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- Jan 22, 2011
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One thing I have to respectfully disagree with Mike on, and that's using a neutral flame. I was taught to use a slightly oxidizing flame when brazing steel and CI and a stronger oxidizing flame when gas welding brasses and bronze alloys. Not that you can't do an adequate braze job with a neutral flame, but the temp is higher with an oxidizing flame and you want to leave as little carbon contamination when welding the brass family.
Note though, the strong oxidizing flame temp is too high for welding steel. Your puddle will boil, the carbon in the base material will combine with the oxygen and become brittle and subject to cracks.
There are many write-ups online about it. I'm going from what school taught a couple of years ago , and listening to a lot of old grumps, one of them being my grandad.
Note though, the strong oxidizing flame temp is too high for welding steel. Your puddle will boil, the carbon in the base material will combine with the oxygen and become brittle and subject to cracks.
There are many write-ups online about it. I'm going from what school taught a couple of years ago , and listening to a lot of old grumps, one of them being my grandad.