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1. metallurgy question (score: 1): Author: "Glen Byrns" <grbyrns@ucdavis.edu>; Date: Tue, 7 Mar 2006 14:23:00 -0800; I'm going to be welding up a manifold from mild steel tubing, three short stubs of 1.25" going into a 'log' 2" in diameter. This will mate a turbo to a 1275. My question is, would the finished manifo; /html/spridgets/2006-03/msg00488.html (7,577 bytes)
2. Re: metallurgy question (score: 1): Author: "Glen Byrns" <grbyrns@ucdavis.edu>; Date: Tue, 7 Mar 2006 15:24:22 -0800; Hi Bill, I'll be using a single SU just like the POs original. Its been running that way for years now and its a good system. I just finished a welding class and was looking for an excuse to make som; /html/spridgets/2006-03/msg00489.html (7,889 bytes)
3. Re: metallurgy question (score: 1): Author: Ron Soave <soavero@yahoo.com>; Date: Tue, 7 Mar 2006 17:41:04 -0800 (PST); Hi Glen, Not sure what the geometry looks like, but that is likely where you can help most - I don't think the heat cycling will help at all, although it will likely weed out infant mortality in the; /html/spridgets/2006-03/msg00491.html (8,224 bytes)
4. Re: metallurgy question (score: 1): Author: "John Innis" <jdinnis@gmail.com>; Date: Tue, 7 Mar 2006 20:25:01 -0600; Not sure what the PO did, but cracking at the welds is usually caused by either insufficent penetration, poor toe blending or excessive heat. My money is on insuffficent penetration. Cut one of the f; /html/spridgets/2006-03/msg00492.html (9,333 bytes)
5. RE: metallurgy question (score: 1): Author: "Charles Christ" <cfchrist@earthlink.net>; Date: Tue, 7 Mar 2006 21:46:53 -0500; the process of heating to cherry red hot and allowing to cool is referred to as "normalising". it's required to relieve the odd difrences between the weld and surrounding metals. if it is not normal; /html/spridgets/2006-03/msg00493.html (8,837 bytes)
6. RE: metallurgy question (score: 1): Author: "Wm. Severin Thompson" <wsthompson@thicko.com>; Date: Tue, 7 Mar 2006 21:24:41 -0600; I've got a friend here in Wisco, (a Group 6 Boss 302 racer) that owns a restoration shop, and a business that manufactures large light poles... like for highways and parking lots. They have a huge ov; /html/spridgets/2006-03/msg00494.html (8,226 bytes)
7. RE: metallurgy question (score: 1): Author: "Chris King" <cbking@alum.rpi.edu>; Date: Tue, 7 Mar 2006 19:56:47 -0800; You know, this sounded a bit like annealing to me until I looked it up. Google is a wonderful thing! http://info.lu.farmingdale.edu/depts/met/met205/normalizing.html So chuck, when I weld up that cra; /html/spridgets/2006-03/msg00498.html (9,017 bytes)

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