Metal treatment – Compositions – Heat treating
Patent
1982-03-29
1983-11-29
Sheehan, John P.
Metal treatment
Compositions
Heat treating
148 203, C21D 148
Patent
active
044179278
ABSTRACT:
Ammonia is used in the hardening of steels in a nitriding process which is controlled to limit or prevent formation of undesired iron nitrides by measuring the difference between input and output gas flow rates to and from the nitriding chamber and adjusting the input gas composition and/or flow rate in response to that difference to provide a predetermined desired composition of the nitriding atmosphere in the chamber.
REFERENCES:
patent: 3684590 (1972-08-01), Podgurski
patent: 4003764 (1977-01-01), Wunning
Davis Jr. James C.
General Electric Company
Magee Jr. James
MaLossi Leo I.
Sheehan John P.
LandOfFree
Steel nitriding method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steel nitriding method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steel nitriding method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-606380