“Performance Comparison of Sol-gel with White Alumina Abrasives for Grinding of Super Duplex Stainless Steel (SDSS)”

Selvakumaran, D.; Arunachalam, N.; Vijayaraghavan, L.; Balan, A.S.S.

doi:10.1016/j.promfg.2018.07.098

Cited by 9 publications

(5 citation statements)

References 10 publications

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“…The grinding efficiency is expressed as the G-ratio divided by the specific grinding energy [10]. Figure 11 shows the grinding efficiency as a function of the peripheral speed at different specific material removal rates.…”

Section: Grinding Efficiency (E)mentioning

confidence: 99%

“…Reduced tensile residual stresses even could enhance the product functionality leading to longer product life and less environmental impact [13]. The peripheral speeds used in grinding of hardened steel with seeded-gel wheels reported in previous works do not exceed 60 m/s [2,[8][9][10]. In most of them, the peripheral speeds are considerably lower than this value.…”

Section: Introductionmentioning

confidence: 99%

“…They reported that a few spherical melted chips of various sizes were observed on the whole surface of the grinding wheel, indicating that during the grinding process a large amount of grinding heat is generated and conducted into the chips. Selvakumaran et al [10] compared the performance of the sol-gel alumina grinding wheel with the white alumina wheel for grinding of superduplex stainless steel up to 26 m/s. To compare the performances of both the grinding wheels, indices such as grinding force, specific grinding energy, surface roughness, grinding ratio, and grinding efficiency were calculated based on the experimental work.…”

Section: Introductionmentioning

confidence: 99%

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Performance comparison of seeded-gel and CBN grinding wheels for cylindrical plunge grinding of 100Cr6 steel

Arantes

Polli

2020

J Braz. Soc. Mech. Sci. Eng.

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The selection of the grinding wheel is an important step during the process planning of grinding operations, especially for high-quality small components of hardened steel. The correct choice of the grinding wheel and the proper selection of cutting parameters can provide ground surfaces with high quality and positively affect the economic aspects of the process. The present work compares the performance of seeded-gel and CBN grinding wheels in external cylindrical plunge grinding of 100Cr6 steel in a range of high peripheral speeds, where it is possible to use both grinding wheels. The comparison was made taking into account the workpiece surface roughness and indices like the grinding ratio, specific grinding energy and grinding efficiency. The use of the CBN grinding wheel resulted in lower surface roughness values than those obtained with the seeded-gel grinding wheel. For both grinding wheels, there was a tendency that increasing peripheral speed reduces the surface roughness values. The best performance of the seeded-gel grinding wheel was found at 150 mm 3 /min/mm, where the grinding efficiency increased with the peripheral speed, and the highest value of all the performed experiments was achieved at 80 m/s. This value was approximately three times the grinding efficiency of the CBN grinding wheel under the same cutting conditions. The highest grinding efficiency for the CBN grinding wheel was achieved at 200 mm 3 /min/mm and 80 m/s. The grinding efficiency of the seeded-gel wheel dropped for this cutting condition due to higher wheel wear.

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Section: Grinding Efficiency (E)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance comparison of seeded-gel and CBN grinding wheels for cylindrical plunge grinding of 100Cr6 steel

Arantes

Polli

2020

J Braz. Soc. Mech. Sci. Eng.

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“…The corundum particles used in this work are based on common abrasives for industrial purposes. [8][9][10] They show very high chemical and mechanical stability and are available in large amounts at very low prices in the range of 1-2 EUR/kg. Chemically, corundum is an aluminum oxide (α-Al2O3) and is produced by melting purified aluminum oxide in an electric furnace.…”

Section: Introductionmentioning

confidence: 99%

High-Purity Corundum as Support for Affinity Extractions from Complex Samples

Völzke¹,

Shamami²,

Gawlitza³

et al. 2022

Preprint

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Nonporous corundum powder, known as an abrasive material in the industry, was functionalized covalently with protein binders to isolate and enrich specific proteins from complex matrices. The materials based on corundum were characterized by TEM, ESEM, BET, DLS, and zeta potential measurements. The strong Al-O-P bonds between the corundum surface and amino phosphonic acids are used to introduce functional groups for further conjugations. The common crosslinker glutaraldehyde was compared with a hyperbranched polyglycerol (PG) of around 10 kDa. The latter is oxidized with periodate to generate aldehyde groups that can covalently react with the amines of the surface and the amino groups from the protein via a reductive amination process. The amount of bound protein was quantified via aromatic amino acid analysis (AAAA). This work shows that oxidized polyglycerol can be used as an alternative to glutaraldehyde. With polyglycerol, more of the model protein bovine serum albumin (BSA) could be attached to the surface under the same conditions, and lower nonspecific binding (NSB) was observed. As a proof of concept, IgG was extracted with protein A from crude human plasma. The purity of the product was examined by SDS-PAGE. A binding capacity of 1.8 mg IgG per g of corundum powder was achieved. The advantages of corundum are the very low price, extremely high physical and chemical stability, pressure resistance, favorable binding kinetics, and flexible application.

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“…The experimental results concluded that SG-Al 2 O 3 under cryogenic cooling substantially improved the grindability and surface integrity. Selvakumaran et al 9 reported that SG-Al 2 O 3 wheel retains wheel sharpness for a longer duration than W-Al 2 O 3 during grinding of super duplex stainless steel (SDSS). The properties of SG-Al 2 O 3 wheel, such as high fracture toughness and micro-fracture ability, helps in better grinding performance as compared to W-Al 2 O 3 wheel.…”

Section: Introductionmentioning

confidence: 99%

Grindability studies of thermomechanically processed advanced high strength steel using sol-gel and fused alumina grain-based grinding wheels

Magham

Vijayaraghavan

Sankaran

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Advanced high strength steels have excellent strength-to-weight ratio and are widely used for automotive and structural applications. Grinding is commonly used as a final machining process for these materials to achieve the required dimensional tolerance and surface quality. In this work, the grindability of as-received microstructure of ferrite-pearlite and in-house developed ferrite-bainite-martensite steels using polycrystalline white fused alumina and microcrystalline sol-gel alumina grinding wheels under flood and minimum quantity lubrication conditions is studied. Grindability of these steels was evaluated based on the wheel wear, grinding forces, force ratio, specific cutting energy, surface roughness (Ra), and surface morphology. The sol-gel alumina wheel was observed with higher wear flat area and forces under all the grinding conditions as compared with white fused alumina wheel. The white fused alumina wheel exhibited higher force ratio values for all the grinding conditions than the sol-gel alumina wheel. The energy required per unit volume of material removal is lower for the white fused alumina wheel in both the steels under flood and minimum quantity lubrication conditions. This is due to the retention of sharpness of abrasive grains by self-sharpening for white fused alumina wheel than the sol-gel alumina. The presence of fractured, melted, and hollow chips on the ferrite-pearlite and ferrite-bainite-martensite steels under both the grinding condition confirms the change in material removal mechanism with the presence of higher wear flat area of the sol-gel alumina wheel. Based on the obtained results, the white fused alumina wheel was found to be a suitable grinding wheel for grinding of both the steels under all grinding conditions compared to the sol-gel alumina wheel.

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“Performance Comparison of Sol-gel with White Alumina Abrasives for Grinding of Super Duplex Stainless Steel (SDSS)”

Cited by 9 publications

References 10 publications

Performance comparison of seeded-gel and CBN grinding wheels for cylindrical plunge grinding of 100Cr6 steel

Performance comparison of seeded-gel and CBN grinding wheels for cylindrical plunge grinding of 100Cr6 steel

High-Purity Corundum as Support for Affinity Extractions from Complex Samples

Grindability studies of thermomechanically processed advanced high strength steel using sol-gel and fused alumina grain-based grinding wheels

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