Enhanced magnetic abrasive finishing of Ti–6Al–4V using shear thickening fluids additives

Fan, Zenghua; Tian, Yebing; Zhou, Qiang; Chen, Shi

doi:10.1016/j.precisioneng.2020.05.001

Cited by 55 publications

(18 citation statements)

References 34 publications

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“…Fan et al [158] developed a finishing media containing a combination of shear thickening fluid, carbonyl iron (250 mm) and silicon carbide (150 mm) particles as illustrated in Figure 17. The finishing media was used to Fig.…”

Section: Magnetic Abrasive Finishingmentioning

confidence: 99%

“…Schematic representation of MAF, (a) magnetic brush is formed once magnetic field is applied between the magnetic poles; (b) magnetic brush contacts the micro-peak at the surface of the workpiece; and (c) the surface peak is removed. Reuse with permission from Elsevier, Fan et al [158]. Fig.…”

Section: Magnetic Abrasive Finishingmentioning

confidence: 99%

“…17. Flow chat describing the preparation of MAF finishing media, reuse with permission from Elsevier, Fan et al [158].…”

Section: Magnetic Abrasive Finishingmentioning

confidence: 99%

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An overview of conventional and non-conventional techniques for machining of titanium alloys

et al. 2020

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Machining is one of the major contributors to the high cost of titanium-based components. This is as a result of severe tool wear and high volume of waste generated from the workpiece. Research efforts seeking to reduce the cost of titanium alloys have explored the possibility of either eliminating machining as a processing step or optimising parameters for machining titanium alloys. Since the former is still at the infant stage, this article provides a review on the common machining techniques that were used for processing titanium-based components. These techniques are classified into two major categories based on the type of contact between the titanium workpiece and the tool. The two categories were dubbed conventional and non-conventional machining techniques. Most of the parameters that are associated with these techniques and their corresponding machinability indicators were presented. The common machinability indicators that are covered in this review include surface roughness, cutting forces, tool wear rate, chip formation and material removal rate. However, surface roughness, tool wear rate and metal removal rate were emphasised. The critical or optimum combination of parameters for achieving improved machinability was also highlighted. Some recommendations on future research directions are made.

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Section: Magnetic Abrasive Finishingmentioning

confidence: 99%

Section: Magnetic Abrasive Finishingmentioning

confidence: 99%

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An overview of conventional and non-conventional techniques for machining of titanium alloys

et al. 2020

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“…The continuous phase mainly refers to the carrier fluid for preparing STF, and its influencing factors include type and concentration. Additives mainly refer to solid or liquid substances used to improve the performance of the STF system to modify the surface of the particles, increase the system's stability, and improve the compatibility between the dispersed phase and the continuous phase [5,20]. The external environment includes temperature, electric field, magnetic field, etc [21].…”

Section: Introductionmentioning

confidence: 99%

Rheological characteristics analysis of shear thickening fluids based on response surface methodology

Zhao¹,

Zhang²,

Liu³

et al. 2022

Mater. Res. Express

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This paper analyzed the influence of various components and the external environment on the rheological properties of shear thickening fluid (STF). The single-factor experimental study was carried out with the silica particle size, the mass fraction of silica particles, the continuous phase's average molecular weight, and the temperature as the influencing factors. Obtain the influence of various factors on the initial viscosity, critical shear rate, thickening period and thickening ratio of STF samples. According to the crossover relationship between the shear stress and the intermolecular force when the shear thickening occurs, the STF's critical shear rate criterion is constructed. By introducing the mechanical balance between small molecules, the relationship between the particles' volume fraction and the distance between particles in the suspension system is established. The influencing factors and formulas of the STF's critical shear rate and shear capacity are deduced, which supports the conclusions obtained in the single-factor experiment. Based on the single-factor experiment conclusion, the mass fraction of silica particles, the average molecular weight of the continuous phase and the temperature are used as the influencing factors, and the critical shear rate, shear thickening ratio and maximum viscosity are the responses indicators. According to the Box-Behnken response surface methodology (RSM) design, 15 analysis experiments with three factors and three levels are carried out. Obtain the rheological characteristics of the STF and regression equation between each factor, based on the three-dimensional response surface graph and F-value in ANOVA result. We found that among the interaction effects, the interaction between the continuous phase's average molecular weight and the temperature has the most significant impact on the critical shear rate of the STF. The interaction between the silica particles' mass fraction and the continuous phase's average molecular weight significantly impacts the shear thickening ratio of the STF. The interaction between silica particles' mass fraction and the temperature has the most significant impact on the maximum viscosity of the STF. Finally, according to the response surface methodology experimental results and ideal STF rheological characteristics standard in engineering applications, when the mass fraction of silica particles is 35%, the average molecular weight of the continuous phase is 387, and the temperature is 20 ℃. The critical shear rate of the STF system is 5.84 1/s, the shear thickening ratio is 102.8, and the peak viscosity is 1191.7 Pa∙s, reaching the optimal theoretical value within the value scope.

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“…The surface roughness of inner surface reduced from 7 μm to 1 μm with the improvement the hardness and residual stress. Fan et al [16] developed an intelligent finishing media by combining shear thickening fluids (polyethylene glycol and fumed silica), SiC abrasives, Carbonyl iron particles (CIPs). Finishing experiments were conducted on Ti-6Al-4V workpiece, which demonstrated that the enhanced finishing media could achieve nano-level surface finishing.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the magnetorheological shear thickening finishing with radial slotted magnetic pole for Sine surface

Sun¹,

Fan²,

Tian

et al. 2022

Preprint

Self Cite

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Free-form surfaces have widespread applications in the fields of integrated circuit, and automobile sectors because of the typical geometric characteristics. Surface finishing of free-form surfaces is a critical process to fulfill target quality. In present study, a magnetorheological shear thickening finishing (MSTF) method is proposed for Sine surface finishing based on the designed finishing tool and the developed MSTF media. The MSTF utilizes a flexible finishing tool, integrating a slotted cylindrical permanent magnetic pole with radial magnetization, is fabricated to dominate rheological properties of finishing media to guarantee the finishing force. To obtain sufficiently large magnetic flux density and magnetic field gradients in the finishing zone, finite element analysis (FEA) is used to obtain the optimal dimensions and structure of the finishing tool. The principle of the method is illustrated and mathematical model of material removal is established. Finishing experiments were conducted on Sine surface fabricated by SUS304 based on the developed MSTF media and the established platform. The effects of finishing parameters on surface roughness are evaluated quantitatively. The results substantiate that the material was uniformly re-moved over the entire Sine surface and the developed method is capable for Si-ne finishing with a more than 87% improvement in surface roughness. The method in the paper shows signs of future success in finishing free-form surfaces in a wide range of industrial applications.

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Enhanced magnetic abrasive finishing of Ti–6Al–4V using shear thickening fluids additives

Cited by 55 publications

References 34 publications

An overview of conventional and non-conventional techniques for machining of titanium alloys

An overview of conventional and non-conventional techniques for machining of titanium alloys

Rheological characteristics analysis of shear thickening fluids based on response surface methodology

Investigation on the magnetorheological shear thickening finishing with radial slotted magnetic pole for Sine surface

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