Study On Tool Wear Mechanism Of The Cemented Carbide At High Speed Cutting Titanium Alloy With MQL

The titanium alloy had been more optimization as the material with its excellentspecific strength, corrosion resistance and thermal strength and other comprehensivecharacteristics in modern aviation manufacturing. However, titanium alloy areconsidered as typical difficult-to-cut materials due to the small deformation coefficient,high chemical activity, severe cold hard phenomenon and the inherent properties ofsmall elastic modulus. High cutting temperature and tool wear easily, low machiningefficiency problems greatly limit the cutting machining of titanium alloy.In order to prolong the life of cutting tools, commonly method is pouring coolingfluid, actually this way not only poor cooling effect, but damage to the environment. TheMQL technology has been widely used in the cutting of titanium alloy which caneffectively reduce the temperature of cutting area, and little pollution to the environmentas a kind of green manufacturing technology. This topic main research wearcharacteristics and the wear mechanism of cemented carbide tool cutting titanium alloyunder the condition of MQL and comparison analysis tool wear mechanism under theconditions of dry cutting and coolant pouring mode. Under the condition of dry cutting,study on the tool wear characteristics through of changed the cutting speed. Through theanalysis tool wear condition of different type, compare the tool wear characteristics withdry cutting conditions and MQL condition. Study on the blade channel to the influenceof tool wear under the condition of dry cutting, through the way of experiment andsimulation.Through experimental study on the different type wear mechanism which isadhesion wear, oxidative wear and diffusion wear in dry cutting condition. Tool wearmechanism is mainly adhesion wear, and accompanied by oxidation wear and diffusionwear under the MQL condition. Compared with the cooling fluid way and MQLconditions which can effectively improve the face and flank wear extent, furthermorehas certain limit condition of MQL cutting speed which be much exacerbate the toolwear rate under the MQL condition. Compared with the different type of tools which thebest property is H13A-QM and the worst is GC1115-QM. Compared with the SM and QM in simulation results and experiment way which show that SM blade groove of toolcutting performance is more stable, much smaller tool wear degree.