Title:
VALVE SEAT
Document Type and Number:
WIPO Patent Application WO/2011/105338
Kind Code:
A1
Abstract:
Disclosed is a valve seat made of a combined iron-based sintered alloy which is so highly resistant to abrasion and so satisfactorily machinable as to be capable of being used for an internal-combustion engine of a cylinder fuel injection type which is ready for improvement of fuel efficiency, low emission, and high power. Specifically disclosed is a valve seat made of the combined iron-based sintered alloy wherein hard particles and a solid lubricant are dispersed. By dispersing the comparatively coarse solid lubricant of an amount at such a level that never deteriorates the strength of the sintered body significantly, self lubricating properties are imparted. Furthermore, by dispersing the fine solid lubricant at such a level that never inhibits the combining of matrix particles with one another, the machinability is improved.
Inventors:
TAKAHASHI Rintarou (Kabushiki Kaisha Riken 14-1, Suehiro 4-chome, Kumagaya-sh, Saitama 22, 〒3608522, JP)
高橋 林太郎 (〒22 埼玉県熊谷市末広４丁目１４番１号 株式会社リケン熊谷事業所内 Saitama, 〒3608522, JP)
高橋 林太郎 (〒22 埼玉県熊谷市末広４丁目１４番１号 株式会社リケン熊谷事業所内 Saitama, 〒3608522, JP)
Application Number:
JP2011/053744
Publication Date:
September 01, 2011
Filing Date:
February 21, 2011
Export Citation:
Assignee:
KABUSHIKI KAISHA RIKEN (13-5, Kudankita 1-chome Chiyoda-k, Tokyo 02, 〒1028202, JP)
株式会社リケン (〒02 東京都千代田区九段北１丁目１３番５号 Tokyo, 〒1028202, JP)
TAKAHASHI Rintarou (Kabushiki Kaisha Riken 14-1, Suehiro 4-chome, Kumagaya-sh, Saitama 22, 〒3608522, JP)
株式会社リケン (〒02 東京都千代田区九段北１丁目１３番５号 Tokyo, 〒1028202, JP)
TAKAHASHI Rintarou (Kabushiki Kaisha Riken 14-1, Suehiro 4-chome, Kumagaya-sh, Saitama 22, 〒3608522, JP)
International Classes:
C22C33/02; B22F1/00; B22F5/00; C22C27/04; C22C38/00; C22C38/12; C22C38/16; F01L3/02
Attorney, Agent or Firm:
TAKAISHI Kitsuma (Kagurazaka FN Bldg. 5F, 67 Kagurazaka 6-chome, Shinjuku-k, Tokyo 25, 〒1620825, JP)
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Claims: