METHOD AND DEVICE FOR NITROGENING THE TEXTURED SHEET FROM ELECTROTECHNICAL STEEL Russian patent published in 2017 - IPC C23C8/50 C25D9/10 

FIELD: metallurgy.

SUBSTANCE: band is immersed for a period of 5 s to 1000 s or from 3 s to 300 s in a molten bath with a bath heating regulation of 400°C to 700°C while maintaining the set temperature. Mentioned device comprises a container for containing a bath with the molten salt, temperature control device for the heating of said bath with the molten salt to a predetermined temperature and maintaining said bath with the molten salt at a predetermined temperature and at least one guide roller for maintaining said strip extending inside the bath with mentioned molten salt. In another embodiment, the device comprises a container for containing a bath with the molten salt, temperature control device for the heating of mentioned bath with the molten salt to a predetermined temperature and maintaining the bath with the molten salt at a predetermined temperature, a guide roller for maintaining the strip passing inside mentioned bath with the molten salt, and at least one counter electrode between which and mentioned band voltage is applied for electrolytic nitriding said strip.

EFFECT: obtaining permanent magnetic properties and the hardening of the surface layers of the textured sheet of electrical steel.

13 cl, 7 dwg, 2 tbl, ex 2