifugal barrel finishing machines can impart a high compressive stress in the surface layer of components. This increases resistance to fatigue failure. Harperizers can achieve greater fatigue strength at a lower cost per part than any other process
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SUMMARY OF PROCESS:
In the "Harperizing" process, a flywheel turret rotates at a high speed while the individual drums are counter rotated. This places the mass under compression and generates friction against the drum wall. An abrasive action gently rubs the media against the parts while under the high "G" force compression.
 The sliding action is gentle, uniform and eliminates tumbling, cascading, or the pile up of media parts.
The end result of this action is a greatly accelerated process. Harperizing can be 90 times faster than conventional barrel tumbling and 30 times faster than vibratory finishing. Even the most fragile parts may be Harperized without damage or distortion.
CONFIGURATIONS:
"Harperizers" are available in various sizes and configurations including vertical or horizontal axes, and with fixed or removable drums. Capacities range from less than one cubic foot to over 30 cubic feet. "Harperizers" can be equipped with automated material handling systems to convey, separate and load parts and media. They can accommodate parts as tiny as .003" diameter or massive forgings weighing over 250 Ibs.
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STANDARD FEATURES:
- Two snap in polyurethane lined drums.
- Nominal dimensions 12” by 12” by 12” (each drum).
- Approximately .6 cubic feet per drum, air variable speed between 5 and 25 G’s infinitely adjustable.
- Air interlocked turret brake system.
- “V” belt turret drive operating through a jack shaft.
- Chain and sprocket drum drive in a sealed oil bath.
- 230/460 Volt 60 Cycle, 5 HP motor.
- Certified NEMA-12 enclosure.
- Fast/slow speed sequence with timers and process cycle selectors.
- Main guard safety interlock and vibration switch mechanism.
- Air operated turret and drum brakes with built in fail safe system.
AVAILABLE OPTIONS:
- Portable material handling unit with built-in vibratory screen.
- Electronic variable speed and optional PC controller.
- Round drum liners.
- Grooved liners for divider plates and individual compartments.
- Complete spare parts kit.
- Four barrel configuration also available.
FUNCTIONS:
- Descaling
- Stress Relieving
- Part Deflashing
- Smoothing of Surfaces
- Generating Edge and Corner Radius
- Generating Compressive Stresses
- Deburring
- Material Removal
- Surface Cleaning
- Surface Refinement
- Achieving High Micro Finish
- Pre-Plate and Pre-Paint Finish
SEND US YOUR PARTS OR PRINTS
With over 3,000 Harperizers in service, our engineers can pick the right machine and th< right process to meet your requirements. Send us your parts or prints and we will improve your uptime. |