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Partech’s Hydraulic and Pneumatic Device Capabilities
- Including components used in:
- Hydraulic Pumps
- Hydraulic Motors
- Servo Valves
- Proportional Valves
- Electric Displacement Control Valves
During a recent “bake off”
between competing processes at a major hydraulic valve manufacturer,
Partech fineblanking was selected
over stamping, machining, powdered metal, and investment casting.
Fineblanking was not only cost effective, but also provided
the highest quality results.
One reason for our success in the hydraulic
arena is our low cost structure. Another is that we have access
to the full array of secondary processes required to produce
valve plates, pole pieces, pivot plates, etc., including double
disc grinding, milling, tapping, heat-treating, brazing, broaching,
and annealing.
Here are some examples of our work,
and the benefits provided to our hydraulic device customers.
| Type of part |
Part function |
Part specification in inches |
Cost and Quality Benefits |
| Pole Piece |
Part of the magnetic circuit
of the valve |
Flatness .005 Form height. .002 |
Cost - Surface features added at
no cost include embossing and forming. Quality -Full Cpk
analysis of critical
dimensions. |
| Pivot Plate |
Beryllium Copper Pivot used in control
valve |
Profile tolerance .005 Flatness .001
True position .004 |
Cost - Lowest cost process option.
Quality - Valve linearity improved by maintaining close
tolerances. Most consistent process piece-to-piece and
lot-to-lot. |
| Wear Plate |
Bimetal Plate used in hydraulic pump |
Flatness .005 |
Cost - Multiple machining operations
eliminated by fineblanking. Quality - Improved flatness
aided secondary grinding operation. |
Gasket |
Self Retaining Gasket |
Flatness .001 16 micro finish, profile
tolerance .001 |
Cost - Eliminated a grinding operation.
Quality - flatness and surface finish ensured a leak-free
seal. |
| Lever |
External Pump Speed Control Lever |
Internal profile .002 |
Cost - Fineblanking eliminated forming
and broaching operations. Quality - Improved true position
of
critical features. |
| Orifice |
Precision Orifice for pneumatic device |
Hole tolerance .001 |
Cost - Fineblanking eliminated secondary
reaming operation. Quality - Improved consistency of hole
diameter from Cpk=1.1 to Cpk =2.7 |
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Partech’s
Hydraulic and Pneumatic Devices
