A review of the techniques for the mold manufacturing of micro/nanostructures for precision glass molding

Zhou, Tianfeng; He, Yupeng; Wang, Tianxing; Zhu, Zhanchen; Xu, Ruzhen; Yu, Qian; Zhao, Bin; Zhao, Wenxiang; Liu, Peng; Wang, Xibin

doi:10.1088/2631-7990/ac1159

Cited by 55 publications

(25 citation statements)

References 178 publications

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“…(3) For the edge effect of STP, a guide block was introduced in the fixture to satisfy the uniformity requirement. After 90 minutes of the STP process, the average surface roughness Ra decreased from 310 nm to 11.16 nm, and the roughness variance was found under 0.58 nm 2 .…”

Section: Discussionmentioning

confidence: 95%

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Shear-thickening polishing of inner raceway surface of bearing and suppression of edge effect

Guo

Wang

Lyu

et al. 2022

Int J Adv Manuf Technol

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Shear-thickening polishing is a non-traditional finishing method that uses the shear thickening effect by impacting the non-Newtonian fluid over the machining surface. As a result, it forms a velocity gradient that increases viscosity sharply, producing a flexible fixed abrasive tool to remove the material. Shear-thickening polishing is applied for finishing the outer surface of the rotary workpiece in previous work. The material removal distribution on the inner surface is completely different from those on the outer surface due to the different structure. The thickened slurry tends to form a relatively dense boundary layer on the surface, resulting in a decrease in the polishing quality and efficiency. The present study investigates the effect of impact angle of slurry and polishing velocity on polishing quality to obtain the uniform surface morphology of the ring's inner surface by the shear-thickening polishing process. The inner raceway of the outer ring of the tapered roller bearing 30203 was taken as the machining object. The numerical material removal model of raceway surface was built according to the rheological performance of shear-thickening slurry. A mathematical geometric model is used to explore the real impact angle of slurry. The model was able to accurately predict the experimental conditions, and the results of the simulation were in good agreement with the model's predictions. In the fixture, a guide block was introduced to guide the flow of the slurry, ensuring consistent material removal across the whole surface. The optimal experimental results show that the average surface roughness measured by Ra reduces from 300 nm to 42.9 nm in 30 minutes, which further drops to 11.16 nm in 90 minutes with a variance of 0.58 nm 2 . The conclusion could be drawn from the studies of this paper that uniform inner raceway surface of bearing is achievable through properly designed STP process.

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Section: Discussionmentioning

confidence: 95%

“…Surface quality requirements of key parts are becoming more and more stringent as industrial equipment develops, especially for work surfaces that influence part performance [1][2][3][4]. Being a core component of industrial equipment, bearing requires high integrity of surface morphology on raceway [5,6].…”

Section: Introductionmentioning

confidence: 99%

Shear-thickening polishing of inner raceway surface of bearing and suppression of edge effect

Guo

Wang

Lyu

et al. 2022

Int J Adv Manuf Technol

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“…Surface microstructures, including microgroove array, micropillar array, microlens array, and surface micropatterning [116,117], have the advantages of reducing resistance, improving lubrication and superhydrophobicity, and improving the physical properties of the material surface. Fabricating microstructures on the surface of stents can improve blood compatibility and blood fluidity after implantation and inhibit the adhesion of macromolecules in the blood.…”

Section: Microstructuresmentioning

confidence: 99%

A Review on Manufacturing and Post-Processing Technology of Vascular Stents

et al. 2022

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Percutaneous coronary intervention (PCI) with stent implantation is one of the most effective treatments for cardiovascular diseases (CVDs). However, there are still many complications after stent implantation. As a medical device with a complex structure and small size, the manufacture and post-processing technology greatly impact the mechanical and medical performances of stents. In this paper, the development history, material, manufacturing method, and post-processing technology of vascular stents are introduced. In particular, this paper focuses on the existing manufacturing technology and post-processing technology of vascular stents and the impact of these technologies on stent performance is described and discussed. Moreover, the future development of vascular stent manufacturing technology will be prospected and proposed.

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“…As a result, researchers are looking for alternative materials and methods for a mass-produced infrared lens that is both cost-effective and able to meet the demands of various industrial applications. To reduce the high costs often associated with producing infrared optics through traditional methods, researchers are currently exploring the use of chalcogenide glasses for molded infrared optics [ 4 , 5 , 6 , 7 ]. These glasses can be mass-produced at a lower cost than crystalline materials through the precision glass molding (PGM) process, making them a potentially attractive option for various industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Transferability of Diffractive Structure in the Compression Molding of Chalcogenide Glass

et al. 2023

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This study investigates the use of Ge28Sb12Se60 chalcogenide glass for the compression molding of an infrared optical lens with a diffractive structure. Firstly, a mold core was prepared through ultra-precision grinding of tungsten carbide, and a chalcogenide glass preform was crafted through a polishing process and designed with a radius that would prevent gas isolation during the molding process. The test lens was then molded at various temperature conditions using the prepared mold core and preform. The diffractive structures of both the mold core and the resulting molded lens were analyzed using a microscope and white light interferometer. The comparison of these diffractive structures revealed that the molding temperature had an effect on the transferability of the diffractive structure during the molding of the chalcogenide glass lens. Furthermore, it was determined that, when the molding temperature was properly adjusted, the diffractive structure of the core could be fully transferred to the surface of the chalcogenide lens. Optimized chalcogenide glass-based lenses have the potential to serve as cost-effective yet high-performance IR optics.

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A review of the techniques for the mold manufacturing of micro/nanostructures for precision glass molding

Cited by 55 publications

References 178 publications

Shear-thickening polishing of inner raceway surface of bearing and suppression of edge effect

Shear-thickening polishing of inner raceway surface of bearing and suppression of edge effect

A Review on Manufacturing and Post-Processing Technology of Vascular Stents

Transferability of Diffractive Structure in the Compression Molding of Chalcogenide Glass

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