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2 448 806

(13)

(51)

IPC

B22D23/10(2006-01-01)

(21) (22)

Application

2011102084/02, 2011-01-20

(24)

Start date

2011-01-20

(22)

Actual filing date

2011-01-20

(45)

Published

2012-04-27

(72)

Inventor

Afonin Boris VladimirovichVelikolug Aleksandr MikhajlovichVoronin Pavel VjacheslavovichVoronin Roman PavlovichGrekhov Aleksandr Evgen'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Im. V.A. Degtjareva"

METHOD OF PRODUCING PUNCHING TOOLS AND INJECTION MOULDS FROM MOULDED BLANKS OF MARAGING STEELS Russian patent published in 2012 - IPC B22D23/10

Abstract RU 2448806 C1

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used in making composite die inserts and injection molds from castings produced by electric slag chill casting. Consumable electrode is made from chips of maraging steel, for example, "ЧС-35ВИ". Quenched chips is degreased and inserted into steel mould 1 to be closed by cap 2 and locked by set of wedges 3. Mould 1 is blown by argon via tubes 4, 5 with calibrated holes to create surplus pressure. Said mould is placed in furnace and kept therein at 490±10°C for 3 h. After cooling, consumable electrode is withdrawn from mould. Electric slag chill casting is performed with melt crystallisation. Casting is repeatedly quenched and water-cooled, machined and hardened by low-temperature maraging.

EFFECT: higher hardness of tool.

1 dwg

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RU 2 448 806 C1

Authors

Afonin Boris Vladimirovich

Velikolug Aleksandr Mikhajlovich

Voronin Pavel Vjacheslavovich

Voronin Roman Pavlovich

Grekhov Aleksandr Evgen'Evich

Dates

2012-04-27—Published

2011-01-20—Filed