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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.:

US 11219950 B1

PDFFull Text
Date of Patent:
Jan. 11, 2022

Filed:

Mar. 18, 2019

Sintered component

Applicant:

Sumitomo Electric Sintered Alloy, Ltd, Takahashi, JP;

Inventors:

Yasunori Sonoda, Takahashi, JP;

Ryota Take, Takahashi, JP;

Assignee:

Sumitomo Electric Sintered Alloy, Ltd., Takahashi, JP;

Attorneys:

Baker Botts L.L.P.

Michael A. Sartori

Primary Examiner:

Daniel J Schleis

Assistant Examiner:

Kevin C T Li

Int. Cl.
CPC ...
B22F 3/10 (2006.01); B22F 3/02 (2006.01); C22C 38/00 (2006.01); B22F 3/16 (2006.01); B22F 1/00 (2006.01); C22C 38/18 (2006.01); C22C 38/04 (2006.01); C22C 38/08 (2006.01); C22C 38/16 (2006.01); C22C 38/22 (2006.01); C22C 38/44 (2006.01); C22C 38/12 (2006.01);
U.S. Cl.
CPC ...
B22F 3/162 (2013.01); B22F 1/007 (2013.01); C22C 38/00 (2013.01); C22C 38/04 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/16 (2013.01); C22C 38/18 (2013.01); C22C 38/22 (2013.01); C22C 38/44 (2013.01); B22F 2301/35 (2013.01); B22F 2998/10 (2013.01);
Abstract

Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.

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