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#62574 - 02/19/06 10:23 PM Cad Weld on steroids
gfretwell Online   content


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Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
Tonight the Discovery Channel has a show on the Cardinals stadium. They are exothermically welding train track rails together. The shot is a container of thermite stuff about the size of a picnic jug. Other than that it looks like the same deal.
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#62575 - 02/20/06 08:47 PM Re: Cad Weld on steroids
Celtic Offline
Member
Registered: 02/26/05
Posts: 361
Loc: NJ
You should see the grinder they use to clean up the rail!
It almost looks like a grinder attached to a sheet rock/lumber cart that rides the rail so they can grind the rail weld down smoothly and uniformly.

Yes, the shot is huge - so is the flash and resulting "mushroom cloud".
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#62576 - 02/21/06 05:07 AM Re: Cad Weld on steroids
Trainwire Offline
Member
Registered: 03/15/02
Posts: 360
Loc: Strasburg,PA,USA
You oughta see the gizmatron that they use when they resistance weld them.

I use tiny cadwelds when I electrically bond the rails together in the gate circuits.

This link has a brief history http://www.hollandco.com/Crane_Rail_Weld...f_crane_ra.html
TW

Edited because I always think of a better way to say it after I have posted

[This message has been edited by Trainwire (edited 02-21-2006).]
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#62577 - 02/21/06 07:21 AM Re: Cad Weld on steroids
C-H Offline
Member
Registered: 09/17/02
Posts: 1497
Loc: Stockholm, Sweden
I have a picture of a resistance welding machine that weld rails. It's big and there is metal spray everywhere...

{Edit: See picture below. The picture is from Shanghai Mountain Welding. I have their catalogue somewhere with a high quality print, but it is lost in big pile of things from suppliers who we aren't interested in.)

There is a busy railroad close to the office and last summer I watched two gentlemen termite welding the rails outside. This was in June/July and very warm (yes, warm in Sweden!) and they worked with bare torsos. Something doesn't go to plan and one of them grabs a big metal bar and start poking at the bottom of the container. BOOM! A cloud of molten metal surrounded the container and the guy. I was about to pick up the phone to get an ambulance but amazed watched him get back on his feet, seemingly unscathed.

I will never ever get into termite welding...



[This message has been edited by C-H (edited 02-21-2006).]
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