Invention Application
- Patent Title: Sintered sprocket for silent chain and production method therefor
- Patent Title (中): 用于无声链的烧结链轮及其制造方法
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Application No.: US11397702Application Date: 2006-04-05
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Publication No.: US20060171838A1Publication Date: 2006-08-03
- Inventor: Akira Fujiki , Yukihiro Maekawa , Yutaka Mabuchi , Takashi Murata , Takashi Suzuki , Jyun-ichi Yamada , Tadayuki Tsutsui , Kei Ishii
- Applicant: Akira Fujiki , Yukihiro Maekawa , Yutaka Mabuchi , Takashi Murata , Takashi Suzuki , Jyun-ichi Yamada , Tadayuki Tsutsui , Kei Ishii
- Applicant Address: JP Yokohama-shi JP Matsudo-shi
- Assignee: NISSAN MOTOR CO., LTD.,HITACHI POWDERED METALS CO., LTD.
- Current Assignee: NISSAN MOTOR CO., LTD.,HITACHI POWDERED METALS CO., LTD.
- Current Assignee Address: JP Yokohama-shi JP Matsudo-shi
- Priority: JP2003-277289 20030722
- Main IPC: B22F3/12
- IPC: B22F3/12

Abstract:
A sintered sprocket for a silent chain is obtained from a material with few addition elements by a simple densifying method. The sintered sprocket is made of an ferrous material having an ovarall composition containing Cu at 1 to 2%, C at 0.5 to 0.8%, Mn as an inevitable impurity at 0.10% or less, and balance of Fe and other inevitable impurities by mass and has a density of 7.1 Mg/m3 or higher, 65 HRA or higher as a hardness in the gear teeth, and a martensite, sorbite, bainite, or their mixed structure as a cross-sectional microscopic structure in at least the gear teeth and the peripheral area of the gear teeth.
Public/Granted literature
- US07309465B2 Sintered sprocket for silent chain and production method therefor Public/Granted day:2007-12-18
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