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| Experimental study on tool wear during turning 42CrMo steel |
| ZENG Xiang-lu，LIANG Jun-hua，HAN Jun-feng |
| Sichuan Engineering Technical College，Deyang 618000，China |
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Abstract In this experiment，42CrMo steel was cutted under certain cutting conditions，and the wear morphology
of the tool rake and tool flank surfaces during 1 035 s machining was studied. The results show that the brightness
of the cutting area and the wear area of the tool rake face increase when the cumulative processing time T increases
from 0 to 1 035 s. When the processing time T is at 1 035 s，the tool rake face wear is obvious，and there
are dark wear area，high brightness part of tool coating material wear area and obvious abrasive wear area. When
the processing time T increases from 0 to 435 s，obvious wear band appears on the tool flank face，and the wear
band of coating material increases gradually. When the processing time T increases from 435 s to 1 035 s，the wear
band increases slowly and the tool substrate material wear occurs. With the increase of wear time，the tool substrate
material wear increases gradually. When the processing time T increases from 48 s to 1 035 s，the surface
roughness Ra increases from 3.46 μm to 3.91 μm.
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Received: 04 March 2020
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2020, Vol. 30 
