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| PROPERTIES OF IRON-GRAPHITE POROUS BEARINGS |
| HUANG YUNG-SHU AND WU TZU-LIANG Institute of Metallurgy and Ceramics;Academia Sinica |
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Cite this article:
HUANG YUNG-SHU AND WU TZU-LIANG Institute of Metallurgy and Ceramics;Academia Sinica. PROPERTIES OF IRON-GRAPHITE POROUS BEARINGS. Acta Metall Sin, 1958, 3(4): 300-305.
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Abstract The antiseizure property of the iron-graphite porous bearings can be improved by using purer grades of iron powder.A grade of iron powder of>98% Fe,processed by the reduction of rimmedsteel mill scale with charcoal,is found to be suitable for this purpose.Bearings made of a coarsegrade iron powder(～80%>0.06mm)and containing～1.5% graphite give a good combinationof mechanical strength and antifriction properties.When the graphite content is lower than 0.5%,excessive free ferrite in the matrix results seizure between the rubbings surfaces.On the other hand,with the graphite content in excess of 3.0%,voluminous free carbide in the matrix induces heavymechanical wear.In comparison with the bronze-graphite porous bearings of the same hardness,an iron-graphite porous bearing possesses a higher strength,a larger oil content,a smaller coefficientof friction and less wear loss.
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Received: 18 April 1958
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[1] 吴自良等,青铜-石墨含油轴承的压制及烧结,金属研究工作报告会会刊,第三卷(1954) 151。
[2] #12
[3] #12
[4] #12
[5] 卢肇基、沈邦儒、金大康、吴自良:(a)氧化铁还原的速率,金属学报,第3卷第2期(1958． 6． )111。(b)用木炭还原法从沸腾钢铁鳞制取铁粉(已送钢铁杂志发表)。 |
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