Hydrogen gas produced when machining al.
Hydrogen gas produced when machining al.
(OP)
I was told recently that machining aluminium produced Hydrogen gas, as the material oxidises. I was told this by a salesman, so i am not sure of the truth in it... If anyone could enlighten me?





RE: Hydrogen gas produced when machining al.
And if chemically machining the Al with hot caustic (NaOH solution), the aluminum oxide dissolves as fast as it forms, allowing continuos exposure of bare Al to H2O, thereby producing a steady stream of H2 which can ignite under certain conditions, as when using a foam blanket to cut down on noxious mist.
RE: Hydrogen gas produced when machining al.
RE: Hydrogen gas produced when machining al.
But, a more likely reaction mechanism: the OH end of the ethanol adsorbs onto the Al and then dissociates, with the O sticking to the Al and the H replacing the OH on the former ethanol molecule, producing ethane gas C2H6 rather than H2.
But, not very much in either case; maybe only forming a monolayer or two per cutting pass.