STUDY ON CHIPS’ MORPHOLOGY AT CONVENTIONAL AND ENVIRONMENTAL-FRIENDLY TURNING OF 42CrMo4 ALLOYED STEEL
This paper is a part of a large research concerning the orthogonal turning of 42CrMo4 alloyed steel, a widely used material, under conventional and environment-friendly cutting conditions. The approach consists of series of tests and an experimental study with respect to cutting parameters and conditions such as: depth of cut, cutting speed, feed rate and flow rate of cooling-lubrication environment. Two ecological cooling-lubricating techniques have been used: dry cutting and minimal lubrication. Just for comparison reasons, the conventional flood cooling has also been considered. The goal of the study concerns the analysis of chips shape, an important criterion for evaluation of the cutting processes. The results show a limited influence of the cooling and lubrication conditions on changes in chip’s morphology and shape, when the feed rate ranges in low and medium domain. More convenient and easier to remove chips are getting by increasing the depth of cut and feed rate.
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turning; dry cutting; lubrication; cooling; surface roughness; machine load; chip formation
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