Bhabha Atomic Research Centre has developed an Electron Beam Welding machine that can produce deep penetration welds with very log mechanical distortion. This reduces the post-weld machining costs.
BARC says that the EBW is also useful in welding thick sections in a single pass. It is useful for welding circular seams with 280 mm maximum outer diameter, and linear seams with 200 mm maximum length. It is good for welding refractory and high strength materials like Niobium, Zircalloy and maraging steel.
The machine is particularly useful for welding of nuclear, aerospace components, automotive and micro electronics industries. “EBW can be the last step in the manufacturing sequence,” says BARC.
How it works is like this: The kinetic energy of the electrons changes into heat energy which melts and fuses the work piece metal. Welding is often done in a vacuum environment to prevent dispersion of the electron beam.
The manufacture of EBW machine is a hi-tech process and calls for high level of skilled manpower. But if you can make it, there are good business prospects.
For further details contact:
Technology Transfer and Collaboration Division
Bhabha Atomic Research Center
Trombay, Mumbai – 400 085