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Interesting. I do this for a living in the UK. Only differance being i keep the torch lighted to ignite the sparkler before turning it off!!
Posted by Paul Harris on May 27, 2008
I would never have guessed how they bonded ribbonrail together. What is that stuff? Epoxy? Liquid steel? That's very interesting to say the least. Thanks for that.
Posted by on May 28, 2008
The process is called thermite welding. It's nothing more than aluminum and iron oxide in the right proportions. You touch off the mix, and the aluminum combines with the iron ore, strips the oxygen away, and leaves molten iron as the byproduct. Pretty efficient really. But once it's started, you're not stopping it until it's done.
Posted by interesting on November 21, 2008
It's great that you posted this video. Would you consider posting more video related to the process of making field welds? It would be very informative to see video of the entire process, beginning with rail cutting and proceeding through surface grinding of the completed weld. Thank you for posting!
Posted by MATh on December 23, 2008
How wide a gap between the rail ends does the thermite fill?
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