Influence of Grain Size and Feed Rate on Selected Aspects of Corundum Ceramic Grinding Using Spherical Diamond Heads

Szajna, Artur; Bazan, Anna

doi:10.12913/22998624/142629

Cited by 2 publications

(1 citation statement)

References 28 publications

(30 reference statements)

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“…Optical measurements, including the focus variation method, are prone to the presence of artifacts in the form of unusual peaks, which greatly distort the actual

values of the analyzed surface. In order to avoid possible errors when reducing areas with artifacts from topography maps, instead of the

parameter, the sum of parameters related to the bearing area curve (BAC; the Abbott–Firestone curve) was analyzed

(reduced maximum height) [ 44 ]. Parameters such as reduced peak height

and reduced dale height

largely retain information about the height of peaks and the depth of pits, but also filter information about unusual deviations from the mean area.…”

Section: Methodsmentioning

confidence: 99%

Modeling of Surface Topography after Milling with a Lens-Shaped End-Mill, Considering Runout

et al. 2022

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The paper presents a method of forecasting the product surface topography after five-axis machining with a lens-shaped end-mill. Surface roughness is one of the key parameters considered when assessing the effectiveness of the machining process, especially in the aviation, automotive, tooling and medical equipment industries. The developed method, the first published, presented in the paper is based on the analytical equations of the trajectory of the cutting edge motion, on the basis of which the cutter action surface is generated. The developed model takes into account: cutting depth, cutting width, feed, lead angle and radial runout. Experimental studies were conducted using three different materials: 40HM steel, Al7035 aluminum alloy and Ti Grade 5 titanium alloy. Various values of the cutting width parameters and different feeds were used in the tests. Based on the results of the experimental tests, an empirical model (response surface model) was determined and was then used to verify the simulation model. The simulation results and the results of experimental tests were compared and conclusions were drawn regarding the developed models. The developed models supported by numerical simulation can be used to approximately estimate the influence of the width of cut br and feed ft on selected height characteristics Sa and Sz^ of the geometric structure of the surface (GSS) after machining with a lens-shaped end-mill in terms of the process parameters adopted in the tests. It was found that the influence of the ft on the Sa and Sz^ is greater for small values of br. The effect of br is greater with lower ft values. The cutting width br has the greatest influence on Sa and Sz^, and ft and the interaction of these parameters has the least influence.

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“…Optical measurements, including the focus variation method, are prone to the presence of artifacts in the form of unusual peaks, which greatly distort the actual

values of the analyzed surface. In order to avoid possible errors when reducing areas with artifacts from topography maps, instead of the

parameter, the sum of parameters related to the bearing area curve (BAC; the Abbott–Firestone curve) was analyzed

(reduced maximum height) [ 44 ]. Parameters such as reduced peak height

and reduced dale height

largely retain information about the height of peaks and the depth of pits, but also filter information about unusual deviations from the mean area.…”

Section: Methodsmentioning

confidence: 99%

Modeling of Surface Topography after Milling with a Lens-Shaped End-Mill, Considering Runout

et al. 2022

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Effect of graphite additive on physical, mechanical, and wearing properties of Al₂O₃/E-glass/phenol formaldehyde hybrid composite grinding wheel

Tafere,

Gerezgiher,

Tesfay

2024

Composites and Advanced Materials

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The research was conducted to develop and assess the performance of composite grinding wheels enhanced with a graphite additive. These composite wheels were composed of aluminum oxide as abrasive and reinforcement material, E-glass as a reinforcement material, and phenolic resin as the matrix material. Various concentrations of graphite (4%, 8%, 12%, and 16% by weight) were incorporated into the composite formulations. Aluminum oxide, phenolic resin, and graphite were hand-stirred and combined. The mixture was then compressed at 94.4 MPa at room temperature, followed by heat treatment at 204°C for 50 min. The incorporation of graphite into Al2O3/E-glass/phenol formaldehyde composite grinding wheels significantly enhanced their mechanical properties and grinding performance. Increasing the graphite content up to 12 wt% in grinding wheels (GW3) resulted in a steady increase in density (from 1.9 g/cm³ to 2.1 g/cm³) and a corresponding decrease in porosity (from 16.5% to 3.6%) compared to the 4 wt% graphite-filled grinding wheels (GW1). Moreover, GW3 showed improvements in push-out strength by 60.6% (from 4.1 MPa to 6.57 MPa) and compressive strength by 15.7% (from 21.8 MPa to 25.17 MPa) compared to GW1. Wheels containing 16 wt% graphite (GW4) exhibited the lowest wear rate, reducing it by 89% (from 0.105 g/cm2 to 0.019 g/cm2) compared to GW1. These findings suggest that graphite incorporation is a promising approach for developing more durable and efficient grinding wheels, with the optimal graphite content for balancing strength and wear being 12 wt%.

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Influence of Grain Size and Feed Rate on Selected Aspects of Corundum Ceramic Grinding Using Spherical Diamond Heads

Cited by 2 publications

References 28 publications

Modeling of Surface Topography after Milling with a Lens-Shaped End-Mill, Considering Runout

Modeling of Surface Topography after Milling with a Lens-Shaped End-Mill, Considering Runout

Effect of graphite additive on physical, mechanical, and wearing properties of Al₂O₃/E-glass/phenol formaldehyde hybrid composite grinding wheel

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Influence of Grain Size and Feed Rate on Selected Aspects of Corundum Ceramic Grinding Using Spherical Diamond Heads

Cited by 2 publications

References 28 publications

Modeling of Surface Topography after Milling with a Lens-Shaped End-Mill, Considering Runout

Modeling of Surface Topography after Milling with a Lens-Shaped End-Mill, Considering Runout

Effect of graphite additive on physical, mechanical, and wearing properties of Al2O3/E-glass/phenol formaldehyde hybrid composite grinding wheel

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Product

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Effect of graphite additive on physical, mechanical, and wearing properties of Al₂O₃/E-glass/phenol formaldehyde hybrid composite grinding wheel