WC-Co硬质合金刀具材料与钛合金化学匹配性研究  

Chemical Matching Ability of WC-Co Cemented Carbide Tool Material and Titanium Alloy

作　　者：李安海[1,2] 吴义民 赵军[2] 卢永红 

机构地区：[1]山东滨州渤海活塞股份有限公司,山东滨州256602 [2]山东大学机械工程学院高效洁净机械制造教育部重点实验室,山东济南250061

出　　处：《硬质合金》2015年第4期230-233,共4页Cemented Carbides

基　　金：中国博士后科学基金(2014M551898);山东省博士后创新项目专项资金(201401005);山东大学基本科研业务经费资助项目(2014GN013)

摘　　要：为对硬质合金刀具-钛合金工件材料在切削加工过程中的化学反应情况作出准确判断,采用化学热力学研究了切削过程中化学变化所伴随着的能量变化。本文通过化学热力学原理对WC-Co硬质合金刀具材料与钛合金Ti-6Al-4V的化学匹配性进行了计算,分析判断刀具材料与钛合金材料成分发生化学反应的可能性以及其反应的剧烈程度。研究表明,钛合金化学活性较强,高温下很容易与刀具材料发生反应,且温度越高,反应越剧烈。刀具材料和工件材料化学匹配性研究是切削加工特别是高速切削时刀具材料选择和保护以及刀具磨损机理分析的前提,可为加工钛合金的硬质合金刀具高速切削性能研究提供理论指导和依据。Chemical thermodynamics can be used to study the energy change associated with chemical changes in the system of carbide tool material and titanium alloy workpiece material in cutting process, thus it is good for making accurate judgments to the direction and degree of the chemical reaction. The chemical matching of WC-Co carbide tool material and Ti-6Al-4V titanium alloy were calculated and analyzed by using chemical thermodynamic principles to determine the possibility of chemical reaction and its reaction degree to the components between the tool materials and titanium alloy. The results indicate that the chemical activity between the titanium alloy and tool materials easily occurs at high temperatures due to the strong reaction ability of the titanium alloy. The higher the temperature is, the more violent the reaction is. The chemical matching of tool material and workpiece material is the foundation and premise of the tool material selection and protection in cutting especially in high speed machining as well as the wear mechanism analysis of carbide cutting tools,therefore the theoretical guidance and basis to the research of high speed cutting performance of cemented carbide tools are provide.

关 键 词：硬质合金 刀具材料 工件材料 化学匹配性 

分 类 号：TG711[金属学及工艺—刀具与模具]