Tungsten carbide cutting tool AlSiCp nano composite material is divided into mechanism of tool wear mechanism analysis, a composite material removal mechanism and cutting parameters influence on tool wear three parts. Because of Al / SiCp SiC particulate material hardness (microhardness HV = 27GPa) higher than tungsten carbide (YG class tool material microhardness HV = 16 ~ 18GPa, nano-carbide WC-7Co microhardness HV = 22GPa), therefore, with tungsten carbide cutting tool Al / SiCp composites quickly when worn or damaged. Before and after the cutting tool flank and observed daily post-processing, there is found to the rake face bright visible white band can be seen under the microscope parallel to the flow direction of the chip grooves, since the chip contains a lot of SiC particles, in before flowing along the flank when the chips, the chip on the bottom of the SiC particles generated rake micro-cutting role in the formation of the grooves.
2014年11月20日星期四
Nano Tungsten Carbide Cutting Tool Al / SiCp Composite Material Mechanism
Tungsten carbide cutting tool AlSiCp nano composite material is divided into mechanism of tool wear mechanism analysis, a composite material removal mechanism and cutting parameters influence on tool wear three parts. Because of Al / SiCp SiC particulate material hardness (microhardness HV = 27GPa) higher than tungsten carbide (YG class tool material microhardness HV = 16 ~ 18GPa, nano-carbide WC-7Co microhardness HV = 22GPa), therefore, with tungsten carbide cutting tool Al / SiCp composites quickly when worn or damaged. Before and after the cutting tool flank and observed daily post-processing, there is found to the rake face bright visible white band can be seen under the microscope parallel to the flow direction of the chip grooves, since the chip contains a lot of SiC particles, in before flowing along the flank when the chips, the chip on the bottom of the SiC particles generated rake micro-cutting role in the formation of the grooves.
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