Types of electron beam welding gun, Mechanical Engineering

TYPES OF ELECTRON BEAM WELDING GUN

 

Diode (Cathode - anode) Gun: In this gun, the beam shaping electrode and the emitter are both at the same electrical potentials. These are, of simple construction but the only way to control beam current is by varying either the high voltage or filament temperature.

Triode (Cathode - grid - anode) Gun: The most widely used gun is the thermionic triode gun. The beam shaping grid can be biased to a slightly more negative value than the emitter in order to control beam current flow. In this case, the emitter alone is called cathode, focused with a spot diameter of less than 0.005 inches. Both of the gun types discussed above have directly heated filaments or cathodes, that is heated by passing an alternating or direct current (AC or DC) through it. Another method of cathode heating is indirect heating of these filaments by bombardment from another cathode known as the primary cathode.

Posted Date: 9/17/2012 6:57:16 AM | Location : United States







Related Discussions:- Types of electron beam welding gun, Assignment Help, Ask Question on Types of electron beam welding gun, Get Answer, Expert's Help, Types of electron beam welding gun Discussions

Write discussion on Types of electron beam welding gun
Your posts are moderated
Related Questions
the velocity of a particle moving along x axis is defined by v=kx^3-4x^2+6x where v is in m/s,x in m and k is a constant .if k=2 compute the acceleration when x=2m

Reinforced Earth Walls: When constructing ROBs, fly-overs and underpasses, it is often not possible to provide sloped earthen embankments for the approaches, which are as hig

Necessity of Tyres To supports the motorcycle load. To provide cushion against shocks. To allow smooth handling of motorcycle. To transmit driving and braking

Evaluate the stream function at point (2, 3) for a two dimensional flow given by U = 5x 3           v = - 15x 2 y Evaluate the velocity potential function for a two dimension


Course content on design, CAD modeling, linkage synthesis, and creating proper engineering drawings is the focus for this project. In terms of design, a logical starting point wou

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Hydraulic calculations are carried out by both Process and Mechanical Engineering. Generally speaking, Process Engineering will initiate many hydraulic calculations for piping sys

What is ignition angle offset

Difference between direct and shear stress