METAL TREATMENT METHOD Russian patent published in 1999 - IPC

Abstract RU 2131484 C1

FIELD: metalworking. SUBSTANCE: metal surface is treated with nitric acid-containing solution to which hydrogen peroxide is added to form gaseous nitrogen compounds. At least part of hydrogen peroxide solution is added by way of spraying its aqueous solution or applying it directly onto metal surface through one or several separate nozzles. EFFECT: facilitated operation. 10 cl, 1 dwg

Similar patents RU2131484C1

Title	Year	Author	Number
METHOD OF PREPARING CHLORINE DIOXIDE	1998	Dzhoehl Tenni	RU2163882C2
METHOD OF CHLORINE DIOXIDE PREPARATION	2005	Jokhansson Marija Kristina	RU2355626C2
METHOD OF PRODUCING CATALYST, CATALYST AND METHODS OF PRODUCTION OF HYDROGEN PEROXIDE	1998	Annikka Sellin Mats Njustrem	RU2150322C1
METHOD OF BLEACHING CELLULOSE PULP (ITS VERSION), BIODEGRADABLE CHELATION AGENT FOR BLEACHING CELLULOSE PULP WITH HYDROGEN PEROXIDE, AND METHOD OF REMOVING PRINTER'S INK FROM CELLULOSE PULP	1994	Ehlt'O Bulema Sharl' Mannjuehl' Navarro Lambertus Gerkhardus Jokhannus Olde Khanter Marsellinus Aleksander Van Dorn	RU2131491C1
COMPOSITION BASED ON CYCLIC KETONE PEROXIDES	1995	Rejnder Torenbek Jokhn Mejer Andreas Kherman Khogt Gerrit Bekendam	RU2154649C2
CHLORINE DIOXIDE SYNTHESIS METHOD	2006	Vudraff Tomas E. Berk Majkl Charl'Z Gari A. Brajant Patrik S. Mouls Donal'D Fittsdzheral'D	RU2404118C2
METHOD FOR PREPARING CHLORINE DIOXIDE	2002	Charl'Z Gari Berk Majkl	RU2268241C2
METHOD FOR REMOVING POLLUTANT SUBSTANCES FROM LEAVING GASES	2014	Sachek Naresh Dzh.	RU2648894C2
METHOD OF TREATING POLYMERS CONTAINING RESIDUAL CATALYST	2009	Khogt Andreas Kherman Frejlink Vilkhelm Klas	RU2495883C2
METHOD FOR PREPARING POLYSACCHARIDE OR POLYSACCHARIDE ETHER SOLUTION AND SOLID COMPOSITION FOR PREPARING THIS SOLUTION	2003	De Vit Paulus Piter	RU2322461C2

RU 2 131 484 C1

Authors

Troi Berglind

Arne Frestad

Dates

1999-06-10—Published

1998-04-30—Filed