Effect of granulated sugar as pore former on the microstructure and mechanical properties of the vitrified bond cubic boron nitride grinding wheels

Mao, Jianqin; Zhang, F.L.; Liao, Gang; Zhou, Yan; Huang, Huiping; Wang, C.Y.; Wu, Siyu

doi:10.1016/j.matdes.2014.04.006

Cited by 27 publications

(3 citation statements)

References 30 publications

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“…It is noted that in the porous metal-bonded CBN wheel, the inner diameter and the outer diameter of alumina bubble particles is about 550 and 600 µm, respectively. They are quite different from the reported pore diameter of the vitrified CBN wheels, for example, ranged from 160 to 500 µm 20 or from 15 to 60 µm. 21 The row interval of CBN grains is approximately 2.0 mm.…”

Section: Experimental Materials and Procedurescontrasting

confidence: 80%

Grinding temperature and wheel wear of porous metal-bonded cubic boron nitride superabrasive wheels in high-efficiency deep grinding

Ding

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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High-efficiency deep grinding experiments of Inconel 718 nickel-based superalloy was carried out with the porous metal-bonded cubic boron nitride superabrasive wheel, in which the uniform and large pores were formed by the broken alumina bubble particles in the working layer after wheel dressing. Grinding temperature, energy partitioning into workpiece, and wheel wear were investigated. Results obtained show that long maintenance of low grinding temperature, that is, 50 °C–170 °C, is obtained in high-efficiency deep grinding with the porous metal-bonded cubic boron nitride wheel. The energy partitioning into the ground workpiece is ranged from 2% to 6%, which is smaller than that with the conventional vitrified cubic boron nitride wheels and alumina abrasive wheels. Sufficient storage space for chips and coolants contributes to the excellent performance of the porous metal-bonded cubic boron nitride wheel in high-efficiency deep grinding. Abrasion wear and grain fracture are the dominant wear patterns of the porous cubic boron nitride wheel in the steady wear stage, while chips loading and grain pullout play a critical role in the final dramatic wear behavior of the porous wheel.

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Section: Experimental Materials and Procedurescontrasting

confidence: 80%

Grinding temperature and wheel wear of porous metal-bonded cubic boron nitride superabrasive wheels in high-efficiency deep grinding

Ding

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…If the pore former is used, the number, morphology and distribution of pores in the vitrified bond wheel are controlled by varying the amount and size of the added pore former and the way it is added [ 18 ]. Different pore formers have been reported by different researchers, such as polymethyl methacrylate (PMMA) [ 19 ], aluminum powder [ 20 ], dextrin [ 21 ], granulated sugar [ 22 ] and graphite [ 23 ]. In this paper, dextrin was chosen as the pore former due to its low ash content and its ability to reduce the contamination of ceramic materials by alkali and trace element ions.…”

Section: Introductionmentioning

confidence: 99%

Study on Preparation and Grinding Performance of Vitrified Bond CBN Grinding Wheel with Controllable Porosity

Zhou

et al. 2022

Micromachines

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Vitrified bond cubic boron nitride (CBN) grinding wheel specimens with controllable porosity were prepared by regulating the pore former dextrin content and varying the forming pressure, and the performance of the grinding camshaft was studied. The porosity of the specimens increases with the increase in dextrin content, and decreases first and then increases with the increase in the forming pressure. The grinding experiments show that the dextrin content is negatively correlated with the grinding force and grinding temperature, while the grinding force and grinding temperature of the specimens increase and then decrease with the increase in the forming pressure. When we observe and measure the grinding surface of the specimen and workpiece, we see that the surface roughness of the specimen after grinding is smaller than that before grinding. In addition, the greater the porosity of the specimen, the rougher the surface of the workpiece after grinding.

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“…В качестве порообразователя в связках алмазного инструмента могут быть использованы различные летучие материалы, нагрев которых при спекании сопровождается выделением большого объема газа. К таким добавкам относятся TiH 2 [9], полиметилметакрилат (ПММА) [10], гранулированный сахар [11] и т.д. Принципиально другой вид порообразователя -полые микросферы из различных соединений, химически и термически устойчивых в условиях компактирования алмазных сегментов.…”

Section: Introductionunclassified

Mechanical properties and wear resistance of Fe–Ni–Cu-based metal matrix composites reinforced with hollow corundum microspheres

Bychkova

Manakova

Akhmetov

et al. 2022

Izv. VUZ. Poroshk. Met.

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This paper focuses on the development of composite materials based on the Fe–Ni–Cu alloy with hollow corundum microspheres (HCM). The composites were produced by means of powder metallurgy: by mixing initial metallic powders in various types of mixers followed by hot pressing. Compact samples of Fe–Ni–Cu + HCM composites featured high relative density and microstructure homogeneity. The introduction of HCM leads to a decrease in strength to 30 % (from 1125 MPa to 800 MPa at a HCM concentration of 15 vol.%). However, resulting composite materials retained high plasticity. It was established by the micromechanical modeling method that such composites have stress concentration regions not at the interface between HCM and the matrix, but on the inner surface of microspheres. On the contrary, the adjacent matrix volume around HCM features stress relaxation and «unloaded» regions formed. HCM introduction into the matrix based on the Fe–Ni–Cu alloy increases wear resulting from friction on M300 concrete by 50–170 % with a grain size of 70–100 μm and by 160–325 % with a grain size of 100–140 μm. During friction, HCMs act as a reservoir for debris (concrete particles), so the matrix surface remains free of wear products and directly contacts the material processed. The heavy wear of composites with HCM makes them promising for use as a binder in diamond tools designed for the dry cutting of concrete and reinforced concrete.

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Effect of granulated sugar as pore former on the microstructure and mechanical properties of the vitrified bond cubic boron nitride grinding wheels

Cited by 27 publications

References 30 publications

Grinding temperature and wheel wear of porous metal-bonded cubic boron nitride superabrasive wheels in high-efficiency deep grinding

Grinding temperature and wheel wear of porous metal-bonded cubic boron nitride superabrasive wheels in high-efficiency deep grinding

Study on Preparation and Grinding Performance of Vitrified Bond CBN Grinding Wheel with Controllable Porosity

Mechanical properties and wear resistance of Fe–Ni–Cu-based metal matrix composites reinforced with hollow corundum microspheres

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