Wear phenomena of grinding wheels with sol–gel alumina abrasive grains and glass–ceramic vitrified bond during internal cylindrical traverse grinding of 100Cr6 steel

Nadolny, Krzysztof

doi:10.1007/s00170-014-6432-0

Cited by 37 publications

(27 citation statements)

References 24 publications

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“…The dominant microcrystalline active abrasive grain vertexes wear phenomenon is the creation of flat surfaces as a result of their plastic flow [28][29][30]. It has also been observed that the phenomena of oxide layer shedding and plastically deformed grain layers occur periodically on the smoothedout surfaces of the active vertexes [30,31]. This process is caused by fatigue and thermo-fatigue wear, as a result of which sharp edges of crystals located below the plastically deformed surface layer are uncovered ( Fig.…”

Section: Sol-gel Alumina Abrasives Wear Phenomenamentioning

confidence: 99%

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The effect of wear phenomena of grinding wheels with sol-gel alumina on chip formation during internal cylindrical plunge grinding of 100Cr6 steel

Nadolny

Kapłonek

2016

Int J Adv Manuf Technol

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The article presents the results of experimental investigations to determine the effect of wear phenomena of grinding wheels with sol-gel alumina abrasive grains on chip formation during internal cylindrical plunge grinding of 100Cr6 steel. Basic wear phenomena conducted during the grinding process using microcrystalline sintered corundum abrasives are described. In order to expand our knowledge of this phenomena, experimental tests were conducted in two stages. In stage 1, only one opening was machined, which corresponded to the removal of 464 mm 3 of workpiece material. In the second stage, the process was carried to machine 100 subsequent openings (material removal V w = 46, 400 mm 3). Such methodology allowed one to observe changes in the form of chips resulting from the progressive wear of the grinding wheel components. The form and size of the chips were identified by recording and analyzing the SEM micrographs of the chips for both grinding stages, respectively. Conducted studies have shown that the dominant type of chips, shaped in the initial period of the grinding wheel's life, are large (several hundred μm in length) flowing-type chips resulting from material removal by sharp cutting edges of abrasive grain active vertices. At the end of the grinding wheel's life, when active vertices of abrasive grains have clear signs of large fatigue and thermo-fatigue wear, only in the near-edge zones of the wheel can flowing-type and shearingtype chips (usually less than 100 μm in length) be observed, while knife-type and slice-type microchips were predominately registered on the whole grinding wheel surface.

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Section: Sol-gel Alumina Abrasives Wear Phenomenamentioning

confidence: 99%

“…Sol-gel alumina abrasives dominant wear phenomenabased on drawings of the Rappold Winterthur Group and the authors' own material[31] …”

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confidence: 99%

The effect of wear phenomena of grinding wheels with sol-gel alumina on chip formation during internal cylindrical plunge grinding of 100Cr6 steel

Nadolny

Kapłonek

2016

Int J Adv Manuf Technol

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“…With respect to experimental grinding tests, studies have been carried out to examine the influence of grinding parameters on wear evolution, and hence, on the efficiency of the process [8,10,11]. In this case, the main challenge of studying a specific type of wheel wear is in terms of isolating this from other types of wear.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, not only wear flat was found to occur, but also other kinds of simultaneous wear, with the evolution of wear flat being interrupted. Nadolny [11] conducted internal grinding experiments, showing not only wear flat on the abrasive wheel surface but also other kinds of wear. The aim of this study was to compare the wear behavior of different wheel configurations, varying the bond.…”

Section: Introductionmentioning

confidence: 99%

An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process

Godino¹,

Pombo²,

Galíndez³

et al. 2018

Metals

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Abstract:Manufacturing of grinding wheels is continuously adapting to new industrial requirements. New abrasives and new wheel configurations, together with wheel wear control allow for grinding process optimization. However, the wear behavior of the new abrasive materials is not usually studied from a scientific point of view due to the difficulty to control and monitor all the variables affecting the tribochemical wear mechanisms. In this work, an original design of pin-on-disk tribometer is developed in a CNC (Computer Numerical Control) grinding machine. An Alumina grinding wheel with special characteristics is employed and two types of abrasive are compared: White Fused Alumina (WFA) and Sol-Gel Alumina (SG). The implemented tribometer reaches sliding speeds of between 20 and 30 m/s and real contact pressures up to 190 MPa. The results show that the wear behavior of the abrasive grains is strongly influenced by their crystallographic structure and the tribometer appears to be a very good tool for characterizing the wear mechanisms of grinding wheels, depending on the abrasive grains.

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“…The tribochemical nature of wear flat raises the need to address this issue, mainly from the perspective of studying the grinding process or implementing tribological tests, particularly pin on disk tests. With respect to experimental grinding tests, studies have been carried out to examine the influence of grinding parameters on wear evolution, and hence, on the efficiency of the process [8], [10], [11]. In this case, the main challenge of studying a specific type of wheel wear is in terms of isolating this from other types of wear.…”

Section: Introductionmentioning

confidence: 99%

An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process

Godino¹,

Pombo²,

Sánchez³

et al. 2018

Preprint

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Manufacturing of grinding wheels is continuously adapting to new industrial requirements. New abrasives and new wheel configurations, together with wheel wear control allow for grinding process optimization. However, the wear behavior of the new abrasive materials is not usually studied from a scientific point of view due to the difficulty to control and monitor all the variables affecting the tribochemical wear mechanisms. In this work an original design of pin on disk tribometer is developed in a CNC grinding machine. An Alumina grinding wheel with special characteristics is employed and two types of abrasive are compared: White Fused Alumina (WFA) and Sol-Gel Alumina (SG). The implemented tribometer reaches sliding speeds of between 20 and 30 m/s and real contact pressures up to 190 MPa. The results show that the wear behavior of the abrasive grains is strongly influenced by their crystallographic structure and the tribometer appears to be a very good tool for characterizing the wear mechanisms of grinding wheels, depending on the abrasive grains.

show abstract

Wear phenomena of grinding wheels with sol–gel alumina abrasive grains and glass–ceramic vitrified bond during internal cylindrical traverse grinding of 100Cr6 steel

Cited by 37 publications

References 24 publications

The effect of wear phenomena of grinding wheels with sol-gel alumina on chip formation during internal cylindrical plunge grinding of 100Cr6 steel

The effect of wear phenomena of grinding wheels with sol-gel alumina on chip formation during internal cylindrical plunge grinding of 100Cr6 steel

An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process

An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process

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