ELID Grinding of Sapphire using High Strength Iron Bond Grinding Wheel ～Grinding characteristics using straight grinding wheel～

AbstractAiming at the problem of poor processing performance and difficult processing in the process of aluminum-based diamond composites for electronic packaging, this paper uses electrolytic in-process dressing (ELID) grinding technology to grind the aluminum-based diamond composites. The quadratic orthogonal rotation combination method was used to investigate the influence law and degree of grinding depth, grinding wheel linear velocity, duty cycle and electrolysis current on surface roughness. The ELID grinding optimization process parameters of aluminum-based diamond composites obtained by LINGO software are: grinding depth 9.3μm, grinding wheel linear speed 36m/s, duty cycle 63.7%, electrolysis current 11.5A. The surface of the aluminum-based diamond composite with a surface roughness of 125 nm was machined by this optimized process parameter combination.

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Forming Mechanism of Composite Abrasive Grains in Oxide Film on ELID Wheel and its Microstructure

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.709.77 ◽

2016 ◽

Vol 709 ◽

pp. 77-81 ◽

Cited By ~ 1

Author(s):

Ji Cai Kuai ◽

Cheng Ran Jiang ◽

Jiang Wei Wang

Keyword(s):

Oxide Film ◽

Grinding Wheel ◽

Compound Structure ◽

Wheel Surface ◽

Forming Mechanism ◽

Elid Grinding ◽

Abrasive Grains ◽

Shaped Crack

In this paper we analyze the forming mechanism of composite abrasive grains in oxide film on ELID grinding wheel surface, By using composition information and by taking advantage of microscale structure, we have investigated that abrasive grains surface is covered by a layer of oxide film and the fresh oxide film is loose and porous like turtle shaped crack when crushed and dried. The elements of oxide film consist of α-Fe2O3 with sphere grain of 5-50nm. This phenomena is demonstrated that the composite abrasive grains in oxide film is a compound structure which is centered by abrasive grains, with α-Fe2O3,Fe (OH)3 surrounded.

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Experimental study on the characteristic and function of oxide film formed on grinding wheel in ELID precision grinding

Industrial Lubrication and Tribology ◽

10.1108/ilt-04-2019-0164 ◽

2019 ◽

Vol 72 (5) ◽

pp. 549-555

Author(s):

Jia-Bo Zhang ◽

Yang Yang ◽

Xiao-Hui Zhang ◽

Jia-Liang Guan ◽

Li-Yan Zheng ◽

...

Keyword(s):

Oxide Film ◽

Formation Rate ◽

Combination Method ◽

Grinding Wheel ◽

Precision Grinding ◽

Content Type ◽

Elid Grinding ◽

Grinding Fluid ◽

Film Forming ◽

And Function

Purpose The purpose of this study is to investigate the characteristic and function of oxide film formed on grinding wheel in electrolytic in-process dressing (ELID) precision grinding and improve the quality of ELID grinding. Design/methodology/approach Dynamic film forming experiments were carried out with a simulation device close to the actual processing conditions. Then, the ELID grinding experiments of bearing rings were performed using grinding wheels with good film forming effect. The experiment was designed by quadratic regression general rotation combination method. The influence of grinding depth, electrolytic voltage, duty cycle and grinding wheel linear speed on grinding effect is analyzed. Findings A mathematical model for the formation rate of oxide film was established. The experiments show that the composition of grinding wheel and grinding fluid, as well as the electrical parameters, influence the film forming effect. Thus, the oxide film plays an important role in ELID grinding. Originality/value This study provides a reference for the design and selection of grinding wheel and grinding fluid and the setting of process parameters in ELID grinding.

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.291-292.213 ◽

2005 ◽

Vol 291-292 ◽

pp. 213-220 ◽

Cited By ~ 1

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.

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703 Development of grinding wheel for ELID grinding by static stiffness presumption using the modeling method of grinding wheel

The Proceedings of Ibaraki District Conference ◽

10.1299/jsmeibaraki.2011.19.181 ◽

2011 ◽

Vol 2011.19 (0) ◽

pp. 181-182

Author(s):

Kazuya TAKI ◽

Nobuhide ITOH ◽

Takazo YAMADA ◽

Hitoshi OHMORI ◽

Teruko KATO ◽

...

Keyword(s):

Modeling Method ◽

Grinding Wheel ◽

Static Stiffness ◽

Elid Grinding

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1401 Development of Grinding Wheel using waterweed carbon material for Eco-friendly ELID Grinding

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2006.4.0_19 ◽

2006 ◽

Vol 2006.4 (0) ◽

pp. 19-20

Author(s):

Nobuhide ITOH ◽

Yuhji HASEGAWA ◽

Akihiko NENOTO ◽

Hitoshi OHMORI ◽

Teruko KATOH ◽

...

Keyword(s):

Carbon Material ◽

Grinding Wheel ◽

Elid Grinding

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Study on Electrolysis Performance of Bamboo Charcoal Bonded Grinding Wheel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.135.447 ◽

2010 ◽

Vol 135 ◽

pp. 447-451

Author(s):

Wei Li ◽

Jian Wu ◽

Bao Gong Geng

Keyword(s):

Smooth Surface ◽

Phenolic Resin ◽

Xrd Analysis ◽

Surface Generation ◽

Grinding Wheel ◽

Bamboo Charcoal ◽

Sintering Process ◽

Elid Grinding ◽

Environmental Friendly ◽

Hard And Brittle Materials

Electrolytic in-process dressing (ELID) Grinding was an effective machining method for gaining of super smooth surface for hard and brittle materials due to its excellent surface generation capabilities. Bamboo charcoal bonded (BCB) grinding wheel was an environmental friendly ELID grinding wheel which was made up of bamboo charcoal and phenolic resin as bonding agent with high temperature sintering process. In this paper, the electrolysis performances of the BCB grinding wheel with the different resin ratios were researched, and the surface of BCB grinding wheel formed a dense oxide layer in electrolysis action, was illustrated with SEM and XRD analysis.

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A Study of a New ELID Grinding Fluid by BP Neural Network Model

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.58-60.1792 ◽

2011 ◽

Vol 58-60 ◽

pp. 1792-1796

Author(s):

Wei Li ◽

Yu Jie Fan

Keyword(s):

Neural Network ◽

Bp Neural Network ◽

Grinding Wheel ◽

Precision Grinding ◽

Elid Grinding ◽

Environmental Friendly ◽

Grinding Fluid ◽

Hard And Brittle Materials ◽

Ultra Precision ◽

Bp Neural Network Model

Electronic in-process dressing (ELID) grinding will be a main technology of ultra-precision grinding which has been widely adopted to the ultra-precision and high effectively machining of hard and brittle materials. This study puts forward a new environmental friendly bamboo charcoal bonded (BCB) grinding wheel and develops a new ELID grinding fluid. An oxide layer is mostly determined by the electric performance of grinding fluid in the experiment. This paper founds a model to forecast grinding fluid’s electric performance by BP neural network and MATLAB. This method can be used in developing of ELID grinding machining fluid to improve the ELID grinding effect.

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