Effect of grain wear on material removal behaviour during grinding of Ti-6Al-4V titanium alloy with single aggregated cBN grain

Zhao, Biao; Ding, Wenfeng; Zhou, Yang; Su, Honghua; Xu, Jie

doi:10.1016/j.ceramint.2019.04.215

Cited by 34 publications

(15 citation statements)

References 28 publications

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“…( 6), where τ f is the frictional stress, µ is the coefficient of friction, and σ n is the normal contact stress [17]. The friction coefficients can be calculated from the grinding force ratios obtained in the grinding tests [6] (the coefficients are 0.289 and 0.186 under dry and wet grinding conditions, respectively, in this study). ABAQUS/Explicit software also introduces an inelastic heat fraction, named the Taylor-Quinney empirical constant (often fixed to be 90 % [17])…”

Section: Boundary Conditions and The Contacting Propertiesmentioning

confidence: 99%

“…It was found that thermal-shock-induced breakage was the main reason for wheel wear, and water-based fluids showed 2 to 4 times more wear than neat oil. Zhao et al [6] implemented single-grit grinding experiments of Ti-64 alloy to estimate the grinding performance of sintered Aggregated cubic Boron Nitride (AcBN) grits. The outcomes indicated that AcBN grains obtained a more steady grinding force ratio, higher material removal rate, and more stable wear areas than common monocrystalline cBN ones.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical and Experimental Study on the Grinding Performance of Ti-Based Super-Alloy

Phi

Hoang²,

Nguyen

et al. 2021

Int. j. eng. technol. innov.

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The experiments of the surface grinding of Ti-6Al-4V grade 5 alloy (Ti-64) with a resin-bonded cubic Boron Nitride (cBN) grinding wheel are performed in this research to estimate the influence of cutting parameters named workpiece infeed speed, Depth of Cut (DOC), cooling condition on the grinding force, force ratio, and specific energy. A finite element simulation model of single-grain grinding of Ti-64 is also implemented in order to predict the values of grinding forces and temperature. The experimental results show that an increase of workpiece infeed speed creates higher intensified cutting forces than the DOC. The grinding experiments under wet conditions present slightly lower tangential forces, force ratio, and specific energy than those in dry grinding. The simulation outcomes exhibit that the relative deviation of simulated and experimental forces is in the range of 1-15%. The increase in feed rate considerably reduces grinding temperature, while enhancement of DOC elevates the heat generation in the cutting zone.

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Section: Boundary Conditions and The Contacting Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study on the Grinding Performance of Ti-Based Super-Alloy

Phi

Hoang²,

Nguyen

et al. 2021

Int. j. eng. technol. innov.

View full text Add to dashboard Cite

show abstract

“…Khellouki et al 33 analyzed the contact conditions between abrasive and the surface and theoretically modeled the abrasive wear mechanisms. Zhao et al 34 conducted the single‐grain grinding tests of titanium alloy, and the wear characteristics of aggregated grains and the grinding force. Chen et al 35 characterized the coupling behavior of each wear mechanism by analyzing actual time‐variation of model parameters during wear evolution process.…”

Section: Introductionmentioning

confidence: 99%

A prediction model of residual stress for belt‐grinding blade based on geometrical characteristic and progressive wear of abrasive grains

Wang

Lai

et al. 2022

Numerical Meth Engineering

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The formation mechanism of residual stress on the machined surface of belt grinding is sophisticated, and residual stress is an important factor affecting the fatigue life of aero‐engine blades. In this study, a prediction model of residual stress in a belt grinding blade is proposed with the geometrical characteristics and progressive wear of the grains as the research topic. By extracting the morphological features of abrasive belt, the residual stress based on different geometrical characteristics of grains (pyramidal, hexahedral, spherical, and conical belts) were investigated, and the optimal grain geometry was determined to be a uniformly arranged positive quadrilateral cone. Accordingly, a grinding experiment with a pyramidal belt was conducted to obtain an experienced model of the grain wear height. A numerical simulation model of the grain wear evolution under four wear states (no abrasion, early abrasion, middle abrasion, and late abrasion) was developed. Additionally, more detailed progressive wear of the abrasive grains was also applied to grind the entire profile of the complex curved blade. The residual stress on the blade surface was mainly compressive, and the surface stress values were distributed between −385 and −117 MPa with the service life of the pyramidal abrasive belt.

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“…Titanium alloy has significant applications in the aerospace field due to its superior physical and mechanical properties [1][2][3], such as high strength, corrosion resistance, and high temperature resistance, etc. Grinding technology, as the main method of precision processing, has been widely utilized in the processing of titanium alloy aeronautical parts [4][5][6][7]. However, due to the special chemical, physical and mechanical properties of titanium alloy, it is easy to appear adhesion and debris defects in grinding, which lead to more grinding heat and serious tool wear.…”

Section: Introductionmentioning

confidence: 99%

EHTT2022 Grinding characteristics of MoS2-coated brazed CBN grinding wheels in dry grinding of titanium alloy

Zhao

Ding

et al. 2022

Preprint

Self Cite

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As an important green manufacturing process, dry grinding has problems such as high grinding temperature and insufficient cooling capacity. Aiming at the problems of sticking and burns in dry grinding of titanium alloys, grinding performance evaluation of molybdenum disulfide (MoS2) solid lubricant coated brazed cubic boron carbide (CBN) grinding wheel (MoS2-coated CBN wheel) in dry grinding titanium alloys was carried out. The lubrication mechanism of MoS2 in the grinding process is analyzed, and the MoS2-coated CBN wheel is prepared. The results show that the MoS2 solid lubricant can form a lubricating film on the ground surface and reduce the friction coefficient and grinding force. Within the experimental parameters, normal grinding force decreased by 42.5%, and tangential grinding force decreased by 28.1%. MoS2 lubricant can effectively improve the heat dissipation effect of titanium alloy grinding arc area. Compared with ordinary CBN grinding wheel, MoS2-coated CBN wheel has lower grinding temperature. When the grinding depth reaches 20 µm, the grinding temperature decreased by 30.5%. The wear of CBN grains of grinding wheel were analyzed by mathematical statistical method. MoS2 lubricating coating can essentially decrease the wear of grains, reduce the adhesion of titanium alloy chip, prolong the service life of grinding wheel, and help to enhance the surface quality of workpiece. This research provides high-quality and efficient technical support for titanium alloy grinding.

show abstract

Effect of grain wear on material removal behaviour during grinding of Ti-6Al-4V titanium alloy with single aggregated cBN grain

Cited by 34 publications

References 28 publications

Numerical and Experimental Study on the Grinding Performance of Ti-Based Super-Alloy

Numerical and Experimental Study on the Grinding Performance of Ti-Based Super-Alloy

A prediction model of residual stress for belt‐grinding blade based on geometrical characteristic and progressive wear of abrasive grains

EHTT2022 Grinding characteristics of MoS2-coated brazed CBN grinding wheels in dry grinding of titanium alloy

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