约束磨料流体抛光材料去除模型研究
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摘要
为了研究约束磨料流体抛光的材料去除模型,使用Matlab软件对加工区流场进行压力和速度仿真。压力场仿真结果表明,最大压力峰值出现在限控轮与工件的最小间隙区域,并且该区域的压力梯度变化很大;速度场仿真表明,流体速度在x轴方向上占主导地位,在y轴方向上出现了侧泄,在z轴方向上速度很小。建立了冲击侵蚀去除模型,结合Finnie塑性剪切磨损去除模型建立了约束磨料流体抛光材料去除模型,模型表明,冲击角度为45°时材料去除量最高。对K9玻璃进行的约束磨料流体抛光实验表明,建立的材料去除模型与实验结果基本吻合。
In order to study the material removal model of constraint abrasive fluid polishing,the flow field of processing region is simulated with MATLAB,obtaining pressure and velocity of flow field. The result of simulation in pressure field shows that maximum pressure appears in the region of the minimum gap,and pressure gradient changes obviously. The simulation of velocity field suggests that the velocity in the x direction is in dominant,the side-leakage in the y direction exists and the velocityin the z direction is small. The removal model of constraint abrasive fluid polishing is established with impact erosion model and Finnie plastic shear model. The model suggests that material removal is high at impact angle of 45°.Constraint abrasive fluid polishing experiment is conducted to polish the K9 glass samples. The result shows that theoretic material removal model is consistent with the experiment.
In order to study the material removal model of constraint abrasive fluid polishing,the flow field of processing region is simulated with MATLAB,obtaining pressure and velocity of flow field. The result of simulation in pressure field shows that maximum pressure appears in the region of the minimum gap,and pressure gradient changes obviously. The simulation of velocity field suggests that the velocity in the x direction is in dominant,the side-leakage in the y direction exists and the velocityin the z direction is small. The removal model of constraint abrasive fluid polishing is established with impact erosion model and Finnie plastic shear model. The model suggests that material removal is high at impact angle of 45°.Constraint abrasive fluid polishing experiment is conducted to polish the K9 glass samples. The result shows that theoretic material removal model is consistent with the experiment.
引文
[1]刘振通,闫如忠,陈冰冰.约束磨料流体抛光特性的仿真及实验研究[J].润滑与密封,2014(11):73-77.(Liu Zhen-tong,Yan Ru-zhong,Chen Bing-bing.Simulation and experiment study on polishing characteristics of constraint abrasive fluid[J].Lubrication Engineering,2014(11):73-77.)
[2] J.Wang.Particle velocity models for ultra-high pressure abrasive waterjets[J].Journal ofMaterials Processing Technology,2009,209(9):4573-4577.
[3]Cao Zhong-chen,Chi Fai Cheung.Theoretical modelling and analysis of the material removal characteristics in fluid jet polishing[J].International Journal of Mechanical Sciences,2014(89):158-166.
[4]张成光,张勇,张飞虎.磨料水射流加工去除模型研究[J].机械工程学报,2015(7):188-196.(Zhang Cheng-guang,Zhang Yong,Zhang Fei-hu.Study on removal model of abrasive waterjet machining[J].Journal of Mechanical Engineering,2015(7):188-196.)
[5]李长河,蔡光起,原所先.砂轮约束磨粒喷射精密光整加工材料去除模型[J].农业机械学报,2005,36(11):132-135.(Li Chang-he,Cai Guang-qi,Yuan Suo-xian.Material removal model for abrasive jet precision finishing restricted by abrasive wheel[J].Transactions of the Chinese Society for Agricultural Machinery,2005,36(11):132-135.)
[6]江征风,郑钧宜.基于Reynolds方程的磨削流体动压特性的研究[J].润滑与密封,2007,32(10):43-45.(Jiang Zheng-feng,Zheng Jun-yi.Hydrodynamic pressure study of grinding fluid based on Reynolds equation[J].Lubrication Engineering,2007,32(10):43-45.)
[7]Jeong-Du Kim,Motion analysis of powder particles in EEM using cylindrical polyurethane wheel[J].International Journal of Machine Tools&Manufacture,2002,42(1):21-28.
[8]Bull S J.Using work of indentation to predict erosion behavior in bulk materials and coatings[J].Journal of Physics D Applied Physics,2006,39(8):1626-1634.
[9]Huang C,Chiovelli S,Minev P.A comprehensive phenomenological model for erosion of materials in jet flow[J].Powder Technology,2008,187(3):273-279.
[10]Chang Y P,Hanshimura M,Do rnfeld D A.An investigation of material removal mechanisms in lapping with grain size transition[J].Journal of Manufacturing Science and Engineering,2000,122(6):413-419.
[2] J.Wang.Particle velocity models for ultra-high pressure abrasive waterjets[J].Journal ofMaterials Processing Technology,2009,209(9):4573-4577.
[3]Cao Zhong-chen,Chi Fai Cheung.Theoretical modelling and analysis of the material removal characteristics in fluid jet polishing[J].International Journal of Mechanical Sciences,2014(89):158-166.
[4]张成光,张勇,张飞虎.磨料水射流加工去除模型研究[J].机械工程学报,2015(7):188-196.(Zhang Cheng-guang,Zhang Yong,Zhang Fei-hu.Study on removal model of abrasive waterjet machining[J].Journal of Mechanical Engineering,2015(7):188-196.)
[5]李长河,蔡光起,原所先.砂轮约束磨粒喷射精密光整加工材料去除模型[J].农业机械学报,2005,36(11):132-135.(Li Chang-he,Cai Guang-qi,Yuan Suo-xian.Material removal model for abrasive jet precision finishing restricted by abrasive wheel[J].Transactions of the Chinese Society for Agricultural Machinery,2005,36(11):132-135.)
[6]江征风,郑钧宜.基于Reynolds方程的磨削流体动压特性的研究[J].润滑与密封,2007,32(10):43-45.(Jiang Zheng-feng,Zheng Jun-yi.Hydrodynamic pressure study of grinding fluid based on Reynolds equation[J].Lubrication Engineering,2007,32(10):43-45.)
[7]Jeong-Du Kim,Motion analysis of powder particles in EEM using cylindrical polyurethane wheel[J].International Journal of Machine Tools&Manufacture,2002,42(1):21-28.
[8]Bull S J.Using work of indentation to predict erosion behavior in bulk materials and coatings[J].Journal of Physics D Applied Physics,2006,39(8):1626-1634.
[9]Huang C,Chiovelli S,Minev P.A comprehensive phenomenological model for erosion of materials in jet flow[J].Powder Technology,2008,187(3):273-279.
[10]Chang Y P,Hanshimura M,Do rnfeld D A.An investigation of material removal mechanisms in lapping with grain size transition[J].Journal of Manufacturing Science and Engineering,2000,122(6):413-419.