精密切削加工Inconel718镍基高温合金的涂层硬质合金刀具磨损试验研究

Experimental Study on Tool Wear of Coated Cemented Carbide Tools in Precision Cutting of Nickel-based Superalloy Inconel718

Inconel718镍基高温合金适用于高温高压、高频应力应变及腐蚀环境,被广泛应用于核电、航天、航空等领域。针对核级Inconel718镍基高温合金开展精密切削加工试验,研究不同工艺参数对涂层硬质合金刀具磨损的影响。结果表明:涂层硬质合金刀具前后刀面极易发生磨损,出现月牙洼磨损、沟槽磨损以及崩刃;车削三要素中进给量对后刀面磨损量VB的影响最为明显,随着进给量的增大,后刀面磨损量VB逐渐减小。

Nickel-based superalloy Inconel718 is widely used in nuclear power,aerospace,aviation and other fields due to its excellent performance under high temperature,high pressure,high frequency stress and strain and corrosion conditions.In this paper,precision cutting experiments of nuclear grade nickel-based superalloy Inconel718 are carried out to study the influence of different process parameters on the wear of coated carbide tool.The results show that the coated carbide cutting tools are easy to wear on the front and rear surfaces,such as crater wear,grooves and chipped blade.Among the three factors of turning,the feed has the most obvious effect on the VB of the rear cutting surface wear,and the VB gradually decreases with the increase of the feed.