From: REMOVE_THISdwilkins@means.net (Don Wilkins)
Newsgroups: rec.crafts.metalworking
Subject: Re: Why Brazing??
Date: Sat, 09 Jan 1999 01:47:13 GMT

On Fri, 08 Jan 1999 09:39:11 -0500, Ted Edwards
<Ted_E@bc.sympatico.ca> wrote:

>Is this one of those application where TIG and SS 312 or 316 rod might
>be in order?

Absolutely not.

Your best chance of success is with pure nickel rod, preheat the
piece, and slooooow return to room temperature, and either a lot of
experience or a hell of a lot of luck.

The problem is cast iron has a high carbon content. When the melt
solidifies you need some place to put this carbon. Nickel will soak up
some of this carbon without creating all sorts of mismatches in
expansion.