PROCEDURE FOR EQUAL-CHANNEL ANGULAR PRESSING WORK PIECES OUT OF TITANIUM OR STAINLESS STEEL Russian patent published in 2010 - IPC B21C23/22 B21J5/06 C22F1/18 C21D8/00 B82B3/00 

Abstract RU 2400321 C1

FIELD: metallurgy.

SUBSTANCE: invention refers to process of mechanical treatment of metals by pressing with intensive plastic deformation and can be used for fabrication of nano-crystal hardly-deformed metals. The procedure consists in preparation, cleaning and work-pieces pressing. An intermediate layer of nickel is preliminary applied on surface of work-pieces. Further a plastic layer of copper of not less 80-100 mcm thickness is applied by the method of galvanic coating in electrolyte. Also work pieces are successively pressed at 500-1000 MPa pressure in the range of temperature 450-500°C.

EFFECT: reduced power consumption at pressing, improved processability, improved mechanic characteristics of work-piece and reduced oxidation and tribo-technical indices of process.

1 dwg, 1 tbl, 2 ex

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RU 2 400 321 C1

Authors

Korshunov Aleksandr Ivanovich

Morozova Elena Vital'Evna

Goncharov Ivan Dmitrievich

Poljakov Lev Viktorovich

Dates

2010-09-27Published

2009-04-13Filed