Measurement of Friction in Cold Upsetting with Mist Lubrication
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- Matsumoto Ryo
- Graduate School of Engineering Science, Osaka University
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- Osakada Kozo
- Graduate School of Engineering Science, Osaka University
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The coefficient of friction during upsetting under semi-dry conditions is measured using the ring compression test. A small amount of mist lubricant is sprayed onto the mirror surfaces of cemented tungsten carbide (WC) tools, and pure aluminium specimens are compressed by the tools. It is found that spraying a small amount of lubricant (0.5 g/m2) reduces the friction effectively. The roughness of the workpieces after compression increases as the amount of the lubricant increases to Ra = 0.20—1.0 μm which is in the same order as the lubricant film thickness. Mist lubrication results in very small dots of lubricant particles sticking to the tool surface, and the lubrication mechanism of mist lubricant is discussed.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 45 (9), 2891-2896, 2004
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679227951104
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- NII論文ID
- 130004452595
- 10013580025
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD2cXpvV2gsLg%3D
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 7088216
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可