Hydrogen as a fuel gas?

[Spark plug]

I know jewlers use hydrogen as a fuel gas, as it produces a very clean flame but what other uses dose hydrogen have over acetylene and propane? Just out of interest really.

 

[daleyd]

It is also used in flammability monitors as a fuel source because of the clean burning properties, but i think the flame it produces is almost invisible, which I would imagine would make it difficult to work with and potentially dangerous as a useful workshop gas.

 

[rich the mechanic]

Also steel heated with hydrogen can become brittle (hydrogen embrittlement) which can be reversed by baking out for several hours so cost wise is detramental.

 

[TechnicAl]

I think its too dangerous plus you cant use Oxy - Hydrogen because you get water H2O

We use it to prevent Oxidation when bright annealing Stainless but its in a tube furnace and the wire passes through the tube. Its reducing which means it will deoxidise any surface oxides back to the metal. You can imagine the colour the stainless would go if we heated it to 1100 oC in the atmosphere.

 

[backpurge]

It's quite common to find it as an addition to shielding and back purging gas mixtures but it's uses as a fuel gas are quite limited due to reasons stated above

 

[Spark plug]

I was just curious really, I thort it may have been a bit more usefull.

 

[KemppiFrog]

Quite a while back we used it as a cheaper alt to acetylene, but only for heating and cutting.

 

[penfold]

I think its too dangerous plus you cant use Oxy - Hydrogen because you get water H2O.

We use it to prevent Oxidation when bright annealing Stainless but its in a tube furnace and the wire passes through the tube. Its reducing which means it will deoxidise any surface oxides back to the metal. You can imagine the colour the stainless would go if we heated it to 1100 oC in the atmosphere.

Shirley you get that regardless of which fuel gas you use? The down side is H2 burns to 2660C which is worse than Propane, never mind MAPP or acetylene.