Study on Wear Mechanism of Rake Face in High Speed Milling of ADC12 Aluminum Alloy
In order to study the tool wear on the rake face during high speed milling of ADC 12 aluminum alloy,exper-iments are carried out using fine-grain uncoated cemented carbide inserts.The changing rule of cutting force under different cutting speeds and cutting lengths,and their effects on tool wear are studied and analyzed.Two evaluation methods for the adhesion degree of the rake face are proposed.The wear form of rake face is discussed,and the mechanism of adhesive wear is deeply analyzed by observing the wear morphology of tool surface and quantifying the surface chemical elements.The re-sults show that the adhesion wear on rake face reach the most serious stage at the condition of cutting speed 600m/min,and the aluminum content is recorded to be 67.61％,which is caused by the larger cutting force at this condition.And the bond-ing area of tool rake face achieves the maximum with approximately 0.01286mm2 at 600m/min.Furthermore,adhesive wear occurrs due to the coupling effect of force and heat on the contact area between the tool and the workpiece material,and cra-ter wear is accompanied under the combined action of abrasive and adhesion wear.
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