Title:
焼結バルブガイド材およびその製造方法
Document Type and Number:
Japanese Patent JP5783456
Kind Code:
B2
Abstract:
A sintered material for valve guides consists of, by mass %, 0.01 to 0.3 % of P, 1.3 to 3 % of C, 1 to 4 % of Cu, and the balance of Fe and inevitable impurities. The sintered material exhibits a metallic structure made of pores and a matrix. The matrix is a mixed structure of a pearlite phase, a ferrite phase, an iron-phosphorus-carbon compound phase, and a copper phase, and a part of the pores including graphite that is dispersed therein. The iron-phosphorus-carbon compound phase is dispersed at 3 to 25 % by area ratio, and the copper phase is dispersed at 0.5 to 3.5 % by area ratio, with respect to a cross section of the metallic structure, respectively.
Inventors:
Hiroki Fujitsuka
Hideaki Kawada
Hideaki Kawada
Application Number:
JP2011211786A
Publication Date:
September 24, 2015
Filing Date:
September 28, 2011
Export Citation:
Assignee:
Hitachi Chemical Co., Ltd.
International Classes:
C22C38/00; B22F1/00; B22F3/10; B22F5/00; C22C33/02; F01L3/08
Domestic Patent References:
| JP9053421A | ||||
| JP6306554A | ||||
| JP6041699A | ||||
| JP2006052468A | ||||
| JP2010077515A |
Attorney, Agent or Firm:
Suenari Mikio