Title:
METHOD OF PRODUCING SINTERED PART AND SINTERED PART PRODUCED BY THE METHOD
Document Type and Number:
Japanese Patent JP2014181396
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method which enables production of a sintered part, e.g. a binary sprocket wheel having different projected shapes of one and the other ends by molding a raw material powder with an inexpensive press machine with an undivided die in producing a sintered part.SOLUTION: In a step of molding a raw material powder so as to produce a desired sintered body 20, radial-direction protrusions of different circumferential-direction phases, e.g. grear teeth 22 and 23, are provided at two positions of the outer periphery of a cylindrical part 21 at an interval in the axial direction. A molding of the powder which has guards 24 larger in radial-direction protrusion amount than individual radial-direction protrusions is formed between the radial-direction protrusions at the two positions, and the guards 24 are then removed. An annular groove 25 is formed between the radial-direction protrusions at the two positions.
Inventors:
TSUCHIYA YOSHITSUGU
YAMAMOTO YUTA
YAMAMOTO YUTA
Application Number:
JP2013058073A
Publication Date:
September 29, 2014
Filing Date:
March 21, 2013
Export Citation:
Assignee:
SUMITOMO DENKO SHOKETSU GOKIN
International Classes:
B22F5/08; B22F3/02; B22F3/24; F16H53/02; F16H55/06; F16H55/17
Domestic Patent References:
| JPS61104004A | 1986-05-22 | |||
| JPH0551604A | 1993-03-02 | |||
| JP2011190923A | 2011-09-29 | |||
| JP2005265187A | 2005-09-29 | |||
| JPS62170404A | 1987-07-27 | |||
| JPH0770612A | 1995-03-14 | |||
| JPH0718306A | 1995-01-20 | |||
| JPH1068003A | 1998-03-10 |
Attorney, Agent or Firm:
Bunji Kamata
Naoya Kamata
Masahiro Too
Takayoshi Tagawa
Yaichiro Nakatani
Naoya Kamata
Masahiro Too
Takayoshi Tagawa
Yaichiro Nakatani