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WRC Video #7 - Forged Seams

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Uploaded by on Jun 2, 2011

What is a forged seam? Were boilers built with forged seams? At one time they were. John Rimmasch takes a look at the original boiler from his 1904 Cagney Class D locomotive and shows us the evidence of a forged seam in the boiler. This forged seam, among other things, prevented this boiler from ever being used again.

This video was made in response to a discussion on the Smokstack.com forum. http://www.smokstak.com/forum/showthread.php?t=90346

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Autos & Vehicles

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  • Seamless tube does not have a seam at all. That tubing is created by piercing a hole into a solid round bar of steel.

  • very interesting, John...I have seen a lot of butt strap boilers with gas welded seams that had the straps rivited on for the structural strength. As far as I know, no traction engine maker used a forged or fusion welded seam.

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