Posted by Billy NY on October 17, 2011 at 13:23:57 from (74.67.3.54):
In Reply to: OT: Welding posted by oldtanker on October 17, 2011 at 10:10:28:
R.G.LeTourneau, was a pioneer in the early days of arc welding. It was part of his development of earth moving equipment and attachments for track type tractors, mainly caterpillar, towed scrapers etc. all the wire rope/cable operated type equipment. "Tournaweld Rods" was an electrode offered by LeTourneau, which I believe R.G. had a hand in developing, his biography/story is an interesting one, especially about the development of the equipment they manufactured.
In 1940, 1941, 1942, 11,461,089 lbs. of TournaWeld was manufactured, mostly for use and repair of construction equipment. Now that is apples to oranges for ship hulls, but arc welding had been well established prior to WWII, but maybe not in ship building, ship plate joinery if that is a good way to describe it.
My grandfather was navy, WWI, then merchant marines WWII, chief engineer. German U-boat torpedo'd his ship, they were in the Atlantic shipping lanes supplying the European Theater, the blast sent him into the ocean burnt, but alive, ship sank and him and some others were floaters until their rescue, that would have been a big issue/concern of these men, my father may recall him talking about ship building, welded vs. riveted type hulls.
In the lab many floors below in a high rise I worked in, they have 6" steel ship plates, that date before the nuclear era, set up in a winding pattern, keep taking left turns, so they can keep all extraneous radiation out for experiments that require absolutely no radiation, the building was constructed in the late 60's, those plates would take some serious heat and passes to fuse together.
There is a war dept tech manual TM-9-2852, dated 3 June 1943, in my collection, that sure looks like they had quite a bit of established information on welding at the time, must have eventually been deemed suitable to replace riveted connections, given the timeline, must have taken quite some time to perfect its use on ships, hence the worry about performance by the end users LOL!
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