GCr15轴承钢超高速磨削表面粗糙度与烧伤试验分析  

Research of GCr15 Bearing Steel's Surface Roughness and Grinding Burn in Ultra-high Speed Grinding

作　　者：刘晓初[1,2] 陈凡[1,2] 何铨鹏 冯明松 姬武勋 LIU Xiao-chu CHEN Fan HE Quan-peng FENG Mmg-song JI Wu-xun(School of Mechanical and Electrical Engineering Key Laboratory of High-performance Metal Materials Reinforced Grinding Machining, Guangzhou University, Guangzhou 510006, China)

机构地区：[1]广州大学机械与电气工程学院,广州510006 [2]广州大学金属材料强化研磨高性能加工重点实验室,广州510006

出　　处：《组合机床与自动化加工技术》2016年第9期32-34,39,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金资助项目(51275100)

摘　　要：为了探究超高速磨削条件下GCr15轴承钢表面粗糙度与烧伤的关系,进行了不同砂轮速度、工件速度下GCr15轴承钢超高速正交磨削试验,并测量了表面粗糙度,试验结果表明：GCr15轴承钢加工表面都出现了不同程度的烧伤,当砂轮速度为150~160m/s,工件速度为3~5m/min时烧伤最为严重。且在一定范围内,砂轮速度增大、工件速度增大都会造成粗糙度增加。通过烧伤表面三维形貌分析,揭示了烧伤会增加工件表面粗糙度的原理,并分析出了合适的磨削加工参数,为超高速磨削GCr15轴承钢时避免发生磨削表面烧伤提供了参考依据。In order to explore the relationship between surface roughness and burn of GCr15 bearing steel,a ultra high speed grinding orthogonal grinding experiment of GCr15 bearing steel was carried out under different grinding wheel speeds and workpiece speeds,then the surface roughness was measured. The experiment showed that all GCr15 bearing steels were grinding burned with different degrees,especially when the grinding wheel with a speed of 150 ~ 160 m / s and the workpiece with a speed of 3 ~ 5m / min,it was burned the most worst. Besides,the surface roughness would rise along with the speed of grinding wheel and workpiece increased within a certain range. Through analysising the grinding burn of three-dimensional shape,it provided the principle that grinding burn will make the surface roughness increase and analyzed the appropriate grinding processing parameters,which will provide some references for GCr15 bearing steels avoids grinding surface burning when performing ultra-high speed grinding experiment.

关 键 词：GCR15轴承钢 超高速磨削 表面粗糙度 磨削烧伤 

分 类 号：TH142[一般工业技术—材料科学与工程] TG506[机械工程—机械制造及自动化]