RE: aluminum welding[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: RE: aluminum welding
- From: "Lutz, James" <JLUTZ(--nospam--at)earthtech.com>
- Date: Mon, 4 Mar 2002 14:59:52 -0800
According to some information I read in the AWS Welding Handbook, fusion welding is out because of different melting temperatures for the metal, and the fact that neither metal is soluble in the other. If you attempt it, the result will be very brittle and subject to the usual problems associated with matching dissimilar metals--thermal expansion incompatibility, corrosion, etc.
The Welding Handbook says you can join them if the steel is first coated with a metal that is compatible with a suitable filler metal, but it doesn't sound like anything you can do very easily in the field.
My inclination would be to redesign the connection so you can bolt the pole on to the bell tower. You can isolate dissimilar metals with gaskets, washers, and bolt sleeves.
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