摘要
在不同切削参数下，对32Cr3NiMoVA超高强度钢高速铣削过程中产生的切屑形态进行试验，采用 VHX 500F型光学显微镜对切屑的自由表面和后表面进行分析．试验结果表明，在每齿进给量0．2 mm／r、切削深度0．5 mm和切削速度200～1000 m／m in的范围内，形成适宜切削的螺旋状切屑，并且随着速度的增加，螺旋状切屑的直径先减少后趋于稳定值，切屑的锯齿化程度随切削速度、每齿进给量和切削深度的增加而增大．
An experimental investigation of chip morphologies in high‐speed dry milling of 32Cr3NiMoVA steel was conducted over a variety of different cutting parameters .The free surface and the back surface of the chip were investigated through VHX 500F optical microscope .The experimental results showed that ,with 0 .2 mm/r feed per tooth ,0 .5mm cutting depth and 200 to 1 000 m/min cutting speed ,a suit‐able cutting chip of helical chip was formed;and with the cutting speed increased ,the diameter of the hel‐ical chip reduced at first but eventually stabilized at a relatively constant value .The degree of chip serra‐tion was more pronounced and evident with the increase in cutting speed ,feed per tooth and cutting depth .T he variation in chip serration should be attributed to the reinforcement of coupled thermo‐me‐chanical behavior in the cutting process with the increase in machining parameters .
出处
《吉首大学学报（自然科学版）》
CAS
2015年第3期56-60,共5页
Journal of Jishou University(Natural Sciences Edition)
关键词
超高强度钢
高速铣削
切削参数
螺旋状切屑
32Cr3NiMoVA
ultra-high-strength steel
32cr3niMoVa
high-speed milling
cutting parameters
helical chip
