Precision grinding of engineering ceramic based on the electrolytic dressing of a multi-layer brazed diamond wheel

Wu, Qing; Ouyang, Zhen; Wang, Yu; Yang, Hui; Song, Kun

doi:10.1016/j.diamond.2019.107552

Cited by 23 publications

(5 citation statements)

References 16 publications

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“…The fabrication process of a multi‐layer brazed coarse‐grained diamond wheel is described as follow 24 : First, the diamond grit and Cu‐Sn‐Ti alloy powder are mixed with glycerin as a forming agent for 1 hour using a three‐dimensional movement mixer at 180 rpm (SHY‐1500; Yineng Co. Ltd). The size of the diamond grit varied from 90 to 109 μm, which was produced by Shili Co. Ltd. And a gas‐atomized Cu‐10Sn‐5Ti powder with a fine particle size range of 5‐8 μm was used in this work, which was provided by Central South University, China.…”

Section: Methodsmentioning

confidence: 99%

Electrolytic in‐process dressing grinding performance of a multi‐layer brazed coarse‐grained diamond wheel using an electrolyte containing carbon microspheres

Song

Ouyang

et al. 2020

Int J Applied Ceramic Tech

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An electrolyte containing carbon microspheres (CMSs) was prepared for electrolytic dressing of a multi‐layer brazed coarse‐grained diamond wheel. And the influence of CMSs on the electrolytic in‐process dressing grinding performance of Si3N4 ceramics with the brazed wheel was investigated. The results indicate that the CMSs can increase the electrolytic capacity of the electrolyte, which increases the thickness of the oxide film formed on the brazed wheel surface, and the worn diamond grit can easily fall off from the bonding matrix. In addition, the CMSs were adsorbed and distributed on the film, which effectively improves its densification and adhesion strength. This thicker and denser oxide film can improve the polishing effect of the brazed wheel. Thus, a better machined surface quality and less subsurface damage of the Si3N4 ceramics can be obtained by the multi‐layer brazed coarse‐grained diamond wheel with electrolyte containing CMSs.

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Section: Methodsmentioning

confidence: 99%

Electrolytic in‐process dressing grinding performance of a multi‐layer brazed coarse‐grained diamond wheel using an electrolyte containing carbon microspheres

Song

Ouyang

et al. 2020

Int J Applied Ceramic Tech

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“…Cr, Ti, V, etc.) to filler alloy on account of the interfacial metallurgical reaction between active elements and diamond (Liu et al , 2020; Duan et al , 2015; Wu et al , 2019). Currently, Ni-based filler alloys with active element Cr, with outstanding interfacial bonding strength, good wettability, high hardness and excellent wear resistance, have been widely applied in the field of brazed diamond tools (Lu et al , 2018; Duan et al , 2015; Mukhopadhyay et al , 2017; Xiao et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

Interfacial behavior and mechanism of brazed diamond with CeO₂-added Ni-Cr filler alloy: a combined first-principles and experimental study

Zhang

et al. 2023

SSMT

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Purpose This paper aims to investigate the effect and mechanism of O atom single doping, Ce and O atoms co-doping on the interfacial microscopic behavior of brazed Ni-Cr/diamond. Design/methodology/approach Using first-principles calculations, the embedding energy, work of separation, interfacial energy and electronic structures of Ni-Cr-O/diamond and Ni-Cr-O-Ce/diamond interface models were calculated. Then, the effect of Ce and O co-doping was experimentally verified through brazed diamond with CeO2-added Ni-Cr filler alloy. Findings The results show that O single-doping reduces the interfacial bonding strength between Ni-Cr filler alloy and diamond but enhances its interfacial stability to some extent. However, the Ce and O co-doping simultaneously enhances the interfacial bonding strength and stability between Ni-Cr filler alloy and diamond. The in-situ formed Ce-O oxide at interface impedes the direct contact between diamond and Ni-Cr filler alloy, which weakens the catalytic effect of Ni element on diamond graphitization. It is experimentally found that the fine rod-shaped Cr3C2 and Cr7C3 carbides are generated on diamond surface brazed with CeO2-added Ni-Cr filler alloy. After grinding, the brazed diamond grits, brazed with CeO2-added Ni-Cr filler alloy, present few fracture and the percentage of intact diamond reaches 67.8%. Compared to pure Ni-Cr filler alloy, the brazed diamond with CeO2-added Ni-Cr filler alloy exhibit the better wear resistance and the slighter thermal damage. Originality/value Using first-principles calculations, the effect of Ce and O atoms co-doping on the brazed diamond with Ni-Cr filler alloy is investigated, and the calculation results are verified experimentally. Through the first-principles calculations, the interface behavior and reaction mechanism between diamond and filler alloy can be well disclosed, and the composition of filler alloy can be optimized, which will be beneficial for synergistically realizing the enhanced interface bonding and reduced thermal damage of brazed diamond.

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“…Brazed abrasive tool has attracted the increasing attentions in the eld of aerospace industry owing to its extraordinary properties such as the high bonding strength, large chip holding space and good selfsharpening ability [1][2][3]. Therefore, the brazed abrasive tool has broad application in grinding of ductile material [4,5], and the hard-brittle materials [6,7]. However, there are still some problems with induction brazed abrasive tools.…”

Section: Introductionmentioning

confidence: 99%

Structure design and experimental study on ultrasonic vibration–assisted induction brazing cubic boron nitride abrasive tools

Cai

Zhao

et al. 2022

Int J Adv Manuf Technol

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Brazed abrasive tool has been widely used in high-precision machining of di cult-to-cut materials to improve the machining e ciency and quality. However, the severe wear and associated short service life during machining processes have to be faced for conventional induction brazed (CIB) abrasive tools owing to its weak bonding strength between abrasive grains and metal-bonded materials. In this case, a novel ultrasonic vibration-assisted induction brazing (UVAIB) device was developed to improve the abrasive bonding strength. Here, the frequency equation of the UVAIB device was derived using recursive methods, and then the geometric designation parameters were optimized with the nite element simulating method. In addition, the performance of UVAIB device was tested in terms of the impedance and amplitude. Subsequently, the comparative experiment trials were performed with the brazed abrasive tools under the CIB and UVAIB method. Results show that the ultrasonic energy loss of UVAIB device could be reduced, and then the ampli cation value and vibration uniformity could reach 8 and 92%, respectively. In addition, for CIB, there are a large number of pores and macro-cracks on the joints. However, the internal pores inside the metallic matrix of UVAIB were reduced, and only fewer and smaller micro-cracks could be found. Furthermore, the intergranular fracture of abrasive grains could be observed for CIB abrasive tools owing to the weak bonding interface caused by the existence of numerous micropores, whereas the grain transgranular fracture appeared once adopting the ultrasonic vibrating method.

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Precision grinding of engineering ceramic based on the electrolytic dressing of a multi-layer brazed diamond wheel

Cited by 23 publications

References 16 publications

Electrolytic in‐process dressing grinding performance of a multi‐layer brazed coarse‐grained diamond wheel using an electrolyte containing carbon microspheres

Electrolytic in‐process dressing grinding performance of a multi‐layer brazed coarse‐grained diamond wheel using an electrolyte containing carbon microspheres

Interfacial behavior and mechanism of brazed diamond with CeO₂-added Ni-Cr filler alloy: a combined first-principles and experimental study

Structure design and experimental study on ultrasonic vibration–assisted induction brazing cubic boron nitride abrasive tools

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Precision grinding of engineering ceramic based on the electrolytic dressing of a multi-layer brazed diamond wheel

Cited by 23 publications

References 16 publications

Electrolytic in‐process dressing grinding performance of a multi‐layer brazed coarse‐grained diamond wheel using an electrolyte containing carbon microspheres

Electrolytic in‐process dressing grinding performance of a multi‐layer brazed coarse‐grained diamond wheel using an electrolyte containing carbon microspheres

Interfacial behavior and mechanism of brazed diamond with CeO2-added Ni-Cr filler alloy: a combined first-principles and experimental study

Structure design and experimental study on ultrasonic vibration–assisted induction brazing cubic boron nitride abrasive tools

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Interfacial behavior and mechanism of brazed diamond with CeO₂-added Ni-Cr filler alloy: a combined first-principles and experimental study