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Nitrokarburering

Nitrokarburering

Norrlands Härdindustri härdar färdigbearbetade produkter såsom ex, hydrauldetaljer, axlar och tappar. Till skillnad mot “vanlig” nitrering tillsätts förutom ammoniak även koldioxid i ugnsatmosfären. Uppvärmning sker till c:a 570°C. Kol och kväve bildar karbonitrider som ger upphov till ett hårt ytskikt med mycket bra nötningsbeständighet. Med efterföljande postoxidering kan en svart yta med bra korrosionsbeständighet åstadkommas.