Electron beam welding-working chamber, Mechanical Engineering

Assignment Help:

Working Chamber of EBW


The chamber is usually rectangular in shape and has heavy windows to permit viewing the work. Both high voltage machines and low voltage machines are available with work chamber that can be evacuated to high vacuum (or partial vacuum (10-4).

The basic requirements of vacuum is the electrons need to flow in a beam from the emitter to the target unimpeded by the presence of any gas molecules that may cause scattering and slow down of the beam. The source of electrons is a tungsten filament heated to around 2200 °C. At this temperature, the filament will oxidise very quickly because of the presence of oxygen in air. The pumping equipment is usually completely automatic once the set up has been completed.


Related Discussions:- Electron beam welding-working chamber

Corrosion resistance of the austenitic stainless steels, The corrosion resi...

The corrosion resistance of the austenitic stainless steels (within the concentration and temperature conditions described above) relies on the formation and stability of a passive

Internal and external diameters - solid shaft, Internal and external diamet...

Internal and external diameters - solid shaft: Two shafts are of the similar material, length & weight. One is solid & of 100 mm diameter, the outer is hollow. If hollow shaft

Explain arc-welding processes, Arc-Welding Processes Arc-welding incl...

Arc-Welding Processes Arc-welding includes those welding processes wherein heat required for welding is derived from an arc powered by electrical energy, may be AC of DC as s

Determine the origin of step, Determine the Origin of STEP Considerable...

Determine the Origin of STEP Considerable progress has been made in vector data exchange over the recent past. Initially, some CAD/CAM vendors offered direct translator softwar

Handling tools and equipment for skid, Q. Handling tools and equipment for ...

Q. Handling tools and equipment for skid? Lifting or pulling and provisions for transportation of skid shall be in accordance with GS-904-0103, other relevant parts of contract

Disc clutch friction thickness, Disc clutch friction thickness: Check disc...

Disc clutch friction thickness: Check disc clutch friction thickness which should be minimum of 2.6 mm.

Laser weld overlay i cladding, LASER WELD OVERLAY I CLADDING This proce...

LASER WELD OVERLAY I CLADDING This process brings the metal surface to a substantially higher temperature than in the heat treating process and results in a thin molten surface

Direct and bending stress, a masonry pier 3m*4m supports vertical load of 6...

a masonry pier 3m*4m supports vertical load of 600kn at point (1.2,1),find stresses at corner of pier

Importance of molliers diagram, Describe the key terms i. Write two diff...

Describe the key terms i. Write two differences between turbine and boiler. ii. Write importance of mollier's diagram iii. Compare the rankine cycle with carnot cycle in k

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd