ADC12铝合金高速铣削前刀面磨损机理研究  

Study on Wear Mechanism of Rake Face in High Speed Milling of ADC12 Aluminum Alloy

作　　者：禹杰 米少伟 林有希[2] Yu Jie;Mi Shaowei;Lin Youxi(Mechanical and Electrical Engineering Practice Center,Fuzhou University,Fuzhou 350108,China;不详;College of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]福州大学机电工程实践中心 [2]福州大学机械工程及自动化学院

出　　处：《工具技术》2024年第1期42-48,共7页Tool Engineering

基　　金：国家自然科学基金(51975123)。

摘　　要：为了深入研究ADC12铝合金高速铣削中刀具前刀面磨损行为,采用细晶粒硬质合金刀片进行铣削试验,研究了不同切削速度和切削长度下的切削力变化规律以及对刀具磨损的影响,提出两种前刀面黏结程度评价方法,通过刀具磨损形貌观察及表面化学元素分析,探讨了前刀面的磨损形式,深入剖析了黏结磨损机理。结果表明:切削速度为600m/min时,刀具前刀面黏结最为严重,Al元素含量约为67.61%,这与该速度下切削力较大有关;采用黏结面积法发现,切削速度为600m/min时的刀具前刀面黏结面积同样达到最大,约为0.01286mm^(2);在刀具和工件材料接触区域,由于热—力耦合冲击产生黏结磨损,并在磨粒磨损共同作用下出现月牙洼磨损。In order to study the tool wear on the rake face during high speed milling of ADC12 aluminum alloy,experiments are carried out using fine-grain uncoated cemented carbide inserts.The changing rule of cutting force under different cutting speeds and cutting lengths,and their effects on tool wear are studied and analyzed.Two evaluation methods for the adhesion degree of the rake face are proposed.The wear form of rake face is discussed,and the mechanism of adhesive wear is deeply analyzed by observing the wear morphology of tool surface and quantifying the surface chemical elements.The results show that the adhesion wear on rake face reach the most serious stage at the condition of cutting speed 600m/min,and the aluminum content is recorded to be 67.61%,which is caused by the larger cutting force at this condition.And the bonding area of tool rake face achieves the maximum with approximately 0.01286mm^(2)at 600m/min.Furthermore,adhesive wear occurrs due to the coupling effect of force and heat on the contact area between the tool and the workpiece material,and crater wear is accompanied under the combined action of abrasive and adhesion wear.

关 键 词：ADC12铝合金 切削速度 铣削力 磨损形式 磨损机理 

分 类 号：TG506.1[金属学及工艺—金属切削加工及机床] TH117.1[机械工程—机械设计及理论]