Characterization of low sintering temperature and high strength SiO2-B2O3-CaO vitrified bonds for diamond abrasive tools

He, Feng; Zhou, Qi; Xie, Jianliang; Zhang, Qiuping

doi:10.1016/j.ceramint.2014.10.150

Cited by 32 publications

(6 citation statements)

References 23 publications

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“…Diamond grinding wheels maintain mechanical properties through the combination of binding agents. Vitri ed bonds diamond grinding wheels with excellent properties are widely used for grinding and machining materials [1][2][3], such as high strength, high elastic modulus, low fracture toughness, self-dressing, shape-retaining ability, high accuracy and low cost. These make high demands of diamond abrasive tools from high e ciency grinding to high precision grinding nowadays [4,5].…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Effect of Li2O on Structure and Properties of Glass-Ceramic Bonds

Guo

et al. 2020

Preprint

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SiO2-B2O3-Al2O3-CaO vitrified bonds are widely used in the diamond abrasive tools preparation. The effect of Li2O on structure and properties of the glass-ceramic bonds was investigated. The structure of the glass-ceramic bonds was analyzed by XRD and FTIR. The bending strength, the sintering properties of different glass-ceramic bonds and the thermal expansion coefficient were tested at meantime. The sintering and interfacial bonding state between L-4 glass-ceramic bonds and diamond grains were observed by SEM. The results showed that with the increasing of Li2O, the sintering temperature of the glass-ceramic bonds was impactful reducing. When the content of Li2O was 4 wt%, the sintering temperature corresponding to the optimal bending strength was 630 °C, which had a certain reduction compared with other studies. The main crystal phase precipitated in the glass-ceramic bonds was LixAlxSi3−xO6. With the increase of Li2O, the number of crystals in the glass-ceramic bonds gradually increased. The highest bending strength could attain about 136 MPa. Meanwhile, the bending strength performed regular change as the rising of temperature accompanied by the linear shrinkage rate. The L-4 glass-ceramic bonds and diamond grains were found to have very good wetting property and the interfacial bonding strength was insured enhance. The average bending strength of the composite sinter of the glass-ceramic bonds and diamond was up to 87.8 MPa.

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Effect of Li2O on Structure and Properties of Glass-Ceramic Bonds

Guo

et al. 2020

Preprint

Self Cite

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“…Diamond is a key raw material for the preparation of high-quality abrasives with its high hardness, good wear resistance, long service life and excellent thermal conductivity [1]. Abrasive machine is mainly composed of abrasive particles, binder and pores three parts, therefor the abrasive particles, binder and pores can also be called three elements of abrasive tool [2]. The main components of the grinding tools used in ultrasonic grinding are diamond particles, and the binders are mainly bronze, ceramic and iron [3].…”

Section: Introductionmentioning

confidence: 99%

Study on wear simulation of diamond abrasive tool for rotary ultrasonic grinding

Wei

Zhang

et al. 2023

Int J Adv Manuf Technol

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To explore the wear mechanism of diamond grinding tools in rotary ultrasonic grinding process and complete the simulation study of micro wear state of diamond grinding tools in different processing stages. Primarily, the morphology of single diamond abrasive grains is analyzed and studied, and a threedimensional irregular abrasive grain simulation is carried out according to the morphology characteristics of diamond abrasive grains. Then, the center distance and spatial distribution law between diamond grits are obtained by calculation, and the discrete three-dimensional morphology simulation of diamond abrasive end face is completed based on the virtual lattice theory. Through the rotary ultrasonic grinding experiment, the wear form of diamond grits and the mathematical model of the wear amount of diamond grits changing with the removal amount of workpiece material are determined. The wear simulation of diamond abrasive tool with different workpiece removal is completed by using the mathematical model obtained from experiments. Last section, the number of abrasive particles in the simulation model and the wear amount of the abrasive tool are compared and analyzed with the corresponding experimental results. The above research provides a new research method for exploring the wear mechanism of diamond abrasive tools.

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“…These vitrified bond systems have advantages, such as low melting point, high strength and good fluidity, to bind the super hard abrasives such as CBN and diamond. To further improve the physical properties of the vitrified bond, metal oxides have been added to the commonly used systems for modification [ 14 , 15 , 16 , 17 ]. An important role of the added phases is to induce precipitation in the matrix, thus obtaining a new phase with properties, such as high flexural strength [ 6 , 7 , 18 ] and low coefficient of thermal expansion (CTE) [ 19 ], which are not present in the matrix.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ti Containing Cu-Based Alloy on Sintering Mechanism, Element Diffusion Behavior and Physical Properties of Glass-Ceramic Bond for Cubic Boron Nitride Abrasive Tool Materials

Meng

Xiao

2023

Micromachines

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Ti containing Cu-based (TC) alloy reinforced glass-ceramic bond was fabricated for cubic boron nitride (CBN) abrasive tool materials, and its crystal composition, phase transformation, sintering activation energy, microstructure, element diffusion mathematical model, physical properties, and the bonding mechanism between the TC alloy reinforced glass-ceramic bond and the CBN grains were systematically investigated. The results showed that the structure, composition and sintering behavior of glass-ceramic were influenced by TC alloy adding. The generated TiO2 affected obviously the precipitation of β-quartz solid solution Li2Al2Si3O10, thus improving the relative crystallinity, mechanical strength and thermal properties. By establishing the mathematical model for element diffusion, the element diffusion coefficients of Ti and Cu were 7.82 and 6.98 × 10−11 cm2/s, respectively, which indicated that Ti diffused better than Cu in glass-ceramic. Thus, Ti4+ formed a strong Ti–N chemical bond on the CBN surface, which contributed to improving the wettability and bonding strength between CBN and glass-ceramic bond. After adding TC alloy, the physical properties of the composite were optimized. The porosity, bulk density, flexural strength, Rockwell hardness, CTE, and thermal conductivity of the composites were 5.8%, 3.16 g/cm3, 175 MPa, 90.5 HRC, 3.74 × 10−6 °C−1, and 5.84 W/(m·k), respectively.

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Characterization of low sintering temperature and high strength SiO2-B2O3-CaO vitrified bonds for diamond abrasive tools

Cited by 32 publications

References 23 publications

WITHDRAWN: Effect of Li2O on Structure and Properties of Glass-Ceramic Bonds

WITHDRAWN: Effect of Li2O on Structure and Properties of Glass-Ceramic Bonds

Study on wear simulation of diamond abrasive tool for rotary ultrasonic grinding

Effects of Ti Containing Cu-Based Alloy on Sintering Mechanism, Element Diffusion Behavior and Physical Properties of Glass-Ceramic Bond for Cubic Boron Nitride Abrasive Tool Materials

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