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Tool Talk Discussion Forum

Re: Rosebud tip

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Author  [Modern View]

03-01-2013 15:32:36

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[quote="Puddles"](quoted from post at 16:18:32 03/01/13) Did you pickup a set of flashbacks also?

Hay, thanks all. 1st, yes I have flashbacks.
I turned up oxy and gas pressures and that took care of it. It shuts down like it is supposed to

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Stick welding

03-01-2013 16:55:06

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 Re: Rosebud tip in reply to ldj, 03-01-2013 15:32:36  
Rosebuds aren't made to be throttled back. There shouldn't be any black soot from the acetylene when you turn the oxygen on. The higher pressure/flow of gas moving through the rosebud helps to cool it off. With too low of pressure it will backfire(pop) when you shut it off and even when using it. Getting it too close to the hot work piece will also cause backfiring even with the right gas pressures. Flashback arrestors prevent the backfire from going back through the hoses and causing a much more serious flashback and/or explosion. Without knowing the size of your rosebud, I'd guess about 10 PSI acetylene and 20 to 30 oxygen should be fine. A real big rosebud needs 15 Acetylene but usually also needs 2 or more cylinders manifolded together to supply enough acetylene without drawing the acetone out of the cylinder(s).

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