METHOD OF PREPARING STEEL POWDER Russian patent published in 2018 - IPC B22F9/24 

Abstract RU 2664110 C2

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of powder metallurgy of alloyed steels used in the manufacture of corrosion-resistant and wear-resistant products using methods of traditional powder metallurgy, 3D printing, MIM-technologies. Method for obtaining steel powder includes chlorination of steel waste in molten potassium chloride, calciumthermic reduction of metal chlorides in the melt, cooling the melt, crushing, washing of the obtained steel powder and drying, wherein before reduction, one-time addition into the melt of alloying metals in the form of fluorine-containing salts is performed at a temperature of 780–800 °C and stirring the melt at rate of 300–360 rpm for 10–20 minutes under isothermal conditions.

EFFECT: invention is aimed at facilitating the production of steel powders with precise content of alloying components.

1 cl, 3 ex

Similar patents RU2664110C2

Title Year Author Number
METHOD OF PRODUCING RARE METAL POWDERS 2009
  • Fedorov Vladimir Dmitrievich
  • Arzhatkina Lidija Alekseevna
  • Arzhatkina Oksana Alekseevna
  • Nikitina Elena Viktorovna
RU2416493C1
PRODUCTION OF COMPOSITE POWDERS OF REFRACTORY AND RARE-EARTH METALS 2013
  • Arzhatkina Lidija Alekseevna
  • Arzhatkina Oksana Alekseevna
  • Nikitina Elena Viktorovna
  • Lazarenko Valentin Vladislavovich
RU2538794C1
METHOD OF CHLORATION OF RARE METAL FEED STOCK IN MOLTEN SALTS 2013
  • Arzhatkina Oksana Alekseevna
  • Kovaleva Irina Vladimirovna
RU2550404C2
METHOD OF PRODUCTION OF STEEL POWDER WITH LOW OXYGEN CONTENT 2015
  • Arzhatkina Oksana Alekseevna
  • Tokareva Olesya Vladimirovna
  • Kovaleva Irina Vladimirovna
RU2625154C2
METHOD FOR PRODUCING TITANIUM-ALUMINUM INTERMETALLIDE IN THE FORM OF POWDER 1994
  • Guljakin A.I.
  • Nechaev N.P.
  • Berdnikova L.M.
  • Rymkevich D.A.
  • Shalamov A.V.
  • Semjannikov G.G.
  • Mushkov S.V.
  • Pinaev E.N.
RU2082561C1
METHOD OF SEPARATING ZIRCONIUM AND HAFNIUM TETRACHLORIDES BY EXTRACTIVE RECTIFICATION 2013
  • Arzhatkina Oksana Alekseevna
  • Serov Nikolaj Gennad'Evich
RU2538890C1
PROCESS OF PRODUCTION OF ALLOYS BASED ON RARE-EARTH METALS, SCANDIUM AND YTTRIUM 1994
  • Gotovchikov V.T.
  • Filippov E.A.
  • Knjazev O.I.
  • Zrjachev A.N.
  • Lebedev D.I.
RU2061078C1
METHOD FOR OBTAINING ALUMINIUM-TITANIUM-BORON ALLOY COMBINATION 2011
  • Sukhikh Aleksandr Juvenal'Evich
  • Suslov Georgij Alekseevich
  • Efremov Vjacheslav Petrovich
  • Trubin Adol'F Nikolaevich
RU2466202C1
METHOD OF OBTAINING LIGATURE "ALUMINUM-SCANDIUM" (VERSIONS) 2017
  • Maksimtsev Konstantin Viktorovich
  • Mukhamadeev Andrej Salavatovich
  • Polovov Ilya Borisovich
  • Poponin Nikolaj Anatolevich
  • Rebrin Oleg Irinarkhovich
RU2704681C2
PROCEDURE FOR PRODUCTION OF ALUMO-SCANDIUM CONTAINING ADDITIONAL ALLOY AND CHARGE FOR PRODUCTION OF ALUMO-SCANDIUM CONTAINING ADDITIONAL ALLOY 2009
  • Jatsenko Sergej Pavlovich
  • Jatsenko Aleksandr Sergeevich
  • Ovsjannikov Boris Vladimirovich
  • Varchenja Pavel Anatol'Evich
RU2421537C2

RU 2 664 110 C2

Authors

Arzhatkina Oksana Alekseevna

Arzhatkina Lidiya Alekseevna

Lazarenko Valentin Vladislavovich

Ivanov Andrej Nikolaevich

Dates

2018-08-15Published

2016-12-16Filed