Study on mechanism and theoretical model of tool wear in fluorophlogopite glass-ceramics turning

Ma, Lianjie; Sun, Zhichao; Zhang, Li; Deng, Hongchang; Tan, Yanqing; Kong, Zhi; Wei, Zhiqi

doi:10.1016/j.jmatprotec.2019.116284

Cited by 14 publications

(4 citation statements)

References 19 publications

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“…In addition, ceramic reinforcements have been attracting attention due to their high melting temperature, hardness and corrosion resistance. A number of application fields such as automotive, military and electronics prefer to use ceramics today [ 23 , 24 ]. On the basis of above discourses, CrC was employed as the ceramic reinforcement particle thanks to their superior mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

et al. 2021

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Tribological properties of engineering components are a key issue due to their effect on the operational performance factors such as wear, surface characteristics, service life and in situ behavior. Thus, for better component quality, process parameters have major importance, especially for metal matrix composites (MMCs), which are a special class of materials used in a wide range of engineering applications including but not limited to structural, automotive and aeronautics. This paper deals with the tribological behavior of Cu-B-CrC composites (Cu-main matrix, B-CrC-reinforcement by 0, 2.5, 5 and 7.5 wt.%). The tribological characteristics investigated in this study are the coefficient of friction, wear rate and weight loss. For this purpose, four levels of sliding distance (1000, 1500, 2000 and 2500 m) and four levels of applied load (10, 15, 20 and 25 N) were used. In addition, two levels of sliding velocity (1 and 1.5 m/s), two levels of sintering time (1 and 2 h) and two sintering temperatures (1000 and 1050 °C) were used. Taguchi’s L16 orthogonal array was used to statistically analyze the aforementioned input parameters and to determine their best levels which give the desired values for the analyzed tribological characteristics. The results were analyzed by statistical analysis, optimization and 3D surface plots. Accordingly, it was determined that the most effective factor for wear rate, weight loss and friction coefficients is the contribution rate. According to signal-to-noise ratios, optimum solutions can be sorted as: the highest levels of parameters except for applied load and reinforcement ratio (2500 m, 10 N, 1.5 m/s, 2 h, 1050 °C and 0 wt.%) for wear rate, certain levels of all parameters (1000 m, 10 N, 1.5 m/s, 2 h, 1050 °C and 2.5 wt.%) for weight loss and 1000 m, 15 N, 1 m/s, 1 h, 1000 °C and 0 wt.% for the coefficient of friction. The comprehensive analysis of findings has practical significance and provides valuable information for a composite material from the production phase to the actual working conditions.

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Section: Introductionmentioning

confidence: 99%

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

et al. 2021

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“…The wear rate of PE balls was determined using Eqn () 29, 30 :

WR = \frac{V}{F \cdot L}

where WR is wear rate (mm 3 (N m) −1 ), L is the total sliding distance (m), V is the wear volume (mm 3 ) and F is testing load (N). V was calculated via Eqn () 31, 32 :

V = \frac{π (R - \sqrt{R^{2} - (D^{2} / 4)})}{6} \times [\frac{3 D^{2}}{4} + {((), R goodbreak- \sqrt{R^{2} - \frac{D^{2}}{4}})}^{2}]

where R is the radius of the ball (mm) and D is the wear diameter (mm).…”

Section: Methodsmentioning

confidence: 99%

Glycerol‐modified poly(vinyl alcohol)/poly(ethylene glycol) self‐healing hydrogel for artificial cartilage

Chai

et al. 2022

Polymer International

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Poly(vinyl alcohol) (PVA) hydrogels have shown potential applications in bionic articular cartilage due to their tissue‐like viscoelasticity, good biocompatibility and low friction. However, their lack of adequate mechanical properties is a key obstacle for PVA hydrogels to replace natural cartilage. In this study, poly(ethylene glycol) (PEG) and glycerol were introduced into PVA, and a PVA/PEG–glycerol composite hydrogel was synthesized using a mixing physical crosslinking method. The mechanical properties, hydrophilicity and tribological behavior of the PVA/PEG–glycerol hydrogel were investigated by changing the concentration of glycerol in PEG. The results showed that the tensile strength of the hydrogel reached 26.6 MPa at 270% elongation at break with 20 wt% of glycerol plasticizer, which satisfied the demand of natural cartilage. In addition, the excellent hydrophilicity of glycerol provides good lubricating properties for the composite gel under dry friction. Meanwhile, self‐healing and cellular immunity assays demonstrated that the composite gel could have good self‐healing ability and excellent biocompatibility even in the absence of external stimuli. This study provides a new candidate material for the design of articular cartilage, which has the potential to facilitate advances in artificial joint cartilage repair. © 2022 Society of Industrial Chemistry.

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“…[16][17][18][19] Then wear behaviors, such as the abrasive wear, adhesive wear, diffusion wear, and oxidation wear on the rake face and flank face of cutting tools, are usually experimentally studied. [20][21][22] Scanning electron microscope (SEM) and energy dispersion spectrum (EDS) are usually conducted to analyze the micrograph of worn area. [23][24][25] For free-cutting steels, wear behavior and tool life can also be investigated using SEM and EDS analysis of worn out inserts.…”

Section: Introductionmentioning

confidence: 99%

Study on the tool life analysis for free-cutting steels

Zhang

Yang

Tang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Experimental study and theoretical calculation on the tool lives of free-cutting steels with different additions were carried out in terms of the friction characteristics, chip deformation, and normal stress distribution. The average friction coefficient, shear angle, and maximum normal stress were then calculated, and the influence of them on tool life was analyzed and discussed carefully. The free-cutting steel with Bi addition (MB) presented the best tool life of about 9200 and 5200 s at the speed of 150 and 200 m/min, respectively, which was mainly due to the combined effect of the lower average friction coefficient, maximum normal stress, and higher shear angle. When the cutting speed increased to 300 m/min, the tool life decreased rapidly, which was mainly caused by the serious tool wear behavior dominated by the high cutting temperature. Differing from the calculated results of shear angles based on Lee and Shaffer’s assumption, the measured shear angles decreased with the cutting speed ranging from 150 to 250 m/min, resulting from the thermal softening of workpiece material during machining. Moreover, the present findings indicated that the cutting process became unstable when the maximum normal stress on the tool nose was larger than 2 GPa, where catastrophic failures occurred, resulting in accelerated fracture of the tool. The research findings not only give more insight into the effect of friction characteristics, chip deformation, and normal stress distribution on the tool lives, but also have significance for the machining of free-cutting steels.

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Study on mechanism and theoretical model of tool wear in fluorophlogopite glass-ceramics turning

Cited by 14 publications

References 19 publications

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

Tribological Aspects, Optimization and Analysis of Cu-B-CrC Composites Fabricated by Powder Metallurgy

Glycerol‐modified poly(vinyl alcohol)/poly(ethylene glycol) self‐healing hydrogel for artificial cartilage

Study on the tool life analysis for free-cutting steels

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