蠕墨铸铁绿色车削性能研究

Study on Mechanical Properties of Compacted Graphite Iron (CGI) in Green Turning

通过在干切削、MQL、微量油膜附水滴三种绿色切削方式下进行蠕墨铸铁切削加工的对比试验,研究了不同涂层刀具下的切削力、切削温度、表面粗糙度、刀具磨损以及不同类型的润滑油对车削蠕墨铸铁的影响。研究结果表明:在切削速度小于80m/min时,干切削、MQL、微量油膜附水滴三种冷却方式下的切削力相差不大;在切削速度大于80m/min时,微量油膜附水滴冷却润滑技术对切削力的影响显著;不同冷却方式下,需要配合使用合适的涂层刀具才能获得最小的切削力、最低的切削温度、最小的表面粗糙度以及最低的刀具磨损率;不同类型的切削油对切削温度、表面粗糙度、后刀面磨损产生不同影响,其中,2000-10润滑油可以获得高的表面质量,2000-25润滑油可以获得低切削温度以及较低的刀具磨损率。

Through three ways of dry cutting,MQL,Oils on Water turning compacted graphite iron,cutting force,cutting temperature,surface roughness,tool wear of different coated tool＇s and different types of lubricant＇s influences on turning compacted graphite iron are studied. The experimental results illustrate that when the cutting speed is less than 80 m/min,the cutting force under dry cutting,MQL and Oils on Water is not much different. When the cutting speed is more than80 m/min,the Oils on Water has a significant effect on the cutting force. Using different cooling methods,the appropriate coating tool is necessary to get the minimum cutting force,minimum cutting temperature,minimum surface roughness and lowest tool wear rate. Different types of cutting oil have different effects on the cutting temperature,surface roughness,flank wear,which 2000-10 lubrication oil can get higher surface quality. Using 2000-25 lubrication oil can get lower cutting temperature and lower tools wear rate.