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Electron Beam Welding Components/Upgrades
Improve your EBW System's Performance with our Technology
PWT's EBW products include vacuum system components (gauges, pumps, valves,
incl. re-conditioning), servo drive components (motors, ball screws, encoders, limit
switches, etc.), High Voltage System components (incl. AVR, HV Cables), gun components, scanning equipment, x-ray
survey equipment, optics systems, and miscellaneous printed circuit board/electronic
components, and computer control.
High
Voltage Cable
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- PWT refurbishes internal and external high voltage cables used in certain Electron Beam Welding Systems.
- The refurbished HV Cable would contain new silicon cable insulation and some metal parts.
- We will replace defective portions of the ends/connectors, including molding in a whole new center section, as necessary.
- PWT can also supply complete, new High Voltage Cables for your EB Welder.
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Solid
State AVR System
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PWT provides Single Transistor AVR Power Packs, rated for 15KW, 30KW, & 42KW, for certain
Electron Beam Welding Systems. PWT's transistor pack uses one IGBT (Isolated Gate Bridge Transistor),
the latest generation in power transistors. Our system is a reliable replacement for Multiple Transistor
AVR's with significant improvements in power control and over-current protection. The IGBT is rated at
300A continuous current and 1200V collector, emitter voltage. The controller was designed with special
drive circuits for the high power application. An isolated AVR current feedback provides fast, reliable
protection for the power transistor, HV transformer, and diodes. PWT's solid state AVR System will
eliminate long down time due to troubleshooting and searching through many transistors attempting to
locate a defective one.
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Servo Drive Upgrades
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PWT can retrofit your automated welding system with reliable, state-of-the-art servo drive amplifiers.
These new drives have many more fault lights than the old, obsolete drives, which make it easier for
maintenance personnel to diagnose an error condition.
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Electron Beam Welding Console
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PWT's Electron Beam Welding console, used on certain manufacturer's EBW machines,
is lighter and more mobile than existing systems which makes it
easier for the operator to move around to the different viewing
windows. The console consists of an enclosure, cooling fans, CRT,
keyboard, buttons, nameplates, XY monitor, and pendant. |
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Vacuum
System Components
Using off-the-shelf technology and PWT's vacuum system experts, PWT can integrate many vacuum
gauges, pumps, valves, and other components to provide a reliable vacuum system for your EB Machine.
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On the right we show two new vacuum gauges. PWT can supply vacuum gauge systems for either the chamber, the gun, or both, as applicable. PWT's gauges incorporate a modular design that has proven reliable and easy to calibrate. We also provide an RS232 serial port module so the gauge can be programmed to fit your specific system requirements and inquiries. The gauges shown were used on a Sciaky EB Welding System with an external gun and interfaced to the existing CNC control.
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(select to see larger image)Shown at left is a 6" roughing valve. |
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PWT also offers high-quality pump reconditioning services.
Currently for sale on
our shop floor is a refurbished Stokes 212-H11 mechanical pump (right) that
looks and runs like brand-new. |
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Optics/Vapor
Shield Holder
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Electron Beam Welding Rotary-Tilt Positioners
| Rotary-Tilt
positioners for Electron Beam Welding Machines can now be supplied
by PWT. |
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- The new vacuum compatible positioner can be retrofitted to
existing EBW systems and integrated to the computer control.
- The positioner is a uniquely designed, low-profile positioner,
which allows the user to increase their chamber's working envelope.
- The highly accurate, repeatable positioner includes heavy-duty
gearing, precision faceplate, motors, encoders for position
& velocity feedback, home & limit switches, and the
necessary cabling to connect to the machine's existing drives.
- Installation is provided.
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Computer Control NEW for 2008
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Introducing PWT's New Computer Control for your EB Welding Systems:
- The control is a Digital Signal Processor (DSP) based NC Controller specifically designed for multi-axis control integrated with machine and process variables.
- The process variables control electron beam power.
- Parameters controlled can be Beam Current, Filament Current, Beam Focus, and High Voltage, along with all the of mechanical axes.
- The machine variables are analog and discrete inputs and outputs that control machine axes and electrical signals.
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| The NC controller is supplied by a company that has supplied numerous controls for the metalworking industry. Many spare parts are off-the-shelf and will be less expensive than a control that is based on a more complex architecture.
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Spare Parts
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PWT has many spare parts (Focus Coil and Deflection Coil pictured) available for Sciaky Electron Beam Welding Systems. Please call for availability and pricing.
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