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2 307 012

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C1

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IPC

B23P15/28(2006-01-01)

E21B10/46(2006-01-01)

C22C29/00(2006-01-01)

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Application

2006109579/02, 2006-03-27

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Start date

2006-03-27

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Actual filing date

2006-03-27

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Published

2007-09-27

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Inventor

Korshunov Anatolij BorisovichKrysov Georgij AleksandrovichIvanov Aleksandr NikolaevichBarinov Viktor GeorgievichBuslov Pavel Evgen'Evich

(73)

Holder

Nauchno-Issledovatel'Skij Institut Mekhaniki Moskovskogo Gosudarstvennogo Universiteta Im. M.V. Lomonosova

HARD-ALLOY TOOL Russian patent published in 2007 - IPC B23P15/28 E21B10/46 C22C29/00 

Abstract RU 2307012 C1

FIELD: powder metallurgy, namely manufacture of hard-alloy tools for cold and hot mechanical working, possibly cutting tools, drilling tools and draw plates.

SUBSTANCE: tool is made of hard alloy containing tungsten mono-carbide, titanium carbide and cementing cobalt binder. Near-surface layer with thickness 3 -15 micrometers includes 50 -99.5 mass % of (Ti,W)C. Crystal lattices of carbide phases in near-surface layer have integral disorder degree (b/a)Σ < 2. (b/a)Σ = (b/a)(Ti,W)C -C(Ti,W)C + (b/a)WC - CWC where (b/a)(Ti,W)C -disorder of crystalline lattice of (Ti,W)C; (b/a)WC -disorder of crystalline lattice of WC; C(Ti,W)C -concentration of (Ti,W)C mass%; CWC -concentration of WC, mass%; b = β2 /β1 ; a = tgν2/tgν1 ; β - physical widening of diffraction line; ν - angular position of gravity center of diffraction line; indexes 1 and 2 correspond to diffraction lines taken at small and large diffraction angles of X-rays.

EFFECT: high strength factor of tool and therefore its increased useful life period.

1 dwg, 3 tbl

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RU 2 307 012 C1

Authors

Korshunov Anatolij Borisovich

Krysov Georgij Aleksandrovich

Ivanov Aleksandr Nikolaevich

Barinov Viktor Georgievich

Buslov Pavel Evgen'Evich

Dates

2007-09-27—Published

2006-03-27—Filed

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