METHOD AND DEVICE FOR MANUFACTURING INNER-SURFACE COATED CYLINDRICAL BODY AND INNER-SURFACE COATED CYLINDRICAL BODY MANUFACTURED THEREBY

Title:

METHOD AND DEVICE FOR MANUFACTURING INNER-SURFACE COATED CYLINDRICAL BODY AND INNER-SURFACE COATED CYLINDRICAL BODY MANUFACTURED THEREBY

Document Type and Number:

Japanese Patent JP3774696

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide technology for forming an inner surface coating on the inner circumferential face of a cylindrical body with a self-fluxing alloy having a large surface hardness.
SOLUTION: Inside the cylindrical body 1 placed sideways, there is arranged a self-fluxing alloy powder uniformly in the axial direction of the cylindrical body, in a quantity suitable for the thickness of coating to be formed. After a powder layer of a uniform thickness is formed on the inner circumferential face by rotating the cylindrical body 1 at high speed, the powder inside is melted by heating the cylindrical body 1 to form a molten metal layer, then cooled and solidified to form the inner surface coating. In melting and solidifying the self-fluxing alloy, with a centrifugal force of 20-50G kept working on the inner circumferential face position of the cylindrical body 1, the hard ceramics fine particles of low specific gravity in the molten metal are integrated anti-centrifugally on the inner diameter side, increasing the density and hardness of the hard fine particles on the face of the inner surface coating.

Inventors:

Yasuo Watanabe
Michio Tanabe
Yoshinobu Soji
Ken Yatabe
Akihiro Takeya
Fumiaki Tada
Nishibaba Kazunori

Application Number:

JP2002345332A

Publication Date:

May 17, 2006

Filing Date:

November 28, 2002

Export Citation:

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Assignee:

Dai-ichi Kogyo Kogyo Co., Ltd.

International Classes:

B22D19/16; B22D13/00; B22D13/02; B22D13/10; B22D19/00; B22D19/08; B22D19/14; C22C1/10; C22C32/00; C23C24/10; C23C26/00; C23C26/02; (IPC1-7): B22D19/16; B22D13/02; B22D13/10; B22D19/00; B22D19/14; C22C1/10; C22C32/00; C23C24/10; C23C26/02

Domestic Patent References:

JP2000170987A
JP5293621A
JP57156384A
JP6000612A
JP64025989A
JP1096363A
JP2155559A
JP58141388A
JP63165057A
JP57118858A
JP2002263823A
JP2108445A
JP2001214990A

Attorney, Agent or Firm:

Kyozo Norimatsu

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