METHOD FOR MANUFACTURING SUBMICROMETER CEMENTED CARBIDE

Title:

METHOD FOR MANUFACTURING SUBMICROMETER CEMENTED CARBIDE

Document Type and Number:

Japanese Patent JP2005060224

Kind Code:

A

Abstract:

To provide a method for manufacturing WC powder having an extremely narrow particle size distribution.

In a method for manufacturing tungsten carbide powder, at least one organic or inorganic metal salt of group IV, group V and group VI in periodic table, preferably Cr, V, Mo and W, is dissolved in at least one polar solvent, and WO3 powder is added to the solution, and the solvent is evaporated, and remaining powder is heat-treated in a reducing atmosphere and mixed with carbon and carbonized.

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Inventors:

SANDBERG RICKARD
TILLMAN MATHIAS
WALDENSTROEM MATS

Application Number:

JP2004234454A

Publication Date:

March 10, 2005

Filing Date:

August 11, 2004

Export Citation:

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Assignee:

SANDVIK AB

International Classes:

C01B32/949; B22F9/02; B22F9/18; B22F9/24; C22C1/05; (IPC1-7): C01B31/34

Domestic Patent References:

JPS54150400A	1979-11-26
JPH09132413A	1997-05-20
JPH10508905A	1998-09-02
JPH10507226A	1998-07-14
JP2006205354A	2006-08-10
JP2002047506A	2002-02-15

Foreign References:

US6254658B1	2001-07-03
US6254658B1	2001-07-03

Other References:

JPN6010045682; Ａ．Ｂｏｃｋ　ｅｔ　ａｌ．: 'Ｉｎｈｉｂｉｔｉｏｎ　ｏｆ　Ｇｒａｉｎ　Ｇｒｏｗｔｈ　ｏｎ　Ｓｕｂｍｉｃｒｏｎ　Ｃｅｍｅｎｔｅｄ　Ｃａｒｂｉｄｅｓ' Ｐｏｗｄｅｒ　Ｍｅｔａｌｌｕｒｇｙ　ＩｎｔｅｒｎａｔｉｏｎａｌＶｏｌ．２４，　Ｎｏ．１, 19920201, ｐｐ．２０-２６

Attorney, Agent or Firm:

Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Masaya Nishiyama

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