From: uniquemachine@cybcon.com
Date: Thu Dec 02 2004 - 14:01:50 PST
Spin casting (or centrifugal casting) can be very useful. It can
leave a hollow center to save material and minimize work by
leaving the center open like a piece of tubing that is undersized on
the inner measurements, which can then be bored to the correct
dimensions.
Jon
On 2 Dec 2004, at 0:56, everette wrote:
> Do not take this as written in stone but I have read somewhere that repair
> ships carried spare barrels for the smaller guns. Back in olden times
> (1958-59) I was stationed in DC, for some reason I had to go to Washington
> Naval Yard and they had in storage replacement barrels for modern
> battleships
>
> Did you ever know how big gun barrels are made? I have been told they had a
> spinning mold that they poured the molten steel in as it was spinning and
> then when it cooled they bored out center, logic being the heavier stronger
> steel was forced to the outside as it spun.
>
> Now feature this - a mold large enough to cast a 16 inch rifle barrel for a
> battleship - spinning while tons of molten steel were poured in it.
>
> Much less the lathe it took to bore it out.
>
> However I do remember few years back a DRMO had a lathe for sale with 50
> foot bed, 72 inch centers, do not remember weight but I do remember it was
> in 5 pieces.
>
> The DRMO in Memphis had a "upsetter" for sale few years back, a device that
> tank turret was placed in and struck with a giant hammer to "align"
> molecules in steel. "Hammer" was driven by hydraulics and bid request
> stated there were a few thousand gallons of oil in it.,
>
>
>
>
> ----- Original Message -----
> From: "Fred Martin" <mung@in-touch.net>
>
> I have a question for most anyone who wants to answer or give an
> educated guess...If an artillery piece had the barrel shot out (as in
> worn out)...do they ever re-sleeve them to bring it back in tolerance?
> Or is it new barrel time? I know of one ship I was on shot over 10,000
>
> Fred Martin
>
>
>
>
> ===Mil-Veh is a member-supported mailing list===
> To unsubscribe, send e-mail to: <mil-veh-off@mil-veh.org>
> To switch to the DIGEST mode, send e-mail to <mil-veh-digest@mil-veh.org>
> To reach a human, contact <ack@mil-veh.org>
>
This archive was generated by hypermail 2.1.4 : Sat May 07 2005 - 20:38:50 PDT