Wear Characteristics of Binder-Less Nano-Polycrystalline Diamond and Cubic Boron Nitride

2014 ◽  
Vol 1017 ◽  
pp. 406-410 ◽  
Author(s):  
Hitoshi Sumiya ◽  
Katsuko Harano
Keyword(s):  
Boron Nitride ◽  
Chemical Reaction ◽  
High Speed ◽  
Single Phase ◽  
Cubic Boron Nitride ◽  
Polycrystalline Diamond ◽  
Wear Characteristics ◽  
Wear Process ◽  
Wear Rates ◽  
Starting Condition

Wear characteristics of binder-less (single-phase) nanopolycrystalline diamond (NPD) and cubic boron nitride (BL-PcBN) were investigated by rubbing them against various ceramics such as SiO2, Si3N4, Al2O3 and SiC. The wear rates of NPD and BL-PcBN against SiO2 and Si3N4 at high speed rubbing (280-360 m/min) at a loading pressure of 55 MPa (starting condition) were considerably high, indicating the main wear process is a chemical reaction. BL-PcBN specimens were found to be worn at much higher (more than ten times) rates than NPD, suggesting that cBN highly reacts with these ceramics in comparison with diamond under the experiment condition.

Development and Application of Super-Hard Cutter Material

2011 ◽  
Vol 480-481 ◽  
pp. 676-680 ◽  
Author(s):  
Ji Bao Liu ◽  
Zheng Fang Shi ◽  
Xiao Jing Li ◽  
Di Wang
Keyword(s):  
Boron Nitride ◽  
Surface Quality ◽  
Material Properties ◽  
High Speed ◽  
High Stability ◽  
Cubic Boron Nitride ◽  
Polycrystalline Diamond ◽  
Cutting Process ◽  
High Speed Cutting ◽  
Finished Surface

The CIMS development and the high-speed cutting has given a higher demands on cutter performance. It is an tremendous tendency of studying excellent wearing resistance and high stability. PCD (polycrystalline diamond) and PCBN (poly cubic boron nitride) can obtain more higher finished surface quality, which cannot acquire by regular cutting process. This study introduces super-hard cutters materials (PCD and PCBN) development, and discusses two kinds of material properties, The features of them used in different cutting fields are given.

scholarly journals The Performance of Polycrystalline Diamond (PCD) Tools Machined by Abrasive Grinding and Electrical Discharge Grinding (EDG) in High-Speed Turning

2021 ◽  
Vol 5 (2) ◽  
pp. 34
Author(s):  
Guangxian Li ◽  
Ge Wu ◽  
Wencheng Pan ◽  
Rizwan Abdul Rahman Rashid ◽  
Suresh Palanisamy ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
High Speed ◽  
Flank Wear ◽  
Polycrystalline Diamond ◽  
Machining Efficiency ◽  
Crater Wear ◽  
Wear Process ◽  
High Speed Turning ◽  
Tools Wear ◽  
Pcd Tools

Polycrystalline diamond (PCD) tools are widely used in industry due to their outstanding physical properties. However, the ultra-high hardness of PCD significantly limits the machining efficiency of conventional abrasive grinding processes, which are utilized to manufacture PCD tools. In contrast, electrical discharge grinding (EDG) has significantly higher machining efficiency because of its unique material removal mechanism. In this study, the quality and performance of PCD tools machined by abrasive grinding and EDG were investigated. The performance of cutting tools consisted of different PCD materials was tested by high-speed turning of titanium alloy Ti6Al4V. Flank wear and crater wear were investigated by analyzing the worn profile, micro morphology, chemical decomposition, and cutting forces. The results showed that an adhesive-abrasive process dominated the processes of flank wear and crater wear. Tool material loss in the wear process was caused by the development of thermal cracks. The development of PCD tools’ wear made of small-sized diamond grains was a steady adhesion-abrasion process without any catastrophic damage. In contrast, a large-scale fracture happened in the wear process of PCD tools made of large-sized diamond grains. Adhesive wear was more severe on the PCD tools machined by EDG.

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]

Application and Advance in Super-Hard Tool Material

2011 ◽  
Vol 84-85 ◽  
pp. 228-231
Author(s):  
Jing Su ◽  
Yu Hua Zhang ◽  
Di Wang
Keyword(s):  
High Speed ◽  
High Performance ◽  
Cubic Boron Nitride ◽  
Tool Material ◽  
Polycrystalline Diamond ◽  
High Speed Cutting ◽  
Machining Quality ◽  
Finished Surface ◽  
Materials Used ◽  
Surface Precision

For the excellent properties, super-hard tool material has received much attention from researchers. The development of super-hard tool material for high-speed cutting could brought high machining quality and surface precision. For an engineer, adopt high performance of tool material, for example wearing resistance, high stability of PCD (polycrystalline diamond) and PCBN (poly cubic boron nitride) can get more information for obtaining higher finished surface quality that cannot acquire just by common cutting process. This paper introduces super-hard cutters materials (PCD and PCBN) development, and discusses several material properties. The features of materials used in different cutting fields are given.

Structurization of single-phase polycrystalline materials based on cubic boron nitride

1987 ◽  
Vol 26 (7) ◽  
pp. 557-562 ◽  
Author(s):  
V. F. Britun ◽  
G. S. Oleinik ◽  
A. N. Pilyankevich ◽  
S. S. Dzhamarov
Keyword(s):  
Boron Nitride ◽  
Single Phase ◽  
Cubic Boron Nitride ◽  
Polycrystalline Materials

Development of Super-Hard Cutter Material

2013 ◽  
Vol 341-342 ◽  
pp. 3-7
Author(s):  
Hui Ying Feng ◽  
Xiao Jing Li
Keyword(s):  
High Speed ◽  
Cubic Boron Nitride ◽  
Tool Material ◽  
Polycrystalline Diamond ◽  
Machining Process ◽  
Main Research ◽  
High Speed Cutting ◽  
Finished Surface ◽  
Materials Used ◽  
Surface Precision

Super-hard tool material is a main research point of mechanical engineering because of excellent performance. The development of technology for high-speed cutting process could enhance the machining quality and surface precision. It is a difficulty thing to get higher finished surface for traditional machining process. However, the super-hard cutter material could enhance the finished performance of tool material. For example, the wearing resistance, high stability of PCD (polycrystalline diamond) and PCBN (poly cubic boron nitride) can get more information for obtaining higher finished surface quality. The author introduces super-hard cutters materials (PCD and PCBN) development, and discusses several material properties. The features of materials used in different cutting fields are discussed.

Machinability of Pearlitic Cast Iron With Cubic Boron Nitride (CBN) Cutting Tools

2002 ◽  
Vol 124 (4) ◽  
pp. 820-832 ◽  
Author(s):  
Jiancheng Liu ◽  
Kazuo Yamazaki ◽  
Hiroyuki Ueda ◽  
Norihiko Narutaki ◽  
Yasuo Yamane
Keyword(s):  
Cast Iron ◽  
Boron Nitride ◽  
Tool Wear ◽  
High Speed ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Machining Conditions ◽  
Machining Center

In order to increase the accurate finishing productivity of pearlitic cast iron, face milling by CBN (Cubic Boron Nitride) cutting tools was studied. The main focus of the study is the machinability investigation of pearlitic cast iron with CBN cutting tools by studying the relationships among machining conditions such as feed rate, cutting speed as well as CBN cutting tool type, tool wear, workpiece surface quality, cutting forces, and cutting temperature. In addition, an emphasis is put on the effect of Al additive in pearlitic cast iron on its machinability and tool wear characteristics. High-speed milling experiments with CBN cutting tools were conducted on a vertical machining center under different machining conditions. The results obtained provide a useful understanding of milling performance by CBN cutting tools.

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