Demagnetizing 316SS
Demagnetizing 316SS
(OP)
When demaging SS (800C),,,, does the cooling rate matter
As you fine gentlemen know,, 2mm cools quicker than 30mm in air
Thanks
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RE: Demagnetizing 316SS
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RE: Demagnetizing 316SS
RE: Demagnetizing 316SS
You need to heat to solution anneal temp. If the parts have a clean microstructure then 1010C should be enough. If the structure has some secondary phases in it then 1050C should be the minimum.
The critical part of the cooling is how long it takes to get below aprox. 600C
You can find the cooling curves in many texts. If your C is low (say 0.030% or less) then the required cooling time is measured in hours, not minutes.
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Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Demagnetizing 316SS
RE: Demagnetizing 316SS
Often, if such a treatment is required, people will do before the final machining. You may need to blast and pickle in order to clean the parts. This could effect finished surfaces.
In either 304 or 316 this will be a function of the chemistry and prior thermomechanical history. This effect is more pronounced in compositions that have lower Ni (or Ni equivalent).
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm