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Easy Aluminum Repair/Farbrication
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Hammered
Originally posted by DMorris View Post
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DMorris
But doesn't this material work by sinking heat away and dissipating it to the atmosphere so as to keep the surrounding material cooler?
What I was thinking was that if there was too much of a thermal gradient across the part, it becomes difficult to raise the temp in the work zone in a controlled way.
By bringing the temp of the whole part to a temp closer to the working temp of the bonding material, it becomes easier the add just enough heat in the work area to get the bonding material to flow.
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Hammered
Originally posted by DMorris View PostBut doesn't this material work by sinking heat away and dissipating it to the atmosphere so as to keep the surrounding material cooler?
What I was thinking was that if there was too much of a thermal gradient across the part, it becomes difficult to raise the temp in the work zone in a controlled way.
By bringing the temp of the whole part to a temp closer to the working temp of the bonding material, it becomes easier the add just enough heat in the work area to get the bonding material to flow.
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DMorris
OK, Hammered. I'll bow to your experience but I'm still scratching my head about the physics.
Thanks for the info though!
Best, Don
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mighty13d
materials like cast iron and high yield steel require preheating. if not... the weld snaps in two... Thin material would be the best for totally local heat, if you're working with thicker stuff and can throw it in the oven to help, by all means, do it. just don't heat it too much and warp it like was said. and don't rapidly cool it either. that can warp it too
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