118. Study on the polishing of curved pipe parts by solid liquid two phase abrasive flow
Junye Li1, Ningning Su2, Zhao Weihong3, Yanlu Yi4, Jinglei Hu5
College of Mechanical and Electric
Engineering, Changchun University of Science and Technology,
E-mail: firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org
Abstract. In order to study the effect of abrasive flow on the polishing quality of the elbow parts, 90° elbow is used as the research object. The dynamic pressure and wall shear force of different incident angle flow is numerically simulated by setting the process parameters of elbow polishing, which shows that the properly increase entrance angle can improve the uniformity and reliability of abrasive flow polishing, and then, the numerical simulation analysis of turbulence viscosity and wall shear force for different incident pressures are also simulated. It indicates that the properly enhance inlet pressure is helpful to improve the polishing effect and polishing uniformity. Finally, the abrasive grain polishing test is carried out. After the measurement by Mahr stylus measuring instrument, the surface roughness decreases from 1.968 μm to 0.212 μm, which confirm the effectiveness of abrasive flow processing. The roughness value of the inside at the bend after the polishing of the abrasive grain is 0.274 μm by the measurement of the NT1100 Grating Surface Roughness Meter under the pressure condition of 7 MPa. By comparing the polishing effect of the pipe at different pressure and inflow angle, it is found that increase the pressure and inlet angle can improve the polishing effect of the abrasive flow on the curved pipe, but at the same time the uniformity of the polishing is decreased, in other words, the roughness gap at different positions of the elbow will increase. Therefore, it is exceedingly necessary to make some adjustments when in the actual operation.
Keywords: solid-liquid abrasive flow, incident angle, elbow polishing, surface quality.
 Han Bing, Liu Lixin, Chen Yan Optimization of process parameters on magnetic abrasive finishing to inner surface of bending pipe. China Mechanical Engineering, Vol. 6, 2015, p. 814‑817.
 Li Xin Bent-Pipe on the Inner Surface Polishing Technology Research. Changchun University of Science and Technology, 2009.
 Zhang Lingyun, Wu Fenglin Present Situation and Prospect of Abrasive Flow Machining. Mechanical Engineering and Automation, Vol. 17, Issue 5, 2006, p. 166‑168.
 Ji Shiming, Huang Xihuan, Tan Dapeng, et al. Gas-liquid-solid abrasive flow polishing and its process parameter optimization. Optics and Precision Engineering, 2016,24(4):855-864.
 Li Junye, Qiao Zemin, Yang Zhaojun, et al. Influence of abrasive concentration on the processing quality of abrasive flow in mesoscopic scale. Journal of Jilin University (Engineering and Technology Edition), Vol. 47, Issue 3, 2017, p. 837‑843.
 Ding Jinfu, Liu Runzhi, Zhang Kehua Micro cutting mechanism of abrasive flow precision machining. Optics and Precision Engineering, Vol. 22, Issue 12, 2014, p. 3324‑3331.
 Venkatesh G., Sharma A. K., Kumar P. On ultrasonic assisted abrasive flow finishing of bevel gears. International Journal of Machine Tools and Manufacture, Vol. 89, 2015, p. 29‑38.
 Dong Jiaguang, Zhang Bin, Yi Guohua, et al. Analysis of material removal and surface roughness in abrasive flow machining process. Design and Manufacture of Diesel Engine, Vol. 22, Issue 1, 2016, p. 45‑56.
 Li Junye, Sun Fengyu, Wu Shaoju, et al. An analysis of velocity-temperature characteristics of liquid-solid two-phase abrasive flow machining of non-linear tubes. 5th International Conference on Applied Mechanics and Mechanical Engineering (ICAMME), Vol. 6, 2015, p. 36‑39.
 Li Junye, Hu Jinglei, Zhang Xinming, et al. The design and analysis on fixture for polishing internal gear tooth surface by solid-liquid two phase flow. Manufacturing Automation, Vol. 38, Issue 11, 2016, p. 66‑74.
 Ji Shiming, Tang Bo, Tan Dapeng, et al. Structured surface softness abrasive flow precision finish machining and its abrasive flow dynamic numerical analysis. Journal of Mechanical Engineering, Vol. 46, Issue 15, 2010, p. 178‑184.
 Pan Yan The Technologic Research of Mould Structure Surface Polishing Processing Based on Flexible Liquid-Solid Two Phase. College of Mechanical Engineering Zhejiang University of Technology, 2009.
 Tan Yuanqiang, Li Yi On the model and pressure simulation of solid-fluid two phase flow for abrasive flow machining. China Mechanical Engineering, Vol. 19, Issue 4, 2008, p. 439‑497.
 Zhao Lvshun, Tu Danhua, Ye Jian et al. Initial study of a theoretical near-wall turbulence model. Journal of Aerospace Power, Vol. 20, Issue 2, 2005, p. 177‑181.
 Shen Ming, Dai Yong, Chu Cong, et al. Soft abrasive flow machining simulation and experiment of the large curvature bend based on RNG k-s model. Hydraulics Pneumatics and Seals, Vol. 5, 2016, p. 39‑44.
 Gao Hang, Fu Youzhi, Wang Xuanping, et al. Simulations and experiments on finishing process of screw surface by using abrasive flow machining. Journal of Zhejiang University (Engineering Science), Vol. 50, Issue 5, 2016, p. 920‑926.
Cite this article
Li Junye, Su Ningning, Weihong Zhao, Yi Yanlu, Hu Jinglei Study on the polishing of curved pipe parts by solid liquid two phase abrasive flow. Journal of Measurements in Engineering, Vol. 5, Issue 2, 2017, p. 59‑67.
Journal of Measurements in Engineering. June 2017, Volume 5, Issue 2
© JVE International Ltd. ISSN Print 2335-2124, ISSN Online 2424-4635, Kaunas, Lithuania