The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2010
Filed:
Mar. 13, 2007
Takayasu Fujiura, Kobe, JP;
Yasuko Yakou, Kobe, JP;
Satoshi Nishida, Takasago, JP;
Yuuji Taniguchi, Takasago, JP;
Tetsuya Goto, Takasago, JP;
Takayasu Fujiura, Kobe, JP;
Yasuko Yakou, Kobe, JP;
Satoshi Nishida, Takasago, JP;
Yuuji Taniguchi, Takasago, JP;
Tetsuya Goto, Takasago, JP;
Kabushiki Kaisha Kobe Seiko Sho, Hyogo, JP;
Abstract
The present invention relates to a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains a graphite powder and a carbon black, and in which a mixing ratio of the graphite powder to the carbon black is in the range of 25 to 85 parts by weight to 75 to 15 parts by weight; and a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains, as a main component, a carbon black having a dibutyl phthalate absorption of 60 mL/100 g or less and a nitrogen absorption specific surface area of 50 m/g or less. The mixed powder for powder metallurgy of the invention is less in the dust generation and segregation of the carbon supply component. Additionally, when the mixed powder for powder metallurgy of the invention is used, a green compact and a sintered body excellent in the mechanical property can be produced.