A novel magnetic field-assisted mass polishing of freeform surfaces

Wang, Chunjin; Cheung, Chi Fai; Ho, Lai Ting; Yung, Kai Leung

doi:10.1016/j.jmatprotec.2019.116552

Cited by 51 publications

(13 citation statements)

References 25 publications

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“…Rheological polishing technology has natural advantages for polishing processing of ultra-complex precision surfaces (Wang et al, 2022a). Magnetic abrasive polishing MAP is similar to MRP, except that the liquid environment is removed based on MRP so that magnetic particles are formed directly under magnetic force to polish the machined surface with magnetic brushes (Wang et al, 2020). In addition, there is magnetorheological jet finishing (MRJF) technology that uses magnetic field stabilized jet.…”

Section: Compared With Other Polishing Techniquesmentioning

confidence: 99%

Progress in the study of electrorheological polishing: A review

Sun

Zhao

Yin

2023

Journal of Intelligent Material Systems and Structures

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Electrorheological polishing (ERP) is an important field-assisted polishing method, which can reduce abrasive loss and improve machining efficiency by using the electric field-induced electrorheological (ER) effect to help the abrasive to overcome the centrifugal force caused by high rotating speed during polishing. ERP has many advantages, including high efficiency, high precision, facile polishing for a small object, and a good application prospect in polishing optical devices and hard molds. This review describes the research progress in ERP in the past two decades. The mechanism of electrorheological polishing is analyzed from two aspects of electrorheological effect and dielectrophoresis. According to the time sequence of electrorheological polishing development, two kinds of ERP materials including the simple mixing system and composite particle system are introduced. ERP electrodes including off-axis bipolar electrode, needle-ring electrode, needle-like single electrode, one-sided patterned electrode, and one-sided simple composite electrode are described. From the two characterization quantities of removal rate and surface quality, the industrial factors affecting the ERP effect are discussed. The advantages and disadvantages of ERP and other polishing processes are compared. Finally, the remaining challenges and possible development trends in ERP technology for the future outlook are proposed.

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Section: Compared With Other Polishing Techniquesmentioning

confidence: 99%

Progress in the study of electrorheological polishing: A review

Sun

Zhao

Yin

2023

Journal of Intelligent Material Systems and Structures

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“…Magnetic abrasive finishing (MAF), a process that employs the magnetic attraction of a composite powder containing hard abrasives and ferromagnetic metals to polish the surface of the workpiece, is adaptive and highly efficient [ 15 , 16 ]. MAF can not only finish flat surfaces [ 17 , 18 ], internal and external cylindrical surfaces [ 19 , 20 , 21 ], and curved surfaces [ 22 , 23 ], but also deburr a machined surface [ 24 , 25 ]. Currently, MAF has been extensively studied in highly sophisticated industries such as healthcare, communication technology, aerospace, and the military [ 26 , 27 , 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Spherical Al2O3 Magnetic Abrasive Prepared by Novel Method for Finishing of the Inner Surface of Cobalt–Chromium Alloy Cardiovascular Stents Tube

Liu

Zhao

et al. 2023

Micromachines

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In this investigation, spherical Al2O3 magnetic abrasive particles (MAPs) were used to polish the inner surface of ultra-fine long cobalt–chromium alloy cardiovascular stent tubes. The magnetic abrasives were prepared by combining plasma molten metal powder and hard abrasives, and the magnetic abrasives prepared by this new method are characterized by high sphericity, narrow particle size distribution range, long life, and good economic value. Firstly, the spherical Al2O3 magnetic abrasives were prepared by the new method; secondly, the polishing machine for the inner surface of the ultra-fine long cardiovascular stent tubes was developed; finally, the influence laws of spindle speed, magnetic pole speed, MAP filling quantities, the magnetic pole gap on the surface roughness (Ra), and the removal thickness (RT) of tubes were investigated. The results showed that the prepared Al2O3 magnetic abrasives were spherical in shape, and their superficial layer was tightly bound with Al2O3 hard abrasives with sharp cutting; the use of spherical Al2O3 magnetic abrasives could achieve the polishing of the inner surface of ultra-fine cobalt–chromium alloy cardiovascular bracket tubes, and after processing, the inner surface roughness (Ra) of the tubes decreased from 0.337 µm to 0.09 µm and had an RT of 5.106 µm.

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“…The surface morphology, roughness and profile were quantitatively evaluated before and after polishing for comparison. To improve the efficiency and surface quality of free-form surface polishing, Wang et al [21] developed the magnetic field-assisted mass polishing (MAMP) system with four sets of symmetrical permanent magnetic poles. The optimal surface roughness (Sa) of 13.8 nm was achieved from initial 455.4 nm for 304 stainless steel workpiece.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the magnetorheological shear thickening finishing with radial slotted magnetic pole for Sine surface

Sun¹,

Fan²,

Tian

et al. 2022

Preprint

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Free-form surfaces have widespread applications in the fields of integrated circuit, and automobile sectors because of the typical geometric characteristics. Surface finishing of free-form surfaces is a critical process to fulfill target quality. In present study, a magnetorheological shear thickening finishing (MSTF) method is proposed for Sine surface finishing based on the designed finishing tool and the developed MSTF media. The MSTF utilizes a flexible finishing tool, integrating a slotted cylindrical permanent magnetic pole with radial magnetization, is fabricated to dominate rheological properties of finishing media to guarantee the finishing force. To obtain sufficiently large magnetic flux density and magnetic field gradients in the finishing zone, finite element analysis (FEA) is used to obtain the optimal dimensions and structure of the finishing tool. The principle of the method is illustrated and mathematical model of material removal is established. Finishing experiments were conducted on Sine surface fabricated by SUS304 based on the developed MSTF media and the established platform. The effects of finishing parameters on surface roughness are evaluated quantitatively. The results substantiate that the material was uniformly re-moved over the entire Sine surface and the developed method is capable for Si-ne finishing with a more than 87% improvement in surface roughness. The method in the paper shows signs of future success in finishing free-form surfaces in a wide range of industrial applications.

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A novel magnetic field-assisted mass polishing of freeform surfaces

Cited by 51 publications

References 25 publications

Progress in the study of electrorheological polishing: A review

Progress in the study of electrorheological polishing: A review

Investigation of Spherical Al2O3 Magnetic Abrasive Prepared by Novel Method for Finishing of the Inner Surface of Cobalt–Chromium Alloy Cardiovascular Stents Tube

Investigation on the magnetorheological shear thickening finishing with radial slotted magnetic pole for Sine surface

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