Manufacturing and Performance of Spheroidal Graphite Cast lron Gear : 1st Report, An Application to Medium-hardness Gears
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概要
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For saving energy and resources, the spheroidal graphite cast iron is tentatively used as gear material. It has many advantages in manufacturing and physical properties. The authors apply this material to medium-hardness gears which are used in medium or large size gear units. First, new materials--3 kinds of JIS FCD60 by various heat treatments and as-cast FCD70--are produced by way of trial. From the machinability tests of these materials by turning, it is clear that the as-cast FCD70 has the best machinability in terms of cutting force and tool life. Second, the hobbing surface roughness to hardened and tempered steel. Third, the surface durability of as-cast FCD70 is investigated by using a 2 roller-type contact fatigue testing machine. It indicates that the pitting fatigue life of the as-cast FCD70 is longer than that of hardened and tempered steel. Consequently, the as-cast FCD70 is applicable to medium-hardness gears in terms of manufacturing and surface durability.
- 一般社団法人日本機械学会の論文
著者
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NAKANISHI Tsutomu
Faculty of Pharmaceutical Sciences,Setsunan University
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ARIURA Yasutsune
Faculty of Engineering, Kyushu University
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Umezaki Y
Kyushu Univ. Fukuoka Jpn
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Umezaki Yoji
Faculty Of Engineering Kyushu University
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Nakanishi T
Miyazaki Univ. Miyazaki Jpn
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UENO Taku
Faculty of Engineering, Kyushu Industrial University
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TAKAHASHI Ryoji
Nishi-Nippon Institute of Technology
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Ueno Taku
Faculty Of Engineering Kyushu Sangyo University
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Ariura Y
Kyushu Univ. Fukuoka Jpn
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Ariura Yasutsune
Faculty Of Engineering Kyushu University
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Taku Ueno
Fac. Of Engng. Kyushu Indust. Univ.
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Nakanishi Tsutomu
Faculty Of Pharmaceutical Sciences Setsunan University
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Arlura Yasutsune
Fac. Of Engng. Kyushu Univ.
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Nakanishi Tsutomu
Faculty Of Engineering Miyazaki University
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