Behavior of Rp3-High Speed Steel on Short Time Nitriding in Fluidized Bed

Adolf BÂCLEA; Nelu CAZACU; Sorin DOBROVICI; Elena DRUGESCU; Octavian POTECAŞU

Auteur/ices

Adolf BÂCLEA S.C. Cosena S.R.L, Constanţa, Romania
Nelu CAZACU "Dunarea de Jos" University of Galati, Romania
Sorin DOBROVICI "Dunarea de Jos" University of Galati, Romania
Elena DRUGESCU "Dunarea de Jos" University of Galati, Romania
Octavian POTECAŞU "Dunarea de Jos" University of Galati, Romania

Mots-clés :

Nitriding, fluidized bed, HSS, Rp3, short cycle

Résumé

For steel nitriding, treatment time is a important factor. Gas and plasma nitriding are usual method to increase surface properties by nitriding. A close retort is used. Total time for treatment are higher because are necessary transition time for heating and cooling. Fluidized bed offer a short time for heating and cooling because furnace having an open retort. Work paper is based by nitriding experiments by experimental fluidized bed furnace. A gas mixture of ammonia and nitrogen was used. For samples were used HHS (Rp3) . Results were investigated micrographic, surface hardness test (HV5) and micro hardness (HV0,05).