In this study, a novel magnetorheological (MR) polishing device under a compound magnetic field is designed to achieve microlevel polishing of the titanium tubes. The polishing process is realized by combining the rotation motion of the tube and the reciprocating linear motion of the polishing head. Two types of excitation equipment for generating an appropriate compound magnetic field are outlined. A series of experiments are conducted to systematically investigate the effect of compound magnetic field strength, rotation speed, and type and concentration of abrasive particles on the polishing performance delivered by the designed device. The experiments were carried out through controlling variables. Before and after the experiment, the surface roughness in the polished area of the workpiece is measured, and the influence of the independent variable on the polishing effect is judged by a changing rule of surface roughness so as to obtain a better parameter about compound magnetic field strength, concentration of abrasive particles, etc. It is shown from experimental results that diamond abrasive particles are appropriate for fine finishing the internal surface of the titanium-alloy tube. It is also identified that the polishing performance is excellent at high magnetic field strength, fast rotation speed, and high abrasive-particle concentration.

中文翻译：

---

磁流变抛光技术对钛管进行环形表面微加工

在这项研究中，设计了一种在复合磁场下的新型磁流变（MR）抛光装置，以实现钛管的微级抛光。抛光过程是通过将管子的旋转运动和抛光头的往复直线运动相结合来实现的。概述了用于产生适当的复合磁场的两种类型的励磁设备。进行了一系列实验，系统地研究了复合磁场强度，旋转速度以及磨料颗粒的类型和浓度对所设计设备提供的抛光性能的影响。通过控制变量进行实验。实验前后，测量工件抛光区域的表面粗糙度，通过表面粗糙度的变化规律来判断自变量对抛光效果的影响，从而获得关于复合磁场强度，磨粒浓度等的较好参数。实验结果表明，金刚石磨粒适用于精加工钛合金管的内表面。还可以看出，在高磁场强度，快速旋转速度和高磨料颗粒浓度下，抛光性能优异。从实验结果表明，金刚石磨料颗粒适合于精细加工钛合金管的内表面。还可以看出，在高磁场强度，快速旋转速度和高磨料颗粒浓度下，抛光性能优异。从实验结果表明，金刚石磨料颗粒适合于精细加工钛合金管的内表面。还可以看出，在高磁场强度，快速旋转速度和高磨料颗粒浓度下，抛光性能优异。