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(19)

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2 569 287

(13)

(51)

IPC

B22F3/12(2006-01-01)

C22C1/08(2006-01-01)

C22C27/04(2006-01-01)

(21) (22)

Application

2014121218/02, 2014-05-27

(24)

Start date

2014-05-27

(22)

Actual filing date

2014-05-27

(45)

Published

2015-11-20

(72)

Inventor

Levashov Evgenij AleksandrovichShumenko Vladimir NikolaevichSudina Svetlana SergeevnaLoginova Tat'Jana VladimirovnaShumenko Vladimir VladimirovichFedorenko Maksim Alekseevich

(73)

Holder

Federal'Noe Gosudarstvennoe Avtonomnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Issledovatel'Skij Tekhnologicheskij Universitet

PRODUCTION OF SINTERED POROUS TUNGSTEN CARCASS Russian patent published in 2015 - IPC B22F3/12 C22C1/08 C22C27/04

Abstract RU 2569287 C1

FIELD: metallurgy.

SUBSTANCE: sintered porous tungsten carcass is produced by the mixing of tungsten power with activator additive powder composed of nickel and iron powders, the compaction and sintering. Tungsten power with particle size of 1-0.5 mcm is used in claimed process. Powders are mixed by planetary-type mill at the ratio between the weight of the mix of powders and that of balls equal to 1:10 with addition of isopropyl alcohol and at that between isopropyl alcohol volume and that of the mix of powders equal to 2:1. Then, drying is performed to a complete removal of alcohol. Compaction is conducted with the addition of ethanol to the mix of powders at the ratio of 1-5 vol %. Sintering is performed in atmosphere hydrogen at 800°C for 30 minutes.

EFFECT: lower sintering temperature and higher strength of sintered tungsten carcass.

4 dwg, 3 ex

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RU 2 569 287 C1

Authors

Levashov Evgenij Aleksandrovich

Shumenko Vladimir Nikolaevich

Sudina Svetlana Sergeevna

Loginova Tat'Jana Vladimirovna

Shumenko Vladimir Vladimirovich

Fedorenko Maksim Alekseevich

Dates

2015-11-20—Published

2014-05-27—Filed