RU2351676C1 - Sintered hard alloy on basis of tungsten carbide - Google Patents

Sintered hard alloy on basis of tungsten carbide Download PDF

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Publication number
RU2351676C1
RU2351676C1 RU2007136541/02A RU2007136541A RU2351676C1 RU 2351676 C1 RU2351676 C1 RU 2351676C1 RU 2007136541/02 A RU2007136541/02 A RU 2007136541/02A RU 2007136541 A RU2007136541 A RU 2007136541A RU 2351676 C1 RU2351676 C1 RU 2351676C1
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Russia
Prior art keywords
tungsten carbide
hard alloy
basis
sintered hard
alloy
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RU2007136541/02A
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Russian (ru)
Inventor
Юлия Алексеевна Щепочкина (RU)
Юлия Алексеевна Щепочкина
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Юлия Алексеевна Щепочкина
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Priority to RU2007136541/02A priority Critical patent/RU2351676C1/en
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Publication of RU2351676C1 publication Critical patent/RU2351676C1/en

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Abstract

FIELD: metallurgy.
SUBSTANCE: invention relates to powder metallurgy field. Particularly it relates to receiving of sintered hard alloy on the basis of tungsten carbide. It can be used for manufacturing of cutters, drills and milling cutter. Hard alloy contains 80.0-82.0 wt % tungsten carbide and 18.0-20.0 wt % of binding. Binding contains, wt %: molybdenum 48.0-50.0; niobium 1.0-2.0; rhenium 10.0-12.0; cobalt 36.0-41.0.
EFFECT: receiving of high-strength alloy.
1 tbl

Description

Изобретение относится к области порошковой металлургии и касается производства спеченных твердых сплавов на основе карбида вольфрама, которые могут быть использованы для изготовления резцов, сверл, фрез и другого инструмента.The invention relates to the field of powder metallurgy and for the production of sintered hard alloys based on tungsten carbide, which can be used for the manufacture of cutters, drills, mills and other tools.

Известен спеченный твердый сплав на основе карбида вольфрама, содержащий 3,0-20,0 мас.% сплава-связки, содержащего, мас.%: кобальт 20,0-75,0; молибден - до 5,0; ниобий - до 3,0 [1].Known sintered carbide based on tungsten carbide, containing 3.0 to 20.0 wt.% A binder alloy containing, wt.%: Cobalt 20.0-75.0; molybdenum - up to 5.0; niobium - up to 3.0 [1].

Задачей изобретения является повышение прочности сплава.The objective of the invention is to increase the strength of the alloy.

Технический результат достигается тем, что в спеченном твердом сплаве на основе карбида вольфрама, содержащем 80,0-82,0 мас.% карбида вольфрама и 18,0-20,0 мас.% связки, связка содержит, мас.%: молибден 48,0-50,0; ниобий 1,0-2,0, рений 10,0-12,0; кобальт 36,0-41,0.The technical result is achieved in that in a sintered hard alloy based on tungsten carbide containing 80.0-82.0 wt.% Tungsten carbide and 18.0-20.0 wt.% Binder, the binder contains, wt.%: Molybdenum 48 0-50.0; niobium 1.0-2.0, rhenium 10.0-12.0; cobalt 36.0-41.0.

В табл. 1 приведены составы сплава, а также предел их прочности при изгибе. В табл. 2 приведены составы связки.In the table. 1 shows the composition of the alloy, as well as the ultimate strength in bending. In the table. 2 shows the composition of the ligament.

Таблица 1Table 1 КомпонентыComponents Состав, мас.%:Composition, wt.%: 1one 22 33 Карбид вольфрамаWolfram carbide 80,080.0 81,081.0 82,082.0 СвязкаBunch 20,020,0 19,019.0 18,018.0 Предел прочности при изгибе, МПаBending Strength, MPa ~1950~ 1950 ~1950~ 1950 ~1950~ 1950

Таблица 2.Table 2. КомпонентыComponents Состав, мас.%:Composition, wt.%: 1one 22 33 МолибденMolybdenum 48,048.0 49,049.0 50,050,0 НиобийNiobium 1,01,0 1,51,5 2,02.0 РенийRhenium 10,010.0 11,011.0 12,012.0 КобальтCobalt 41,041.0 38,538.5 36,036.0

Порошки компонентов сплава смешивают в указанных соотношениях, смесь прессуют под давлением 4,5-4,8 т/см2 и спекают в электропечах при температуре 1300-1330°С в вакууме в течение 7-9 ч. При спекании связка растворяет часть карбида вольфрама и плавится. В результате получают плотный материал, структура которого состоит из частиц карбида вольфрама, соединенных связкой.The powders of the alloy components are mixed in the indicated proportions, the mixture is pressed under pressure of 4.5-4.8 t / cm 2 and sintered in an electric furnace at a temperature of 1300-1330 ° C in vacuum for 7-9 hours. During sintering, the binder dissolves part of the tungsten carbide and melts. The result is a dense material whose structure consists of tungsten carbide particles connected by a binder.

Источники информацииInformation sources

1. GB 1085041, С22С 29/06, 1967.1. GB 1085041, C22C 29/06, 1967.

Claims (1)

Спеченный твердый сплав на основе карбида вольфрама, содержащий 80,0-82,0 мас.% карбида вольфрама и 18,0-20,0 мас.% связки, отличающийся тем, что связка содержит, мас.%:
молибден 48,0-50,0 ниобий 1,0-2,0 рений 10,0-12,0 кобальт 36,0-41,0
Sintered tungsten carbide-based carbide containing 80.0-82.0 wt.% Tungsten carbide and 18.0-20.0 wt.% Binder, characterized in that the binder contains, wt.%:
molybdenum 48.0-50.0 niobium 1.0-2.0 rhenium 10.0-12.0 cobalt 36.0-41.0
RU2007136541/02A 2007-10-02 2007-10-02 Sintered hard alloy on basis of tungsten carbide RU2351676C1 (en)

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RU2351676C1 true RU2351676C1 (en) 2009-04-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2512983A (en) * 2013-02-11 2014-10-15 Element Six Gmbh Cemented carbide material and method of making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2512983A (en) * 2013-02-11 2014-10-15 Element Six Gmbh Cemented carbide material and method of making same
GB2512983B (en) * 2013-02-11 2017-11-15 Element Six Gmbh Cemented carbide material and method of making same

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