摘要
颗粒增强钛基复合材料(PTMCs)是具有高强度、高硬度和良好耐热性的新型金属基复合材料,在航空航天领域具有广阔应用前景。针对PTMCs材料极易发生的磨削烧伤问题,开展PTMCs材料的缓进深切磨削研究,对磨削过程中磨削温度和工件表面形貌的变化规律进行了分析。利用有限元温度仿真的方法,研究缓进深切磨削PTMCs传入工件的热量比例。结果显示:缓进深切磨削PTMCs过程中,磨削深度大于0.6mm时容易发生烧伤;当工件材料表面发生严重烧伤时会产生裂纹;随着磨削深度增大,加工表面形貌逐渐变差。
Particle-reinforced titanium matrix composites （PTMCs） have high specific strength, high hardness and high temperature durability, which shows great application potentials as an important structural material in aviation and aerospace industries. Creep-feed deep grinding experiments are carried out on particle-reinforced titanium matrix composite to study the grinding performance in terms of grinding temperature and surface. The heat distribution proportion in the workpiece is discussed using finite element method. The results show that grinding burn is likely to occur when the depth of Moreover, the surface topography becomes worse with increasing
出处
《金刚石与磨料磨具工程》
CAS
2016年第4期44-48,共5页
Diamond & Abrasives Engineering
基金
江苏省科技支撑计划(工业)项目(No.BE2013109)
江苏省产学研前瞻性联合研究项目(No.BY2014003–08)
江苏省普通高校专业学位研究生创新计划项目(No.016001)
南京航空航天大学研究生创新基地(实验室)开放基金(No.ykfjj20150508)
关键词
缓进深切磨削
颗粒增强钛基复合材料
磨削温度
表面形貌
creep-feed deep grinding temperature
surface topography presented by a severe grinding burn depth of cutting. particle-reinforced titanium matrix composites
grinding
