On the Tool Failure of Carbide End Mill in Machining a Steel : The Relation among Microstructure and Tool Life

End mills of micro alloy, K-grade and M-grade carbide tools are prepared and a carbon steel of S48C is tested in cutting. The cutting temperature is below the recrystalization temperature of the steel. The conclusions obtained in this experiment are as follows: (1) The cutting forces were not influe...

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Bibliographic Details
Published inTransactions of the Japan Society of Mechanical Engineers Series C Vol. 54; no. 500; pp. 976 - 983
Main Authors KITAGAWA, Ryozo, FUJITA, Takeo
Format Journal Article
LanguageJapanese
Published The Japan Society of Mechanical Engineers 1988
Subjects
Carbide Tool
Cutting
End Milling
Microstructure
Tool Life
Tool Wear
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Summary:End mills of micro alloy, K-grade and M-grade carbide tools are prepared and a carbon steel of S48C is tested in cutting. The cutting temperature is below the recrystalization temperature of the steel. The conclusions obtained in this experiment are as follows: (1) The cutting forces were not influenced by the carbide grade. (2) The cutting temperature of the atomize-cooling method was about 45°C lower than that of the dry method. (3) The K-grade tools showed longer tool lives than those of M-grade is this experiment. (4) It is found that the cutting ability of the end mill was associated with microstructure, mean free path and fracture toughness.
ISSN:0387-5024
1884-8354
DOI:10.1299/kikaic.54.976