钻削车用CFRP材料的DLC涂层合金钻头的性能研究  

CFRP board drilling performance studying for carbide drill bit with DLC coating

作　　者：汪洋[1] 杨兰杰 WANG Yang;YANG Lanjie(Zhejiang Technical Institute of Economics,Hangzhou 310018,China;Geely Commercial Vehicles Croup Co.,Ltd.,Hangzhou 310018,China)

机构地区：[1]浙江经济职业技术学院,杭州310018 [2]浙江吉利新能源商用车集团有限公司,杭州310018

出　　处：《现代制造工程》2024年第12期108-113,共6页Modern Manufacturing Engineering

基　　金：浙江省教育厅一般科研基金项目(Y202250419)。

摘　　要：汽车碳纤维材料的钻孔加工面临钻头寿命短、加工质量差的问题。DLC涂层具有摩擦系数低、表面硬度高的优点,可以有效地提高切削刀具的使用寿命。通过对无涂层、DLC涂层、Cr/W-DLC/DLC涂层和Cr/CrN/DLC涂层的4组整体硬质合金钻头样品的对比测量,采集不同涂层的摩擦系数和表面硬度以及表面粗糙度数据,得出所有DLC涂层都有低摩擦系数和可改善表面粗糙度的优点。同时对4组样品进行钻孔性能测试,采集钻削扭力、钻削温度、钻削速度以及钻头刃口的磨损量等数据,发现Cr/CrN/DLC复合涂层能有效地提高加工CFRP钻头的使用寿命,其平均寿命是无涂层钻头的2.65倍,且性能稳定。The drill bit for carbon fiber reinforced plastics machining facing the issues like short running life and bad machining quality.Carbide drill bits with DLC coating would be a good solution to increase the life of drill bits which with lower frictional coefficient and higher surface hardness.4 groups of samples had been studied like uncoated carbide drill bits,monolayer DLC coating,Cr/W-DLC/DLC and Cr/CrN/DLC composite coating.By comparing the frictional coefficient,surface hardness and roughness of different coatings,the data showed that all the drill bits with DLC coating had advantage of low frictional coefficient and could improve the surface roughness.The data of cutting torque force,cutting temperature,cutting speed and frank wear from 4 groups of samples′ drilling testing showed that the composite coating of Cr/CrN/DLC provided best service life and much more stable performance,its service life was 2.65 times of the drills without coating.

关 键 词：CFRP 硬质合金钻头 DLC复合涂层 钻削性能 

分 类 号：TQ327.3[化学工程—合成树脂塑料工业]