Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Post: #1

In electron-beam machining (EBM), electrons are accelerated ..
In electron-beam machining (EBM), electrons are accelerated to a velocity nearly three-fourths that of light.

The process is performed in a vacuum chamber to reduce the scattering of electrons by gas molecules in the atmosphere.

The stream of electrons is directed against a precisely limited area of the workpiece;

on impact, the kinetic energy of the electrons is converted into thermal energy that melts and vaporizes the material to be removed, forming holes or cuts.

EBM equipment is commonly used by the electronics industry to aid in the etching of circuits in microprocessors.
Post: #2
Electron Beam Machining (EBM) and Laser Beam Machining (LBM) are thermal processes considering the mechanisms of material removal. However electrical energy is used to generate high-energy electrons in case of Electron Beam Machining (EBM) and high-energy coherent photons in case of Laser Beam Machining (LBM). Thus these two processes are often classified as electro-optical-thermal processes.
There are different jet or beam processes, namely Abrasive Jet, Water Jet etc. These two are mechanical jet processes. There are also thermal jet or beams. A few are oxyacetylene flame, welding arc, plasma flame etc. EBM as well as LBM are such thermal beam processes. Fig. 9.6.1 shows the variation in power density vs. the characteristic dimensions of different thermal beam processes. Characteristic length is the diameter over which the beam or flame is active. In case of oxyacetylene flame or welding arc, the characteristic length is in mm to tens of mm and the power density is typically low. Electron Beam may have a characteristic length of tens of microns to mm depending on degree of focusing of the beam. In case of defocused electron beam, power density would be as low as 1 Watt/mm2. But in case of focused beam the same can be increased to tens of kW/mm2. Similarly as can be seen in Fig. 9.6.1, laser beams can be focused over a spot size of 10 – 100 μm with a power density as high as 1 MW/mm2. Electrical discharge typically provides even higher power density with smaller spot size.
Post: #3
to get information about the topic "electronbeam machining " full report ppt and related topic refer the link bellow


Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Tagged Pages: high energy fluid jet machining seminar report,
Popular Searches: ultrasonic machining disadvantages, micro machining technology, topic on transfer machining, adaptive control machining, chemical machining wikipedia, electrochemical machining animation, hybrid unconventional machining,

Quick Reply
Type your reply to this message here.

Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Cutting tool (machining) seminar surveyer 2 2,393 29-11-2012 02:24 PM
Last Post: seminar details
  Electro Discharge Machining computer science crazy 2 2,844 17-10-2012 02:21 PM
Last Post: seminar details
  Adaptive Control machining full report project report tiger 2 5,036 17-10-2012 01:55 PM
Last Post: seminar details
  ELCTRON BEAM MACHINING computer girl 0 912 07-06-2012 11:26 AM
Last Post: computer girl
  Magneto Abrasive Flow Machining computer science crazy 13 12,515 14-03-2012 11:42 AM
Last Post: seminar paper
  WATERJET MACHINING full report seminar class 11 6,327 09-01-2012 09:36 AM
Last Post: seminar addict
  high speed machining full report project report tiger 5 10,669 20-12-2011 09:42 AM
Last Post: seminar addict
  abrasive jet machining suraj shetty 7 8,117 08-08-2011 11:06 AM
Last Post: seminar addict
  ELECTROCHEMICAL DISCHARGE MACHINING smart paper boy 0 1,726 21-07-2011 03:54 PM
Last Post: smart paper boy
  Ion Beam Machining FULL REPORT seminar class 0 1,932 12-05-2011 12:25 PM
Last Post: seminar class