METHOD FOR HIGH-TEMPERATURE NITROGENIZATION OF STEEL PARTS Russian patent published in 2000 - IPC

Abstract RU 2148676 C1

FIELD: ferrous metallurgy. SUBSTANCE: steel parts are subjected to surface alloying with nitride-forming elements using laser heating, after which parts are nitrogenized for 29 hr in ammonia medium at 540 C and then annealed at 600 C for 20-40 min. EFFECT: increased surface strength of parts. 1 tbl, 5 ex

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RU 2 148 676 C1

Authors

Chudina O.V.

Petrova L.G.

Dates

2000-05-10Published

1998-06-26Filed