Finish Cutting of Carbide Mold with Thermally Affected Layer by Diamond Tool

Kazuki Imazato; Koichi Okuda; Hiroo Shizuka; Masayuki Nunobiki

doi:10.4028/www.scientific.net/AMR.565.382

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 565Finish Cutting of Carbide Mold with Thermally...

Finish Cutting of Carbide Mold with Thermally Affected Layer by Diamond Tool

Abstract:

This paper deals with finish cutting of thermally affected layer on cemented carbide by a diamond tool in order to machine efficiently the carbide mold with high accuracy and good surface without a polishing. The microstructure of thermally affected layer left by EDM process was observed and analyzed by EPMA. Its hardness and thickness were measured. Subsequently, the cutting experiments were carried out by using a PCD tool and an ultra-precision cutting machine. The effects of the thermally affected layer on the surface roughness, the cutting force and the tool wear were investigated. As a result, it was confirmed that the cutting force decreased with an increase in the depth of cut. Furthermore, it was found that the tool wear and the surface roughness obtained by cutting the thermally affected layer were greater than those of the original workpiece.

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Periodical:

Advanced Materials Research (Volume 565)

Pages:

382-387

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.565.382

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Online since:

September 2012

Authors:

Kazuki Imazato, Koichi Okuda, Hiroo Shizuka, Masayuki Nunobiki

Keywords:

Cemented Carbide, Diamond Cutting, Surface Roughness (SR), Tool Wear

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