Study of Internal Magnetic Field Assisted Finishing for Copper Tubes with MRF (Magneto-Rheological Fluid)-Based Slurry

Satō, Takashi; Yamaguchi, Hitomi; Shinmura, Takeo; Okazaki, Takahiko

doi:10.4028/www.scientific.net/kem.329.249

Cited by 11 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In turn, the finished surface is an accumulation of short, intermittent cutting marks. In the internal finishing of nonmagnetic tubes, a similar trend has been observed when using slurry with iron particles several micrometers in diameter [30]. When the magnetic force is even weaker, the magnetic particles are spun off and no finishing occurs.…”

Section: Introductionsupporting

confidence: 62%

“…Although the focuses of these previous studies were on the submicron to MAF has been used to finish freeform surfaces and other complex geometries because of its characteristics including flexible magnetic particle chains that form along the lines of magnetic force and conform to the workpiece surface [25][26][27]. The material removal mechanism of MAF is attributed to microcutting of the surface, and the motion of the magnetic particle tools results in characteristic surface textures [28][29][30]. Accordingly, this study proposes the application of MAF to finish cobalt chromium (CoCr) alloy components and modify their surface texture.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Control of Lay on Cobalt Chromium Alloy Finished Surfaces Using Magnetic Abrasive Finishing and Its Effect on Wettability

Graziano

Ganguly

Schmitz

et al. 2014

Journal of Manufacturing Science and Engineering

View full text Add to dashboard Cite

Freeform suifaces, including the femoral components of knee prosthetics, present a significant challenge in manufacturing. The finishing process is often performed manually, which leads to surface finish variations. In the case of knee prosthetics, this can be a factor leading to accelerated wear of the polyethylene tibial component. The wear resistance of polyethylene components might be influenced by not only the roughness but also the lay of femoral component surfaces. This study applies magnetic abrasive finishing (MAF) for nanometer-scale finishing of cobalt chromium alloys, which are commonly used in knee prosthetics and other freeform components. Using fiat disks as workpieces, this paper shows the dominant parameters for controlling the lay in MAF and demonstrates the feasibility of MAF to alter the lay white controlling the surface roughness. The manually finished disk surfaces (with roughness around 3 nm S^j, consisting of random cutting marks, were compared to MAF-produced surfaces (also with roughness around 3 nm S J with different lays. Tests using deionized water droplets show that the lay infiuences the wetting properties even if the surface roughness changes by no more than a nanometer. Surfaces with unidirectional cutting marks exhibit the least wettability, and increasing the cross-hatch angle in the MAF-produced surfaces increases the wettability. Surfaces consisting of short, intermittent cutting marks were the most wettable by deionized water.

show abstract

Section: Introductionsupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Control of Lay on Cobalt Chromium Alloy Finished Surfaces Using Magnetic Abrasive Finishing and Its Effect on Wettability

Graziano

Ganguly

Schmitz

et al. 2014

Journal of Manufacturing Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Sato et al . [ 74 ] developed a magnetic field-assisted internal finishing technique for copper tubes using MR fluid-based slurry mixed with diamond abrasives. The copper tube held in a chuck is rotated by a motor and is simultaneously vibrated in the axial direction with a crank mechanism.…”

Section: Mraff and Rotational-mraffmentioning

confidence: 99%

Nano-finishing techniques: a review

Jain

Sidpara

Sankar

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

The quality of surface is one of the significant parameters which affects the life and functionality of any product. Many products require nano-level surface finish as their functional indispensability. Those processes having flexible finishing tool can be employed for such type of components. These finishing processes can be classified into two categories: with and without magnetic field assistance. The former includes magnetic abrasive finishing, magnetorheological finishing, and allied processes, and the latter includes abrasive flow finishing. This article reports the critical review of mainly three processes: abrasive flow finishing, magnetorheological finishing, and magnetorheological abrasive flow finishing. In this article, the issues that need attention of the researchers have been categorically mentioned. This article provides a comprehensive literature review of magnetorheological finishing process in terms of rheological characterization of magnetorheological fluid, experimental investigation, theoretical analysis, and applications. This article deals with various advancements in abrasive flow finishing and hybrid processes. The developments in magnetorheological abrasive flow finishing and its allied processes have been discussed in detail. By suitable modification of magnetorheological abrasive flow finishing process, it can achieve surface finish up to nano-meter on different materials such as brass, aluminium, stainless steel, and silicon-nitride.

show abstract

“…MAF has been used in various applications, including surface finishing of complex geometries [17][18][19] and difficult-to-machine materials 20,21 . The extensive variability of finishing parameters in MAF is an advantage when altering abrasive contacts against the target surface, resulting in surfaces consisting of various cut-mark patterns-from strongly directional surfaces to isotropic surfaces 22,23 . One MAF process can produce periodic unidirectional grooves, thereby causing iridescent colors to appear due to the diffraction of light 24 , while another MAF process can produce surfaces that consist of isotropic indentations 25 , which lead to optical scattering.…”

Section: Introductionmentioning

confidence: 99%

Coloration of stainless-steel surfaces using magnetic abrasive finishing

Yamaguchi

Lakhtakia³

et al. 2023

Surface Engineering and Forensics

View full text Add to dashboard Cite

Rapid advancement of materials and material-processing technologies has enabled fabrication of complex geometries on difficult-to-machine materials, and abrasive-finishing technology must in turn respond to those significant changes. An example of an advanced abrasive-finishing technique is the magnetic abrasive finishing (MAF) process. A magnetic abrasive comprises ferrous particles linked together along magnetic lines of force, when subjected to a magnetic field. These ferrous-particle chains offer configurational flexibility desired for the finishing process. Moreover, it is possible to influence the motion of a ferrous particle-even if the particle is not in direct contact with a magnet-by controlling the magnetic field. This impactful behavior of ferrous particles enables the application of the finishing operation not only to easily accessible surfaces but also to areas that are hard to reach by conventional mechanical techniques, such as freeform components and the interiors of flexible tubes. The obtained surface roughness ranges from the sub-nanometer to micrometer scales and alters light reflectivity, wettability by liquids, friction response, etc. Recent studies found that MAF leads to coloration of stainless-steel surfaces under certain finishing conditions through the formation of oxide layers. This presentation describes the fundamentals of MAF including some representative applications, the relationship between tool motion and the corresponding finished-surface structures, and characteristics of the observed coloration.

show abstract

Study of Internal Magnetic Field Assisted Finishing for Copper Tubes with MRF (Magneto-Rheological Fluid)-Based Slurry

Cited by 11 publications

References 7 publications

Control of Lay on Cobalt Chromium Alloy Finished Surfaces Using Magnetic Abrasive Finishing and Its Effect on Wettability

Control of Lay on Cobalt Chromium Alloy Finished Surfaces Using Magnetic Abrasive Finishing and Its Effect on Wettability

Nano-finishing techniques: a review

Coloration of stainless-steel surfaces using magnetic abrasive finishing

Contact Info

Product

Resources

About