亜共析黒鉛鋼の被削性

• 末吉 秀一

  鹿児島大学工学部機械工学第二学科

• 大重 俊則

  鹿児島大学大学院生，現在：京セラ株式会社

• 末永 勝郎

  鹿児島大学工学部機械工学第二学科，現在：鹿児島大学名誉教授

• 田中 良平

  横浜国立大学工学部生産工学科

書誌事項

タイトル別名

• Machinability of Hypo-Eutectoid Graphitic Steels
• アキョウセキ コクエン コウ ノ ヒサクセイ

抄録

In order to develop a new type of free cutting steel, machinability tests have been carried out for a series of hypo-eutectoid graphitic steels composed of ferrite matrices and graphite nodules.<BR>In the presence of the graphite nodules the frictional coefficient between tool and chip decreased and the shear angle of chip increased. Therefore, the cutting forces decreased with increasing volume fraction of graphite. The lubrication effect of the graphite nodules became remarkable as the mean diameter of the graphite nodule increased and the mean ferrite path between graphite nodules decreased.<BR>The hypo-eutectoid graphitic steels exhibited an excellent chip-disposability because the curvature of chip is small and the graphite nodules promotes the crack propagation in chip.<BR>The influence of graphite nodules on the surface roughness was found to be disregarded from a practical point of view.<BR>It was concluded that the hypo-eutectoid graphitic steel having an appropriate structure of matrices and graphite nodules can be good free cutting structural steel.

収録刊行物

• 日本金属学会誌

  日本金属学会誌 52 (12), 1285-1292, 1988

  公益社団法人 日本金属学会

キーワード

• hypo-eutectoid graphitic steels
• machinability test
• cutting force
• chip-disposability
• surface roughness
• microstructural factors

詳細情報

• CRID: 1390282681460995072
• NII論文ID: 130007336960
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet1952.52.12_1285
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 3209559
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3209559
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/52/12/52_12_1285/_pdf
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