基于MQL的微切削Inconel 718残余应力优化研究  

Research on Residual Stress Optimization of Micro-cutting Inconel 718 Based on Minimum Quantity Lubrication

作　　者：吴淑晶[1] 林靖朋 安庆龙[3] 李长河[4] 王大中 Wu Shujing;Lin Jingpeng;An Qinglong;Li Changhe;Wang Dazhong(School of Chemistry and Chemical Engineering,Shanghai University of En-gineering Science,Shanghai 201620,China;School of Air Transportation,Shanghai University of Engineering Science,Shanghai 201620,China;不详)

机构地区：[1]上海工程技术大学化学化工学院,上海市201620 [2]中冶宝钢技术服务有限公司 [3]上海交通大学 [4]青岛理工大学 [5]上海工程技术大学航空运输学院,上海市201620

出　　处：《工具技术》2022年第7期26-33,共8页Tool Engineering

基　　金：国家自然科学基金面上项目(5217052158);上海市科委科技创新行动计划(20030501100)。

摘　　要：镍基高温合金(Inconel 718)因具有良好的机械性能和抗氧化性能而被广泛应用于航空航天等领域。Inconel 718合金存在加工硬化等问题,使其成为一种难加工材料。残余应力是影响Inconel 718合金工件尺寸稳定性的主要因素之一,采用微量润滑(MQL)进行加工,可有效控制切削温度及切削力,降低残余应力。本研究通过MQL微切削理论、仿真及实验等方法,探讨切削速度、进给量、背吃刀量等因素对残余应力变化的影响,揭示MQL微切削Inconel 718合金残余应力分布变化规律,并基于田口法提出MQL微切削Inconel 718合金残余应力的优化方案,具有一定的科学意义和实用价值。Nickel-based superalloy(Inconel 718) has good mechanical properties and oxidation resistance, and is widely used in aerospace and other fields.Inconel 718 alloy has problems such as work hardening, making it a difficult-to-process material.Residual stress is considered to be one of the main factors affecting the dimensional stability of Inconel 718 alloy workpieces.The use of minimal quantity lubrication(MQL) processing can effectively control the cutting temperature and cutting force and reduce the residual stress.This research uses MQL micro-cutting theory, simulation and experiment methods to explore the influence of factors such as cutting speed, feed rate, depth on the change of residual stress, reveals the change law of residual stress distribution of MQL micro-cutting Inconel 718 alloy, and proposes the optimization program of MQL micro-cutting Inconel 718 alloy residual stress by Taguchi method optimization research, which has certain scientific significance and practical value.

关 键 词：Inconel 718 微量润滑(MQL) 残余应力 微切削 有限元法(FEM) 

分 类 号：TG136.4[一般工业技术—材料科学与工程] TH162[金属学及工艺—合金] TP273[金属学及工艺—金属学]