Results 91 to 100 of about 182 (129)
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Reconstruction and Analysis of Wear Topography of PcBN Abrasive Grain
Key Engineering Materials, 2013This paper mainly deals with the reconstruction and fractal analysis of wear topography of brazed polycrystalline cubic boron nitride (PcBN) grain in grinding process. On the basis of fractal analysis, the uncertainty in shape and complexity in wear mechanism are analyzed by means of the construction of micro fracture of PcBN grain after producing the ...
Qing Miao +4 more
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Microstructure and Mechanical Properties of High Density PCBN Aggregates
Key Engineering Materials, 2008Polycrystalline cubic boron nitride (PCBN) is formed by sintering cubic boron nitride particles (cBN) at high temperature and high pressure. In this process, a network of cBN particles is formed by intergrowth and bridging between the particle phases.
X.J. Ren, Ming Zhi Wang
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New Pcbn for Heavy Interrupted Cutting of Hardened Steel
Materials Science Forum, 2007PCBN tools are used worldwide for machining of hardened steel parts in automotive industries. Because cutting by PCBN tools has many advantages, which are high-precision, highefficiency, high-flexibility and low total machining cost, compared with conventional grinding methods. But in heavy interrupted cutting of hardened steel, the tool life is not so
Katsumi Okamura +2 more
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Mechanical Properties of the PcBN-Alcomposites are Improved by Pressure Infiltration
Advanced Materials Research, 2015PcBN–Al composites（PAC）have been synthesized by pressure infiltration(PI) and a general mixing method(GM)[1-3] with a wide grain sizes range of 4-25 um and a wide temperature range of 1200-1600°C at 5.0 GPa,respectively.Hardness ranged between 30and 40 GPa, while the flank wear (Vb) reached 0.12mm when it finished 4000m in cutting test ofPAC ...
Wen Rui Duan +5 more
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2018
It is developed new PCBN ??? a two-layer composite of cubic boron nitride with a substrate of cemented carbide. Properties of a working layer a composite ??? high hardness, fracture strength and an electrical conductivity in a combination to necessary geometry sintered in HPA preparations, have provided manufacturing of complex contour profile the tool.
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It is developed new PCBN ??? a two-layer composite of cubic boron nitride with a substrate of cemented carbide. Properties of a working layer a composite ??? high hardness, fracture strength and an electrical conductivity in a combination to necessary geometry sintered in HPA preparations, have provided manufacturing of complex contour profile the tool.
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2018
???????????????????? ???????? ????????????-?????????????????? ?????????????????????? ???????????????????????? ?????????????????? ?????????????? ????????, ???????????????????? ?? ?????????????? cBN, ?????????????????????????? ?? ?????????????????? ???????????????????????? hBN: ?????????????????? HV ?????? ???????????????????????? ???? ???????????????? 2?
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???????????????????? ???????? ????????????-?????????????????? ?????????????????????? ???????????????????????? ?????????????????? ?????????????? ????????, ???????????????????? ?? ?????????????? cBN, ?????????????????????????? ?? ?????????????????? ???????????????????????? hBN: ?????????????????? HV ?????? ???????????????????????? ???? ???????????????? 2?
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Micromechanical characterization of coated PCBN inserts
2020Polycrystalline cubic boron nitride (Pc-BN) is a super-hard material with a multiphase composite character. Indeed, it is a composite material composed of c-BN particles (as reinforcement) embedded in a binder (ceramic or metallic), mainly used as a cutting tool material.
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Reducing Fracture Tendencies in PCBN FSW Tools
2009Abstract : The overall goal of this program is to increase the life of PCBN tools in friction-stir welding of high temperature metals. This will be achieved through the following objectives: (1) Understand the fundamental causes for limited lifetimes of PCBN tools during Friction-Stir Welding (FSW) of high temperature metals, including both wear and ...
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Nanocomposite-Schichten auf PcBN-Werkzeugen *
wt Werkstattstechnik online, 2013E. Uhlmann, J. A. Oyanedel Fuentes
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Effect of Zr/Al binder ratio on properties of PCBN composites
International Journal of Refractory Metals and Hard Materials, 2023Peicheng Mo, Jiarong Chen
exaly