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

2014 ◽  
Vol 60 ◽  
pp. 328-333 ◽  
Author(s):  
J.B. Mao ◽  
F.L. Zhang ◽  
G.C. Liao ◽  
Y.M. Zhou ◽  
H.P. Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Cubic Boron Nitride ◽  
Grinding Wheels ◽  
Pore Former ◽  
Microstructure And Mechanical Properties ◽  
Vitrified Bond

Microstructure and Properties of Hot-Pressing Sintered Tungsten Carbide Composites by Adding Cubic Boron Nitride

2015 ◽  
Vol 655 ◽  
pp. 45-48
Author(s):  
Kun Li ◽  
Hai Yan Chen ◽  
Qiu Shuang He ◽  
Li Hua Dong
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Flexural Strength ◽  
Tungsten Carbide ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Cubic Boron Nitride ◽  
Microstructure And Mechanical Properties ◽  
Hot Pressing Sintering ◽  
Sintering Method

(0, 5, 10, 15, 20) vol% CBN-WC/Co composites were consolidated by ball milling and the following hot-pressing sintering method. WC, Co and CBN powders were used as the starting materials. The effects of the CBN content on the density, microstructure and mechanical properties of CBN-WC/Co composites were investigated. The results showed that the CBN content had remarkable influence on the microstructure and mechanical properties of CBN-WC/Co Composites. With the increasing content of CBN, the density decrease, while Vickers hardness and flexural strength increased initially to the maximum values and then decreased at CBN 10 vol%. When 10 vol% CBN-WC/Co powders were hot-pressing sintered at 1350°C and 20MPa for 90 min, an excellent Vickers hardness of 19.8GPa was achieved, combining a flexural strength of 682MPa.

A New CBN Crystal for Improved Grinding Performance in Vitrified Bonds

2008 ◽  
Vol 389-390 ◽  
pp. 211-216 ◽  
Author(s):  
Sridhar Kompella ◽  
Kai Zhang ◽  
Rajeev Pakalapati
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Cubic Boron Nitride ◽  
Grinding Performance ◽  
Wide Range ◽  
Inconel 718 Superalloy ◽  
Vitrified Bond ◽  
Crystal Synthesis ◽  
End Use ◽  
Cbn Crystal

The use of cubic boron nitride (CBN) over conventional abrasives in ferrous and superalloy grinding has resulted in improved manufacturing throughput and beneficial mechanical properties on workpiece surfaces. However, through the innovative use of crystal synthesis techniques, the grinding performance can be further improved over existing CBN crystals. In this study, such a new CBN crystal is developed, characterized, and its grinding performance is compared to a commercially available CBN crystal. Grinding tests are conducted in AISI M2 steel and Inconel-718 superalloy using a vitrified bond configuration with applicability in a wide range of end-use applications.

Microstructures and Mechanical Properties of β-Sialon-cBN Composites

2016 ◽  
Vol 697 ◽  
pp. 515-520
Author(s):  
Xin Ze Wu ◽  
Yi Wu ◽  
Jin Long Han ◽  
Tian Yu Shen
Keyword(s):  
Mechanical Properties ◽  
Computer Simulation ◽  
High Pressure ◽  
High Temperature ◽  
Boron Nitride ◽  
Oxygen Content ◽  
Cubic Boron Nitride ◽  
Test Results ◽  
Microstructure And Mechanical Properties ◽  
Z Value

β-Sialon-cubic boron nitride (cBN) composites were prepared by the high temperature (1700°C) and high pressure (5GPa) sintering. β-Sialon chemical general composition can be represented as Si6-zAlzOzN8 –z (Z is the number of Al atoms which are substituted by Si atoms, and the range of z value is usually between 0-4.2[1].).The effects of different formula with corresponding to z values on microstructure and mechanical properties of β-Sialon-cBN composites were studied. The relative test results were verified by computer simulation. The study result showed: with the z values of β-Sialon increasing, the aluminum and oxygen content increased. The densification and mechanical properties of β-Sialon-cBN composites decreased gradually.

Automation of calculations of cutting modes taking into account the wear of cubic boron nitride tools when applying solid lubricants

2021 ◽  
pp. 67-70
Author(s):  
Keyword(s):  
Boron Nitride ◽  
High Speed ◽  
Solid Lubricant ◽  
Cubic Boron Nitride ◽  
High Speed Steel ◽  
Solid Lubricants ◽  
Grinding Wheel ◽  
Grinding Wheels ◽  
Ceramic Bond ◽  
Calculation System

The effect of a solid lubricant on the wear of cubic boron nitride grinding wheels on a ceramic bond of different hardness and grain size in the processing of high-speed steel is investigated. The dependences of the change in the wear of cubic boron nitride on the parameters of the processing mode are determined. An automated calculation system is proposed to control the consumption of cubic boron nitride grinding wheels in production conditions. Keywords: solid lubricant, grinding, high speed steel, cubic boron nitride grinding wheel, consumption, wear, grinding mode. [email protected]

scholarly journals Mechanical properties of ultra-hard nanocrystalline cubic boron nitride

2019 ◽  
Vol 126 (7) ◽  
pp. 075107 ◽  
Author(s):  
Vladimir L. Solozhenko ◽  
Volodymyr Bushlya ◽  
Jinming Zhou
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Cubic Boron Nitride
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