IDiyas

For the Inventor, By the Inventor

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 9803268 B1

PDFFull Text
Date of Patent:
Oct. 31, 2017

Filed:

Mar. 31, 2015

Iron-base sintered alloy material for valve seat insert and method for manufacturing the same

Applicant:

Nippon Piston Ring Co., Ltd., Saitama, JP;

Inventors:

Hiroshi Oshige, Tochigi, JP;

Satoshi Ikemi, Tochigi, JP;

Assignee:

NIPPON PISTON RING CO., LTD., Saitama, JP;

Attorney:

Young & Thompson

Primary Examiner:

Jessee Roe

Assistant Examiner:

Ngoclan T Mai

Int. Cl.
CPC ...
C22C 38/50 (2006.01); C22C 38/58 (2006.01); B22F 3/12 (2006.01); B22F 5/10 (2006.01); C22C 1/04 (2006.01); C22C 1/05 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/52 (2006.01); F01L 3/08 (2006.01); C22C 33/02 (2006.01); F01L 3/02 (2006.01); B23P 15/00 (2006.01); B22F 5/00 (2006.01); B22F 1/00 (2006.01);
U.S. Cl.
CPC ...
C22C 38/58 (2013.01); B22F 3/12 (2013.01); B22F 5/008 (2013.01); B22F 5/10 (2013.01); B22F 5/106 (2013.01); B23P 15/002 (2013.01); C22C 1/0491 (2013.01); C22C 1/05 (2013.01); C22C 33/0207 (2013.01); C22C 33/0285 (2013.01); C22C 33/0292 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/52 (2013.01); F01L 3/02 (2013.01); F01L 3/08 (2013.01); B22F 1/0059 (2013.01);
Abstract

An iron-base sintered alloy material includes a matrix phase, Co base inter-metallic compound particles having hardness of 600 to 1200 HV, carbide-type particles having hardness of 400 to 700 HV, and optionally solid-lubricant particles, the particles being dispersed in the matrix phase. A matrix part including the matrix phase and the two kinds of hard-particles contains 0.3 to 1.5% by mass of C, and 10 to 50% by mass of one or more kinds selected from Si, Mo, Cr, Ni, Co, Mn, S, N, V, Ca, F, Mg, and O, the balance being Fe and unavoidable impurities. By dispersing, in the matrix phase, the Co base inter-metallic compound particles having high hardness, and the carbide-type particles having low hardness and low aggressiveness to mated material and increasing mechanical strength, wear-resistance can be improved with low aggressiveness to mated material and high radial crushing strength (350 MPa or more).

Find Patent Forward Citations

Loading…