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Annealing of SS wire
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TOPIC: Annealing of SS wire

Annealing of SS wire 2 years, 3 months ago #995

In the annealing of austinitic SS [300 series] wire, what is the proper (1) temperature, (2) speed, and (3) % of Hydrogen? We are running, at this time, at ~1920°F and ~94 fpm, w/ 35%H-65%N mix. Is there a more optimum setting, and/or how best to determine such?


Re: Annealing of SS wire 2 years, 3 months ago #996

I'm not sure that anyone is going to respond to this request so here is what I would suggest:.

(1) Learn from your SS supplier if the disassociated ammonia annealing atmosphere you are using is to its optimized proportions.

(2) Carefully design a series of quick experiments, individually varying the other parameters on one gage size to determine if you are indeed optimized.

(3) Optimize that size. Basic physical properties I imagine will be the measure.

(4) Cautiously follow through on the other gage sizes.

That's the process engineering approach we would consider.

Kindest regards,

Peter Stewart-Hay
Stewart-Hay Associates

Re: Annealing of SS wire 2 years, 3 months ago #997

Is it worth to anneal 0.7 ss wire at 1100 C.
our requirement is reduce the tensile strength to bellow 65 kg/mm sqr and the .7 to be redrawn to .60
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