IP Library › Patent Application 10992466

Patent Application

App. No. 10/992,466

Method for manufacturing Fe-based sintered alloy member having excellent dimensional accuracy, strength and sliding performance

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App. No.: 10/992,466

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Abstract

In a method of manufacturing an Fe-based sintered alloy member having excellent dimensional accuracy, strength, and sliding performance, and having a composition comprising: Cu: 0.5 to 7 wt %; C: 0.1 to 0.98 wt %; oxygen: 0.02 to 0.3 wt %; as needed, Mn: 0.0025 to 1.05 wt % and/or Zn: 0.001 to 0.7 wt %; and a balance of Fe and inevitable impurities by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture, in which the Cu alloy powder blended as the base powder has a composition comprising: Fe: 1 to 10 wt %; oxygen: 0.2 to 1 wt %; as needed, Zn: 0.2 to 10 wt % and/or Mn: 0.5 to 15 wt %; and a balance of Cu and inevitable impurities.

Claims (131)

1 . A method of manufacturing an Fe-based sintered alloy member, comprising:

producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising:

Fe: 1 to 10 wt %;

oxygen: 0.2 to 1 wt %; and

a balance of Cu and inevitable impurities.

2 . A method of manufacturing an Fe-based sintered alloy member comprising:

producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %;

Mn: 0.0025 to 1.05 wt %; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising one or two among 1 to 10 wt % of Fe, 0.2 to 1 wt % of oxygen, and 0.5 to 15 wt % of Mn; and a balance of Cu and inevitable impurities.

3 . A method of manufacturing an Fe-based sintered alloy member comprising:

producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %;

Zn: 0.001 to 0.7 wt %; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising:

Fe: 1 to 10 wt %;

oxygen: 0.2 to 1 wt %;

Zn: 0.2 to 10 wt %; and

a balance of Cu and inevitable impurities.

4 . A method of manufacturing an Fe-based sintered alloy member comprising:

producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %;

Mn: 0.0025 to 1.05 wt %;

Zn: 0.001 to 0.7 wt %; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising:

Fe: 1 to 10 wt %;

oxygen: 0.2 to 1 wt %;

Zn: 0.2 to 10 wt %;

Mn: 0.5 to 15 wt %; and

a balance of Cu and inevitable impurities.

5 . A method of manufacturing an Fe-based sintered alloy member comprising:

producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %;

one or both of Al and Si: 0.001 to 0.14 wt % in total; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising:

Fe: 1 to 10 wt %;

oxygen: 0.2 to 1 wt %;

one or both of Al and Si: 0.01 to 2 wt % in total; and

a balance of Cu and inevitable impurities.

6 . A method of manufacturing an Fe-based sintered alloy member having excellent dimensional accuracy, strength, and sliding performance, and comprising:

producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %;

Mn: 0.0025 to 1.05 wt %;

one or both of Al and Si: 0.001 to 0.14 wt % in total; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising:

one or two among 1 to 10 wt % of Fe, 0.2 to 1 wt % of oxygen and 0.5 to 15 wt % of Mn;

one or both of Al and Si: 0.01 to 2 wt % in total; and

a balance of Cu and inevitable impurities.

7 . A method of manufacturing an Fe-based sintered alloy member comprising:

producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %;

Zn: 0.001 to 0.7 wt %;

one or both of Al and Si: 0.001 to 0.14 wt % in total; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising:

Fe: 1 to 10 wt %;

oxygen: 0.2 to 1 wt %;

Zn: 0.2 to 10 wt %;

one or both of Al and Si: 0.01 to 2 wt % in total; and

a balance of Cu and inevitable impurities.

8 . A method of manufacturing an Fe-based sintered alloy member comprising:

Producing said Fe-based sintered alloy member having a composition comprising:

Cu: 0.5 to 7 wt %;

C: 0.1 to 0.98 wt %;

oxygen: 0.02 to 0.3 wt %;

Mn: 0.0025 to 1.05 wt %;

Zn: 0.001 to 0.7 wt %;

one or both of Al and Si: 0.001 to 0.14 wt % in total; and

a balance of Fe and inevitable impurities, by blending and mixing an Fe powder, a graphite powder, and a Cu alloy powder as a base powder and by forming and sintering the resultant mixture,

wherein the Cu alloy powder blended as the base powder has a composition comprising:

Fe: 1 to 10 wt %;

oxygen: 0.2 to 1 wt %;

Zn: 0.2 to 10 wt %;

Mn: 0.5 to 15 wt %;

one or both of Al and Si: 0.01 to 2 wt % in total; and

a balance of Cu and inevitable impurities.

9 . The method of manufacturing an Fe-based sintered alloy member according to claim 1 ,

wherein a blending ratio of the Fe powder, the graphite powder and the Cu alloy powder is as follows:

the graphite powder: 0.1 to 1.2 wt %;