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Posted by Franzİ [4.156.234.83] on Wednesday, February 10, 2010 at 22:07:15 :
In Reply to: Re: Then by your standards, there ain't no such thing as brazing posted by Kaegi [24.113.81.122] on Wednesday, February 10, 2010 at 15:26:50 :
In many cases brazed joynts have superior strength to welded. On manifolds welding with high nickle alloy will more often than not embrittle the parent metal and make the problem worse. Yellow brass on manifolds offers an additional benefit, the ability to stretch and eliminating the shrinkage often associated with a welded joynt.
Back in the days of my misspent youth when war surplus piston rings were abundant, and I tended fire for a 4 hour day for a 5˘ Coke for the local weldor/smith I learned a lot about O/A welding of castings using piston rings for filler. It was a few more years till I learned I was being overworked for the compensation, but I also came away with knowledge. One thing I really learned was to NEVER grind a casting prior to trying to weld or braze it. Chipping works a hell of a lot better.
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