Electron Beam Welding Components
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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

[High Voltage Cable]
(select to see larger image)
  • 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 

[AVR System]
(select to see larger image) 		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 

[Servo Drive Upgrades]
(select to see larger image)		 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

[EBW Console]
(select to see larger image) 		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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 Portable Pendant

[Portable Pendant]
(select to see larger image) 		PWT can refurbish and supply new portable pendants (fusion or electron beam) for the manufacturer's W2000 control. Our special button design will preclude the writing from wearing out. In addition, we can now repair all motherboards as we have complete stock of all of the IC Chips, even the old, obsolete, hard-to-get chips.

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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.
 
[vacuum system roughing valve]
(select to see larger image)
Shown at left is a 6" roughing valve.
 
[vacuum system gauges]
(select to see larger image)
 
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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   Vacuum Pumps 

PWT also offers high-quality pump reconditioning services.
 
Currently for sale on our shop floor are refurbished Stokes 212H-11 mechanical pumps (left), Stokes 412H-11 mechanical pumps (center), and Varian/CVC 20" diffusion pumps (right) that look and run like brand-new.
Stokes 212H-11 Pump Stokes 212H-11 pump
(select to see larger image)		 Stokes 412H-11 Pump Stokes 412H-11 pump
(select to see larger image)		 Varian/CVC 20" Pump Varian/CVC 20" pump
(select to see larger image)

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   Optics/Vapor Shield Holder 

[Optics/Vapor Shield Holder]
(select to see larger image)		 PWT has available a new vapor shield advancement holder for Electron Beam Welding Machines. This new-style unit will allow the operator to "jog" the vapor shield from contaminated glass to clean glass and back again with repeatable precision. The glass exposed to the vapor is 3/8" oval, as compared to 5/8" round in older models on the market, further increasing the amount of useable glass.
 
Our product will significantly increase viewing time before it is necessary to replace the contaminated glass disc, which may result in decreasing the frequency of venting the chamber.

 recommended for certain Sciaky Electron Beam Welding Machines  


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 Electron Beam Welding Rotary-Tilt Positioners 

Rotary-Tilt positioners for Electron Beam Welding Machines can now be supplied by PWT.
 
[EBW Rotary-Tilt Positioners]
(select to see larger image)
  • 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

[EB Welding Computer Control]
(select to see larger image)
See our Computer Control Feature Sheet for more information on a simplified version of our EBW System Control.
PWT can supply a Computer Control Retrofit for your EB Welding Systems and Automated GTA & Plasma Welding Systems:
  • The control is an Ethernet Ultralight 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 for an EB Welder or arc and wire transfer for a fusion welding system.
  • Parameters controlled for an EB Welder can be Beam Current, Filament Current, Beam Focus, High Voltage, and Deflection, along with all the of mechanical axes.
  • Parameters controlled for an automated fusion welding system can be High Current, Background Current, Arc Voltage, Wire Feed Speed, Pulsation, and Plasma Gas Flow, along with all the of mechanical axes.
  • The machine variables are analog and discrete inputs and outputs that control machine axes and electrical signals.
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.
For further information or a quotation on our new Ethernet Ultralight EBW or Automated GTA & Plasma Welding System Control, please contact our Sales Department.

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   Spare Parts 

[Spare Parts, Deflection Coil]
(select to see larger image)		 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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