Extrusion Examples

If your extrusion operation has a relay logic system, a complete electronic system, or a mix of technologies, we have the ability to interface with it.

Basic Pump Control
We can convert an outdated manual, pneumatic, hydraulic or electronic control to a modern EPC (Electronic Pump Controller) that will interface with your relay logic system, or a PLC, and allow for all of the following:

• Unique pump commands for each machine function
• Pressure unloading to eliminate relief valve operation
• Electronic ramping to reduce system shock

Extrusion Press Controller
A more sophisticated system would consist of a controller engineered specifically for extrusion presses. It would contain the controller and the following additional features:

• Closed-loop Constant Ram Speed Control (+/- 0.1% of maximum ram extrusion speed)providing increased average extrusion speed and decreased scrap
• Pressure Unloading, which reduces relief valve operation, reduces the energy wasted (heat in the system) and minimizes the need to operate costly cooling equipment
• Pressure Rate Control, controls the rate of pressure build-up and limits ram extrusion speed which will decrease cycle time and increase die life. This feature is ideal for die trials and ceramic dies
• Horsepower Limiting
• Command Ramping
• Electronic Limit Switching
• Electronic Pressure Switching
• Interfacing with relay logic systems

Complete PLC Systems
A complete Programmable Logic Controlled system allows you to control and monitor all phases of the extrusion operation. Available features include:

• Closed-loop Constant Ram Speed Control (+/- 0.1% of maximum ram extrusion speed) providing increased average extrusion speed and decreased scrap
• Pressure Unloading, which reduces relief valve operation, reduces the energy wasted (heat in the system) and minimizes the need to operate costly cooling equipment
• Pressure Rate Control, controls the rate of pressure build-up and limits ram extrusion speed which will decrease cycle time and increase die life. This feature is ideal for die trials and ceramic dies
• Modem connection to Oilgear for assistance in trouble-shooting, making changes or making additions to logic
• Automatic Electronic Main Ram Limit Switching with position checks
• Electronic Pressure Switching for main ram
• Well organized program for fully interlocked press operation and not just a translation of relay logic
• Burp Cycle Control
• Butt discard detection - will disable container forward circuit if interference is detected
• Meets or exceeds ANSI B11.17-1982
• Main ram interference detection; ram forward circuit will be disabled in the event of misalignments or interference
• Operator adjustable butt length
• Interface with peripheral equipment
• Billet flash protection
• All I/O's including spares wired to terminals
• Minimum 15% spare I/O and panel space for future expansion
• Enclosure fitted for air conditioning
• All PLC outputs are individually fused and have blown fuse indicator lights
• Unique pump commands for each press function

Adding a modern man-machine interface touch screen replaces the vast majority of pushbuttons on your operator station.  It will display any variable that can exist in the PLC. For example: ram velocity, position, oil temperature, pressures, furnace zone temperature, dead cycle time, etc.
The operator can change set-up parameters with a touch of the screen.