Welding cast iron

Matty F · 2011-07-14T09:44:57+00:00

I cut up a piece of cast iron to fit the missing lug on this pipe:'s a one inch hole in the other lug.The pipe to start with: expert welder will weld the lug on. I suppose he will have togrind bits off the new piece in order to weld right to the middle.I'll drill a new hole after the welding is finished.I've not seen cast iron welded before. Anything to worry about?

Welding cast iron

Jul 14, 2011 202 Replies

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Andy Dingley 14 years ago

Early TBDs (torpedo boat destroyers) of the early 1890s. This is difficult, as there were several building yards and a vast array of boiler designs at this time, often obscure water-tube inventions. There seems to be little written distinction between the launch-type and the locomotive-type "locomotive" boilers - you have to look at the builder's plans. Havock (Yarrows) was one with a dual-firedoor Belpaire, I think Fervent, Charger, Dasher, Hasty & Zephyr might have been too. Lyon's "The First Destroyers" is a very good read on the development of turbine propulsion around this time, although it doesn't go into as much detail on boilers as you or I might like.

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Andy Breen 14 years ago

You're entirely right. I can't believe that I missed that one, given that (a) it's a period/area that interests me and (b) I have a copy of Lyon on my shelf. A quick inspection of the drawings revealed that Yarrow did, indeed, use a true locomotive-type boiler in their early TBDs. I must now start checking to see whether they'd done the same in their later, larger TBs or in any of the TGBs they'd been responsible for.

Thanks for that. I most heartily apologise for my unforgivable mistake.

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Andy Dingley 14 years ago

Henry Hoy's batch of the L&YR Class 30.

I've done some wiki stuff about them, under the Hoy article. Ahrons' ''Development of British Loco Design'' has some photos, if I get time to scan them. Strange thing is that they were a response to a firebox problem that he'd caused himself, by specifying a new, and brittle, alloy for the firebox rod stays.

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