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Title of Journal: Weld World

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Abbravation: Welding in the World

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Springer-Verlag

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DOI

10.1007/s10973-008-9175-z

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1878-6669

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Four Decades of Electron Beam Development at TWI

Authors: A Sanderson
Publish Date: 2013/02/07
Volume: 51, Issue: 1-2, Pages: 37-49
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Abstract

EBW equipment was first installed at TWI in the early 1960s Although of limited performance the deep narrow single pass welds made in 12 mm steel created a great deal of excitement and spawned an extensive higher power research and development programme This led by the early 1970s to an advanced high vacuum 75 kW 150 kV machine capable of 300 mm penetration in steel 450 mm in aluminium alloy and 125 mm in copper alloy The work set the trend for subsequent decades and notable further developments took place in both electron gun and power source design to meet the demands of industrial thick section applications Electron sources were improved to achieve longer cathode life even higher performance and greater beam stability Flashless intelligent switch mode inverters replaced conventional power sources Differentially pumped systems were devised to permit operation at pressures up to several millibar to offset the limitations of vacuum operation and both external and internal chamber guns were designed for a wide range of large applications Significant advances were also made in NonVacuum EBW with the establishment of a large 300 kV 150 kW facility and in recent times a special high frequency beam pulsing device was used to increase the penetration depth and reduce the width of welds made at atmospheric pressure In addition special high intensity guns were designed for material surface processing These are capable of producing innumerable macro and micro effects offering a whole new range of possibilities for metal bonding for aerospace automobile and medical applications EBW equipment and application highlights are described with particular emphasis on work carried out in the last few years


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Other Papers In This Journal:

  1. Effects of Surface Treatments of Galvanized Steels on Process Properties of Projection Welding
  2. Development of SnAgCu solders with Bi and In additions and microstructural characterization of joint interface
  3. Spatter And Fume Reduction In Co 2 Gas- Shielded Arc Welding By Regulated Globular Transfer
  4. Impact of the Qualification of Personnel in the Manufacturing Industry
  5. Welder-optimized CJP-equivalency welds for tubular connections
  6. In situ strain evaluation during TIG welding determined by backside digital image correlation
  7. Economic Orthogonally Welded Stiffening of an Uniaxially Compressed Steel Plate
  8. Henry Granjon Prize Competition 2006 Winner, Category B “Materials behaviour and weldability” The Influence of Molybdenum on the Microstructure of Stainless Steel Welds
  9. Henry Granjon Prize Competition 2010 Winner Category a: “joining and Fabrication Technology” Study On Friction Stir Spot Welding Of Dual-Phase High-Strength Steel Sheets
  10. Metallurgical characterization of the 5083H116 aluminum alloy welded with the cold metal transfer process and two different wire-electrodes (5183 and 5087)
  11. The Influence of Ultrasonic Impact Treatment on Fatigue Behaviour of Welded Joints in High-Strength Steel
  12. Mechanical-Technological and Fracture Mechanical Properties of the high Grade Pipeline-Steel X80 with Results of Different Pipeline-Projects
  13. Development and Application of the 3-Electrode MAG High-Speed Horizontal Fillet Welding Process
  14. Feasibility study of laser welding assisted by filler wire for narrow-gap butt-jointed plates of high-strength steel
  15. Laser brazing of TiAl intermetallic compound using precious brazing filler metals
  16. An Investigation of Failure Types in High-Strength Steel Resistance Spot Welds
  17. Elastic Plastic Fe Analyses of Sub Models of Connections in Steel Framed Moment Resisting Buildings Under Earthquake Loading
  18. Development of a Welding Monitoring System for In-Process Quality Control of Thick Walled Pipe
  19. A new approach for MIG/MAG cladding with Inconel 625
  20. Three-dimensional finite element simulation of welding residual stress in RPV with two J-groove welds
  21. Investigation of Watergas Welded Joints for Future Decisions Concerning Old Hydropower Stations

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