公开(公告)号：US20150232966A1

公开(公告)日：2015-08-20

申请号：US14427157

申请日：2013-08-21

Applicant: NTN CORPORATION

Inventor： Toshihiko Mouri ,  Hiroharu Nagata

IPC: C22C33/02 ,  B22F3/12 ,  F01L1/047 ,  C22C38/16 ,  C22C38/00 ,  B22F1/00 ,  B22F5/00

CPC classification number: C22C33/0257 ,  B22F1/007 ,  B22F3/10 ,  B22F3/1035 ,  B22F3/11 ,  B22F3/12 ,  B22F5/00 ,  C22C33/02 ,  C22C38/008 ,  C22C38/16 ,  F01L1/047 ,  F01L1/3442 ,  F01L2001/34479 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2103/01

Abstract: Raw material powder containing iron powder, copper powder, and tin powder is compressed to form a green compact. The green compact is sintered in a temperature range of from 750 to 900° C., to bond iron structures to each other with copper and tin.

Abstract translation: 将含有铁粉，铜粉和锡粉的原料粉末压缩成生坯。 生坯在750-900℃的温度范围内烧结，用铜和锡将铁结构彼此接合。

公开(公告)号：US11306778B2

公开(公告)日：2022-04-19

申请号：US15021283

申请日：2014-09-11

Applicant: NTN CORPORATION

Inventor： Yoshinori Ito ,  Hiroharu Nagata ,  Tomoyuki Seto ,  Takahiro Gotou

IPC: F16C33/12 ,  C22C9/01 ,  B22F3/10 ,  F16C33/14 ,  C22C1/04 ,  C22C32/00 ,  B22F5/10 ,  B22F5/00 ,  B22F1/00 ,  B22F3/16 ,  B22F3/24

Abstract: Provided is a sintered bearing for an EGR valve, including raw material powder including 9% by weight to 12% by weight of aluminum, 0.1% by weight to 0.6% by weight of phosphorus, 3% by weight to 10% by weight of graphite, and the balance including copper as a main component, and inevitable impurities. The sintered bearing has a structure of a sintered aluminum-copper alloy. The sintered bearing further includes free graphite distributed in pores formed so as to be dispersed.