Experimental and numerical study of chip formation during straight turning of hardened AISI 4340 steel
Experimental and numerical study of chip formation during straight turning of hardened AISI 4340 steel
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DOI：
10.1243/095440505x32445
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发表时间：
2005-07
期刊：
影响因子：
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通讯作者：
S. Belhadi;Tarek Mabrouki;J. Rigal;L. Boulanouar
中科院分区：
文献类型：
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作者：
S. Belhadi;Tarek Mabrouki;J. Rigal;L. Boulanouar
Abstract The present paper is a contribution to the investigation of physical phenomena accompanying sawtooth chip formation in the case of hard turning. The study concerns the machining with coated carbide of tempered AISI 4340 steel with a Rockwell C hardness of 47 HRC. The main idea in this paper deals with the establishment of a direct relationship between serrated-chip morphology simultaneously with force component signals derived from acquisition at high frequency and with the width of facets detected on a workpiece machined surface. This experimental work was supported by a numerical simulation based on Abaqus/ Explicit software. Numerical results dealing with effect of temperature evolution on the chip morphology show that the beginning of the sawtooth chip initiation is due to an adiabatic shear at the tool tip with propagation pathway towards the free surface. In addition, computed results have a good corroboration with those obtained experimentally.
