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Hydrogen and methane bake-out

Hydrogen and methane bake-out

(OP)
As I was searching through the different treads of this forum, I found some good info regarding the bake-out, but there was not much discussion on the practices. I would like your opinion and advice on the bake-out temperature and time. So far the mnost common are the temperatures between 200°C and 400°C, but someone went as far as to recommend the stress relieving temparature. I would also like some advice on what codes or scientific articles could be helpful in establishing and justifying this requirement.

Putting Human Factor Back in Engineering

RE: Hydrogen and methane bake-out

Hydrogen bake out is specified for hard steels (~43 HRC) susceptible to embrittlement.
The specified temperature should not exceed that of tempering (otherwise a reduction of hardness will ensue).

http://www.welding-advisers.com/

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