Modelling and grinding characteristics of unidirectional C–SiCs

Qu, Shuoshuo; Yao, Peng; Gong, Yadong; Yang, Yuying; Chu, Dongkai; Zhu, Qing–Ling

doi:10.1016/j.ceramint.2021.12.036

Cited by 105 publications

(15 citation statements)

References 41 publications

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“…However, the MQL technology is still constrained by insufficient heat transfer capacity when it comes to aerospace material grinding. These difficult-to-machine materials are more likely to experience thermal damage in the high temperature grinding zone due to their characteristics of low thermal conductivity, high specific grinding energy and fracture toughness [32][33][34]. The grinding process of titanium alloy [35], superalloy [36,37], high-strength steel [38], composite material [39,40], and other difficult-tomachine materials [41,42] has the serious problems of heavy grinding force, high temperature, and severe wheel wear or clogging [43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy using biolubricant

Cui

Zhang

et al. 2022

Front. Mech. Eng.

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The substitution of biolubricant for mineral cutting fluids in aerospace material grinding is an inevitable development direction, under the requirements of the worldwide carbon emission strategy. However, serious tool wear and workpiece damage in difficult-to-machine material grinding challenges the availability of using biolubricants via minimum quantity lubrication. The primary cause for this condition is the unknown and complex influencing mechanisms of the biolubricant physicochemical properties on grindability. In this review, a comparative assessment of grindability is performed using titanium alloy, nickel-based alloy, and high-strength steel. Firstly, this work considers the physicochemical properties as the main factors, and the antifriction and heat dissipation behaviours of biolubricant in a high temperature and pressure interface are comprehensively analysed. Secondly, the comparative assessment of force, temperature, wheel wear and workpiece surface for titanium alloy, nickel-based alloy, and high-strength steel confirms that biolubricant is a potential replacement of traditional cutting fluids because of its improved lubrication and cooling performance. High-viscosity biolubricant and nano-enhancers with high thermal conductivity are recommended for titanium alloy to solve the burn puzzle of the workpiece. Biolubricant with high viscosity and high fatty acid saturation characteristics should be used to overcome the bottleneck of wheel wear and nickel-based alloy surface burn. The nano-enhancers with high hardness and spherical characteristics are better choices. Furthermore, a different option is available for high-strength steel grinding, which needs low-viscosity biolubricant to address the debris breaking difficulty and wheel clogging. Finally, the current challenges and potential methods are proposed to promote the application of biolubricant.

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Section: Introductionmentioning

confidence: 99%

Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy using biolubricant

Cui

Zhang

et al. 2022

Front. Mech. Eng.

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“…In addition, machining parameters play an important role in milling force, and single tooth feed rate is the most significant factor that affects milling force. At the same time, the progressive damage model predicts that the shear failure of materials is mainly concentrated in the shear region and extends along the feed direction [65].…”

Section: Tearmentioning

confidence: 99%

Fiber-reinforced composites in milling and grinding: machining bottlenecks and advanced strategies

et al. 2022

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Fiber-reinforced composites have become the preferred material in the fields of aviation and aerospace because of their high-strength performance in unit weight. The composite components are manufactured by near net-shape and only require finishing operations to achieve final dimensional and assembly tolerances. Milling and grinding arise as the preferred choices because of their precision processing. Nevertheless, given their laminated, anisotropic, and heterogeneous nature, these materials are considered difficult-to-machine. As undesirable results and challenging breakthroughs, the surface damage and integrity of these materials is a research hotspot with important engineering significance. This review summarizes an up-to-date progress of the damage formation mechanisms and suppression strategies in milling and grinding for the fiber-reinforced composites reported in the literature. First, the formation mechanisms of milling damage, including delamination, burr, and tear, are analyzed. Second, the grinding mechanisms, covering material removal mechanism, thermal mechanical behavior, surface integrity, and damage, are discussed. Third, suppression strategies are reviewed systematically from the aspects of advanced cutting tools and technologies, including ultrasonic vibration-assisted machining, cryogenic cooling, minimum quantity lubrication (MQL), and tool optimization design. Ultrasonic vibration shows the greatest advantage of restraining machining force, which can be reduced by approximately 60% compared with conventional machining. Cryogenic cooling is the most effective method to reduce temperature with a maximum reduction of approximately 60%. MQL shows its advantages in terms of reducing friction coefficient, force, temperature, and tool wear. Finally, research gaps and future exploration directions are prospected, giving researchers opportunity to deepen specific aspects and explore new area for achieving high precision surface machining of fiber-reinforced composites.

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“…Glass moulding Low cost, high repeatability High-temperature requirements [5,6] Reactive ion etching Good surface properties, high repeatability in the maskless process…”

Section: Advantages Disadvantages Referencesmentioning

confidence: 99%

“…Since the precision and quality of the machined surface will be directly reflected on the products, the structural mould still needs to be processed with ultra-precision machining technology to ensure that CMA has a high quality of the surface and precision. The ceramics (e.g., silicon carbide (SiC) and silicon nitride (SiN)) have excellent material properties, such as high wear resistance, great chemical stability, high thermal conductivity, high hardness, and high strength [5]. Increasingly, moulds are made of ceramics (such as SiC and SiN) rather than traditional metal materials.…”

Section: High Accuracy and Resolutionmentioning

confidence: 99%

“…However, the fabrication of a CMA with complex features brings huge challenges to optical applications. Various techniques for manufacturing CMAs [5][6][7][8][9][10][11][12][13][14][15][16][17][18] are still being developed. The manufacturing techniques can be categorized into nonmechanical and mechanical methods based on the properties of material removal.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Cylindrical Microlens Array on RB-SiC Moulds by Precision Grinding with MAWJ-Textured Diamond Wheels

Zhang

Yao

et al. 2022

Applied Sciences

Self Cite

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Cylindrical microlens array (CMA) is applied widely in imaging, sensing, and laser machining fields. Among the many techniques for machining CMA, moulding is considered a mass-production method with low-cost and good accuracy. Aimed at the present problems in the machining of CMA moulds, which include low processing efficiency and the prediction of the surface topography, this paper focused on the fabrication of CMA on RB-SiC moulds by precision grinding with micro-abrasive water jet (MAWJ) textured diamond wheels. The combined rough–fine grinding strategy for ceramic mould materials was proposed. The grinding experiments of CMA were carried out. The ultra-precision grinding method was optimized to obtain high shape accuracy and a high-quality surface of RB-SiC moulds. It was found that by using MAWJ-textured diamond wheels, the profile error in the peak-to-valley value (PV) of the CMA moulds can be further reduced to 6.7 μm by using the combined rough–fine strategy grinding process.

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Modelling and grinding characteristics of unidirectional C–SiCs

Cited by 105 publications

References 41 publications

Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy using biolubricant

Comparative assessment of force, temperature, and wheel wear in sustainable grinding aerospace alloy using biolubricant

Fiber-reinforced composites in milling and grinding: machining bottlenecks and advanced strategies

Fabrication of Cylindrical Microlens Array on RB-SiC Moulds by Precision Grinding with MAWJ-Textured Diamond Wheels

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