Bright anneal stainless in a Carbon steel annealing oven
Bright anneal stainless in a Carbon steel annealing oven
(OP)
Ok, before you start throwing ingots at me here is the question in detail:
I have an oven that I routinely anneal carbon steel parts. There is smut all over the inside of it. Guessing Fe and oils from parts that where not ideally cleaned.
Can I burn off the smut with a few high T cycles and then try to bright anneal stainless?
I need some votes here. ... I am already saying no.
Thanks,
Herc
I have an oven that I routinely anneal carbon steel parts. There is smut all over the inside of it. Guessing Fe and oils from parts that where not ideally cleaned.
Can I burn off the smut with a few high T cycles and then try to bright anneal stainless?
I need some votes here. ... I am already saying no.
Thanks,
Herc





RE: Bright anneal stainless in a Carbon steel annealing oven
RE: Bright anneal stainless in a Carbon steel annealing oven
RE: Bright anneal stainless in a Carbon steel annealing oven
You'll want some heavy leather gloves to protect your hands while you're cutting or folding it; it makes a nasty deep cut that bleeds freely.
Mike Halloran
Pembroke Pines, FL, USA
RE: Bright anneal stainless in a Carbon steel annealing oven
RE: Bright anneal stainless in a Carbon steel annealing oven
RE: Bright anneal stainless in a Carbon steel annealing oven
There has been done bright annealing of stainless in this furnace in the past but results where not consistent.
Yes I don't like the idea either....!
RE: Bright anneal stainless in a Carbon steel annealing oven
SS that is vacuum annealed will always have some residual surface oxides.
This material will not have optimal corrosion resistance unless it is further treated.
That said, if you ran a cycle hotter than your SS anneal temp on the furnace with a dummy load I don't see any reason why the SS that you ran after would be any worse than stuff run in a SS only furnace.
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Plymouth Tube
RE: Bright anneal stainless in a Carbon steel annealing oven
So for Bright anneal you would need Argon/Nitrogen or Hydrogen?
We do have a pickle/pass step afterwards.
RE: Bright anneal stainless in a Carbon steel annealing oven
http://heattreatment.linde.com/International/Web/L...
RE: Bright anneal stainless in a Carbon steel annealing oven
In some alloys (which cannot anneal in hydrogen) this definition is fine.
In SS it is not. Without hydrogen you will not reduce the Cr oxides on the surface and be able to achieve optimal corrosion resistance.
When we vacuum anneal SS we follow it with pickle and passivation.
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Plymouth Tube
RE: Bright anneal stainless in a Carbon steel annealing oven