this gives an idea of thermit welding of 60 kg rail. (deepak verma)

Date: 2009-03-10
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SDC10258
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Make SAMSUNG TECHWIN CO., LTD. Model Samsung S1060
Aperture Value f/4.4 Color Space sRGB
Exposure Program Program Flash No Flash
ISO 50 Metering Mode Multi-Spot
Shutter Speed Value 1/150 sec Digital Zoom Ratio 1
Date/Time 2009 Mar 10 14:04:01 +0000
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@ Karthik..

Railway track is a flexible (floating) structure not like a building which is attached rigidly to the ground. So in a track the stresses developing due to expansion/contraction are absorbed by sleepers (rather a set of sleepers)...
Posted by Abhishek Gopal (guest) on 2009 May 30 19:05:50 +0100
lot of thermite welding videos are available in you tube, pls check out one among that thru this link http://www.youtube.com/watch?v=nR6K90cR8Lg
Posted by manoj (guest) on 2009 May 29 17:31:57 +0100
by providing SEJ(switch expansion joint) from one stztion to next ,we minimizing the variations due to temp.
Posted by deepak verma (guest) on 2009 May 29 14:50:22 +0100
@ Karthik: By adding gaps but at large distances!
Posted by M S M Saifullah on 2009 May 29 14:07:06 +0100
Informative image. Do you have an image from the other side of the rail? Or even top of the rail? Please email me the images of thermit welding at msm_saifullah@yahoo.com
Posted by M S M Saifullah on 2009 May 29 14:05:30 +0100
If the gaps are welded, how does expansion and contraction due to variations in tempratures are taken care?
Posted by k s karthik (guest) on 2009 May 29 13:02:26 +0100
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