Experimental Study on Carbide Coated Tools Milling Surfacing Alloy
The reasonable machining parameters and coating tool wear mechanism of the experimental surfacing alloy were ana-lyzed.Adopt inverter dc welding machine and special hardfacing electrode containing rare earth,surfacing welding was carried out on the surface of the test plate,with CNC milling machine grouping processing surfacing welding alloy of surfacing welding layer,respectively,component testing and microstructure analysis,the test with APMT1604PDER cemented carbide coating tools for the metallographic analysis and electron microscopy morphology observation and energy spectrum analysis,The milling surface characteristics and wear analysis of cutter coating and internal matrix under different parameters and processing amount were studied.When 4 tooth cutters are used in CNC milling machine,the reasonable processing parameters of the test surfacing of alloy material with the same feed per tooth are n:400r/min,VF:≤80mm/min,ap:≤0.2mm.The surface coating of the test tool was AlTiN type,and the tool matrix material was mainly composed of irregular cobalt carbide and tungsten carbide alloy powder of 500nm～2µm.The failure modes of the test tool are:abrasive wear in the early stage,bonding wear and diffusion wear in the middle and late stage.
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