Tribological Performance of Artificial CoCrMo Prosthesis by ELID Grinding Process

2021 ◽  
Vol 217 (1) ◽  
pp. 225-232
Author(s):  
Huali Zhang ◽  
Jicai Kuai ◽  
Dmitrii V. Ardashev ◽  
Xin Li ◽  
Shian Liu
Keyword(s):  
Tribological Performance ◽  
Grinding Process ◽  
Elid Grinding

Surface Behaviors of ELID Ground Engineering Ceramics

2007 ◽  
Vol 336-338 ◽  
pp. 1469-1472 ◽  
Author(s):  
Jian Yun Shen ◽  
Wei Min Lin ◽  
Hitoshi Ohmori ◽  
Xi Peng Xu
Keyword(s):  
Mechanical Properties ◽  
Material Properties ◽  
Material Removal ◽  
Grinding Process ◽  
Removal Mechanism ◽  
Material Removal Mechanism ◽  
Silicon Nitride Ceramic ◽  
Engineering Ceramics ◽  
Elid Grinding ◽  
Engineering Ceramic

In this study, grinding of Si3N4, SiC, and Al2O3 ceramics under the condition of electrolytic in-process dressing (ELID) system was investigated. The surface appearances of these engineering ceramics during the ELID grinding process were attentively observed to describe the formation of finely finished surfaces. Based on the analysis of material properties and detailed micro-observation of ground surfaces, it can be concluded that the material removal mechanism of engineering ceramic is closely related to its mechanical properties. The silicon nitride ceramic was most easily machined to precision surface among these three engineering ceramics.

Development on Micro Precision Truing Method of ELID-Grinding Wheel (2nd Report: Application to Edge Sharpening of Large Wheel)

2005 ◽  
Vol 291-292 ◽  
pp. 213-220 ◽  
Author(s):  
Shao Hui Yin ◽  
Wei Min Lin ◽  
Yoshihiro Uehara ◽  
Shinya MORITA ◽  
Hitoshi Ohmori ◽  
...  
Keyword(s):  
Surface Quality ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Grinding Wheels ◽  
Elid Grinding ◽  
Diamond Grinding ◽  
Grinding Performance ◽  
Profile Accuracy ◽  
Large Wheel ◽  
Edge Sharpening

In V-groove ELID grinding process, to achieve optimal grinding performance and satisfactory surface quality and profile accuracy, metal bonded diamond grinding wheels need to be carefully sharpened. In this paper, we applied the proposed new micro-truing method consisting of electro-discharge truing and electrolysis-assisted mechanical truing to sharpen the edge of large grinding wheels. The minimum wheel tip radiuses of 6.3 and 8.5µm were achieved for the #4000 and #20000 grinding wheels. The truing mechanisms and sharpening performance are also discussed.

1406 Ultra-precision Aspherical fabrication with ELID Grinding process for Gradient Index (GRIN) Lens

2006 ◽  
Vol 2006.4 (0) ◽  
pp. 29-30
Author(s):  
Yutaka WATANABE ◽  
Hitoshi OHMORI ◽  
Weimin LIN ◽  
Yoshihiro UEHARA ◽  
Shin-ya MORITA ◽  
...  
Keyword(s):  
Grinding Process ◽  
Gradient Index ◽  
Elid Grinding ◽  
Grin Lens ◽  
Ultra Precision

Study on Material Removal Mechanism of Silicon Nitride during ELID Ultraprecision Grinding

2011 ◽  
Vol 314-316 ◽  
pp. 1740-1745
Author(s):  
Wei Dong Jin
Keyword(s):  
Silicon Nitride ◽  
Material Removal ◽  
Dynamic Balance ◽  
Grinding Process ◽  
Silicon Nitride Ceramic ◽  
Elid Grinding ◽  
Hard And Brittle Materials ◽  
Plastic Shearing ◽  
Material Removal Mode ◽  
Passivating Films

Based on the analyzing ultraprecision grinding process of hard and brittle materials, taking ELID grinding of silicon nitride ceramic as an example, active control technology of passivating films state was introduced in this paper. ELID ultraprecision grinding process respectively at adaptive dynamic balance mode, discontinuous electrolyzing mode and discontinuous grinding mode had been comparatively studied. By means of AFM used for analyzing surface topography of parts, studies show that material removal method for ELID grinding is always a combination of micro brittle fracture, plastic shearing, lapping and polishing action, and which is the main material removal mode depends on the actual grinding contact state. Finally, finishing surface generating mechanism for silicon nitride in ELID ultraprecision grinding was summed up.

Efficient Super-Smooth Finishing Characteristics of SiC Materials through the Use of Fine-Grinding

2009 ◽  
Vol 404 ◽  
pp. 137-141 ◽  
Author(s):  
H. Kasuga ◽  
Hitoshi Ohmori ◽  
Wei Min Lin ◽  
Y. Watanabe ◽  
T. Mishima ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Surface Analysis ◽  
Grinding Process ◽  
Structural Components ◽  
X Ray ◽  
Fine Grinding ◽  
Elid Grinding ◽  
Grinding Method ◽  
Wide Range ◽  
Experimental Parameters

Silicon carbide (SiC) materials have increasingly been needed in the wide range of industries, such as for structural components, automobile parts, space telescope, X-ray mirror, and next-generation semiconductors. However, SiC materials have difficulties in super-smooth finishing because of their hard and brittle characteristics. The authors have been investigating appropriate conditions on their finishing by fine-grinding with the unique grinding process called ELID (Electrolytic In-process Dressing) grinding method. The ELID grinding method has a stable grinding ability, so very detailed characteristics of their material-remove mechanisms were to be investigated. Surface analysis of each material has been discussed through the ELID, and this study proposes good finishing conditions for SiC. In this paper, the advantages of the applied fine-grinding are shown, and unique features on grinding characteristics of SiC through various grinding experimental parameters are described.

Investigation on Influences by Adapting Additives to Electrolytic In-Process Dressing (ELID) Grinding

2010 ◽  
Vol 447-448 ◽  
pp. 169-173
Author(s):  
Ning Lou ◽  
Ioan D. Marinescu ◽  
Michael C. Weismiller
Keyword(s):  
Manufacturing Industry ◽  
Grinding Process ◽  
Mirror Surface ◽  
Chemical Additives ◽  
Efficient Technology ◽  
Metallic Oxide ◽  
High Quality ◽  
Elid Grinding ◽  
Before And After ◽  
Hard And Brittle Materials

As demand for high-quality machined tools considerably grows, ELID, a new and efficient technology, has been successfully brought into the precise manufacturing industry of hard and brittle materials with mirror surface finish. Hence, besides conventional functions like lubrication, fluid solutions in this grinding process are required to serve more functions, especially as electrolyte. Writers of this paper mainly work on the methodology to optimize this kind of fluid by adding various related chemical additives. By varying the pH, the accretion of additives is controlled and consequential effects are studied which is the metallic oxide layer variation before and after each test. Corresponding experiments have been carried out with procedures and results analysis included in the paper.

Development on Micro Precision Truing Method of ELID-Grinding Wheel (1st Report: Principle & Fundamental Experiments)

2005 ◽  
Vol 291-292 ◽  
pp. 207-212 ◽  
Author(s):  
Hitoshi Ohmori ◽  
Shao Hui Yin ◽  
Wei Min Lin ◽  
Yoshihiro Uehara ◽  
Shinya MORITA ◽  
...  
Keyword(s):  
High Precision ◽  
High Efficiency ◽  
High Hardness ◽  
Experimental Results ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Grinding Wheels ◽  
Elid Grinding ◽  
High Toughness ◽  
Diamond Grinding

Metal bonded diamond grinding wheels are widely used in the grinding process, especial in ELID grinding. However, truing is difficult owing to the high toughness of metal bond materials and high hardness of diamond abrasives. To realize high precision and high-efficiency truing, we propose a new micro-truing method consisting of electro-discharge truing and electrolysis-assisted mechanical truing in this paper. The process principle and fundamental experimental results are introduced, and the truing performance is discussed. Research results show that the proposed new method is effective for truing metal bonded diamond grinding wheels.

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