三相磨粒流抛光及其气泡溃灭分布特性

计时鸣; 葛江勤; 谭大鹏; 曾晰

doi:10.3788/OPE.20182602.0388

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三相磨粒流抛光及其气泡溃灭分布特性

微纳技术与精密机械 | 更新时间：2020-07-05

- 三相磨粒流抛光及其气泡溃灭分布特性
- Three-phase abrasive flow polishing and distribution characteristics of bubble collapse
- 光学精密工程 2018年26卷第2期页码：388-398
- 作者机构：
  
  浙江工业大学特种装备制造与先进加工技术教育部重点实验室, 浙江杭州 310014
- 作者简介：
  
  [ "计时鸣(1957-), 男, 浙江温州人, 博士, 教授, 博士生导师, 1982年于浙江工学院获得学士学位, 1994年于浙江工业大学获得硕士学位, 2000年于浙江大学获得博士学位, 主要从事精密与超精密加工技术、计算机视觉与图像处理、汽车电子工程等方面研究。E-mail: jishiming@zjut.edu.cn" ]
  [ "谭大鹏(1980-), 男, 山东淄博人, 博士, 教授, 博士生导师, 2002年于山东农业大学获得学士学位, 2008年于浙江大学获得博士学位, 主要从事工业检测技术、超精密加工等方面研究。E-mail:tandapeng@zjut.edu.cn" ]
- 基金信息：
  
  国家自然科学基金资助项目(51575494);国家自然科学基金资助项目(51775501);浙江省自然科学基金资助项目(LZ14E050001);浙江省自然科学基金资助项目(LR16E050001);浙江省自然科学基金资助项目(LY18E050023)
- DOI：10.3788/OPE.20182602.0388
  中图分类号： TG580.692.2
- 收稿日期：2017-05-26，
  
  录用日期：2017-7-8，
  
  纸质出版日期：2018-02-25
- 稿件说明：
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计时鸣, 葛江勤, 谭大鹏, 等. 三相磨粒流抛光及其气泡溃灭分布特性[J]. 光学精密工程, 2018,26(2):388-398.

Shi-ming JI, Jiang-qin GE, Da-peng TAN, et al. Three-phase abrasive flow polishing and distribution characteristics of bubble collapse[J]. Optics and precision engineering, 2018, 26(2): 388-398.
计时鸣, 葛江勤, 谭大鹏, 等. 三相磨粒流抛光及其气泡溃灭分布特性[J]. 光学精密工程, 2018,26(2):388-398. DOI： 10.3788/OPE.20182602.0388.

Shi-ming JI, Jiang-qin GE, Da-peng TAN, et al. Three-phase abrasive flow polishing and distribution characteristics of bubble collapse[J]. Optics and precision engineering, 2018, 26(2): 388-398. DOI： 10.3788/OPE.20182602.0388.

摘要

针对软性磨粒流在加工硬脆性材料时效率低下的问题，本文提出一种气-液-固三相磨粒流加工方法。该方法通过在加工流场内注入微尺度气泡群，利用气泡溃灭释放的能量提升磨粒流加工能力。基于计算流体力学和群体平衡模型耦合计算方法，建立气-液-固三相磨粒流流体力学模型，数值模拟结果揭示了工件表面三相磨粒流形成高速湍流涡旋流场加工特性，得到了工件表面气泡溃灭的分布规律，并探明流体黏度与气泡溃灭之间的关系。图像粒子测速实验表明，通入微尺度气泡群后，平均速度从12.50~13.50 m/s提升至15.00~17.00 m/s，最高平均速度可达20.00 m/s以上。对比加工实验显示，经8 h加工后，粗糙度从0.50

m降低到0.05

m。理论和实验研究结果说明借助微尺度气泡群的溃灭效应可有效提升软性磨粒流的加工效率和加工精度。

Abstract

To resolve the low processing efficiency of softness abrasive flow method (SAF) for hard brittle materials

a gas-liquid-solid three-phase abrasive flow processing method (GLSP) was proposed. Through injecting the micro bubbles into processing flow field and by means of the bubble collapse energy

the processing capability of abrasive flow could be strengthened. The fluid mechanics model of GLSP was established based on computational fluid dynamics-population balance model (CFD-PBM) coupled method. The simulation results revealled the dynamic characteristics of the high-speed turbulent vortex flow field formed by the gas-liquid-solid three-phase abrasive flow

and the bubble collapse distribution could be obtained

furthermore

the effect of fluid viscosity on bubble collapse was analyzed. The results of particle image velocimetry show that through injecting micro bubbles

the average velocity could be increased from 12.50-13.50 m/s to 15.00-17.00 m/s

and the maximum value could reach above 20.00 m/s. The comparison processing experiments showed that the roughness increased from 0.09

m to 0.05

m after 8 h processing. The above results indicate that the effect of bubble collapse can effectively improve the processing efficiency and precision of SAF method.

关键词

Keywords

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