摘要
为提高刀具在硬态钻削超高强度钢过程中的切削性能,降低刀具磨损,通过涂层刀具在干式、冷风、液氮三种清洁切削介质下钻削42CrMo超高强度钢,研究涂层刀具切削性能和刀具磨损机理,探究清洁硬态钻削时延长刀具寿命的可行性。研究表明:冷风与液氮冷却均可提高断屑、排屑能力,降低钻削力和钻削温度,延长刀具寿命;涂层刀具主要磨损机理为黏结磨损、磨粒磨损和氧化磨损。该研究可为高强度、高硬度材料的清洁钻削加工提供理论和技术参考。
In order to improve the cutting performance and reduce tool wear in the process of drilling ultra-high strength steel in hard state,42CrMo ultra-high strength steel is drilled with coated tools in dry,cold air and liquid nitrogen,and the cutting performance and tool wear mechanism of coated tools are studied to explore the feasibility of extending tool life under clean hard state drilling.The research shows that both cold air and liquid nitrogen cooling can improve chip breaking and chip removal ability,reduce drilling force and drilling temperature,and prolong tool life.The main wear mechanisms of coated tools are adhesice wear,abrasive wear and oxidation wear.This research can provide theoretical and technical guidance for the clean drilling of high-strength and high-hardness materials.
作者
李士武
郑光明
李玉龙
刘涛
杜洪刚
Li Shiwu;Zheng Guangming;Li Yulong;Liu Tao;Du Honggang(School of Mechanical Engineering,Shandong University of Technology,Zibo,Shandong 255000,China;不详)
出处
《工具技术》
北大核心
2024年第7期61-65,共5页
Tool Engineering
基金
山东省科技型中小企业创新能力提升工程(2021TSGC1433)
山东省自然科学基金(ZR2020ME156)。
