Current Advances in the Development of Abrasive Tools and Investigation of Diamond Abrasive Machining Processes (Materials Science Approach). Review

Lavrinenko, V. I.

doi:10.3103/s1063457618050064

Cited by 11 publications

(4 citation statements)

References 7 publications

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“…All tested samples were characterized by a higher sample abrasion and lower MRR than the reference sample. This cannot be considered a disadvantage, because it is common practice to use softer grinding tools to machine hard materials and high-performance metal alloys [ 38 , 39 , 40 ]. The use of cresol-based benzoxazine as a binder can modify and adjust the properties of the abrasive tool to the specific properties of the machined material.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Low-Cost Cresol-Based Benzoxazine Resins as Potential Binders in Abrasive Composites

et al. 2020

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A series of cresol-based benzoxazines were synthesized for potential application as a polymer matrix in abrasive composites. The chemical structures of the obtained benzoxazine resins were investigated in detail using Fourier transform infrared spectroscopy (FTIR) and hydrogen-1 as well as carbon-13 nuclear magnetic resonance spectroscopy (1H NMR, 13C NMR) with an additional analysis using two-dimensional NMR techniques (2D NMR 1H-1H COSY, 1H-13C gHSQC and gHMBC). Structural analysis confirmed the presence of vibrations of -O-C-N- at ~950 cm−1 wavenumber, characteristic for an oxazine ring. The thermal properties of benzoxazine monomers were examined using differential scanning calorimetry (DSC) analysis. The polymerization enthalpy varied from 143.2 J/g to 287.8 J/g. Thermal stability of cresol-based benzoxazines was determined using thermogravimetry (TGA) analysis with additional analysis of the amount of volatile organic compounds (VOC) emitted from the synthesized benzoxazines during their crosslinking by static headspace coupled with gas chromatography technique (HS-GC). The amount of residual mass significantly differed between all synthesized polybenzoxazines in the range from 8.4% to 21.2%. The total VOC emission for benzoxazines decreased by 46–77% in reference to a conventional phenolic binder. The efficiency of abrasive composites with the benzoxazine matrix was evaluated based on abrasion tests. Performed analyses confirmed successful synthesis and proper chemical structure of cresol-based benzoxazines. All the experiments indicated that benzoxazines based on different cresol isomers significantly differ from each other. Good thermal performance and stability of the abrasive composites with the polybenzoxazine matrix and significantly lower VOC emission allow us to state that benzoxazines can be a promising and valuable alternative to the phenolics and a new path for the development of modern, eco-friendly abrasives.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Low-Cost Cresol-Based Benzoxazine Resins as Potential Binders in Abrasive Composites

et al. 2020

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“…With the improvement in characterization methods, the (in situ) transmission electron microscopy (TEM) has helped us to bridge the microstructures of materials with their physical properties and to dynamically reveal the microstructure evolution under distinct external stimuli like force, heat, electricity, 63–88 and so forth. With the help of this technique, detailed microstructures, solid experimental evidence on dynamic structural evolutions, and novel structure‐related physical properties have been elucidated.…”

Section: Introductionmentioning

confidence: 99%

Rational design of diamond through microstructure engineering: From synthesis to applications

Ku,

Huang,

et al. 2024

Carbon Energy

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Diamond possesses excellent thermal conductivity and tunable bandgap. Currently, the high‐pressure, high‐temperature, and chemical vapor deposition methods are the most promising strategies for the commercial‐scale production of synthetic diamond. Although diamond has been extensively employed in jewelry and cutting/grinding tasks, the realization of its high‐end applications through microstructure engineering has long been sought. Herein, we discuss the microstructures encountered in diamond and further concentrate on cutting‐edge investigations utilizing electron microscopy techniques to illuminate the transition mechanism between graphite and diamond during the synthesis and device constructions. The impacts of distinct microstructures on the electrical applications of diamond, especially the photoelectrical, electrical, and thermal properties, are elaborated. The recently reported elastic and plastic deformations revealed through in situ microscopy techniques are also summarized. Finally, the limitations, perspectives, and corresponding solutions are proposed.

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“…Diamond grit has been widely used in machining tools owing to its outstanding hardness, sharpness, and thermal conductivity performance [1]. Generally, the diamond grits are mechanically mixed with metal powders for fabricating diamond tools.…”

Section: Introductionmentioning

confidence: 99%

Blade Segment with a 3D Lattice of Diamond Grits Fabricated via an Additive Manufacturing Process

Chen

Huang

et al. 2020

Chin. J. Mech. Eng.

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Diamond tools with orderly arrangements of diamond grits have drawn considerable attention in the machining field owing to their outstanding advantages of high sharpness and long service life. This diamond super tool, as well as the manufacturing equipment, has been unavailable to Chinese enterprises for a long time due to patents. In this paper, a diamond blade segment with a 3D lattice of diamond grits was additively manufactured using a new type of cold pressing equipment (AME100). The equipment, designed with a rotary working platform and 16 molding stations, can be used to additively manufacture segments with diamond grits arranged in an orderly fashion, layer by layer; under this additive manufacturing process, at least 216000 pcs of diamond green segments with five orderly arranged grit layers can be produced per month. The microstructure of the segment was observed via SEM and the diamond blade fabricated using these segments was compared to other commercial cutting tools. The experimental results showed that the 3D lattice of diamond grits was formed in the green segment. The filling rate of diamond grits in the lattice could be guaranteed to be above 95%; this is much higher than the 90% filling rate of the automatic array system (ARIX). When used to cut stone, the cutting amount of the blade with segments made by AME100 is two times that of ordinary tools, with the same diamond concentration. When used to dry cut reinforced concrete, its cutting speed is 10% faster than that of ARIX. Under wet cutting conditions, its service life is twice that of ARIX. By applying the machine vision online inspection system and a special needle jig with a negative pressure system, this study developed a piece of additive manufacturing equipment for efficiently fabricating blade segments with a 3D lattice of diamond grits.

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Current Advances in the Development of Abrasive Tools and Investigation of Diamond Abrasive Machining Processes (Materials Science Approach). Review

Cited by 11 publications

References 7 publications

Synthesis and Characterization of Low-Cost Cresol-Based Benzoxazine Resins as Potential Binders in Abrasive Composites

Synthesis and Characterization of Low-Cost Cresol-Based Benzoxazine Resins as Potential Binders in Abrasive Composites

Rational design of diamond through microstructure engineering: From synthesis to applications

Blade Segment with a 3D Lattice of Diamond Grits Fabricated via an Additive Manufacturing Process

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