Optimizing the grinding of high-speed steel by wheels of cubic boron nitride

2007 ◽  
Vol 27 (12) ◽  
pp. 916-919 ◽  
Author(s):  
Ya. I. Soler ◽  
D. Yu. Kazimirov ◽  
A. V. Prokop’eva
Keyword(s):  
Boron Nitride ◽  
High Speed ◽  
Cubic Boron Nitride ◽  
High Speed Steel

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]

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.

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.

Hard Metal Matrix Composites Reinforced with Cubic Boron Nitride

2012 ◽  
Vol 727-728 ◽  
pp. 310-313 ◽  
Author(s):  
Guerold Sergueevitch Bobrovinitchii ◽  
Ana Lúcia Diegues Skury ◽  
Sérgio Neves Monteiro ◽  
Marcia G. de Azevedo
Keyword(s):  
Boron Nitride ◽  
High Speed ◽  
High Pressures ◽  
Cubic Boron Nitride ◽  
Hard Metal ◽  
Matrix Composites ◽  
Powder Mixtures ◽  
Negative Effect ◽  
Machining Operations ◽  
Composite Properties

Cubic boron nitride (cBN) composites with hardmetal such as metal turning and rocks drilling, WC-Co, matrix are alternative substitutes for similar diamond composites in high speed machining operations and rocks and drilling. Although it possesses related technical properties close to diamond, cBN has the inconvenience of reacting with hardmetals. This deteriorates the composite properties. A possible solution to this negative effect is to apply high pressures during the sintering operation. In this work, powder mixtures of cBN with a hardmetal (WC15%Co) were subjected to pressures up to 7.0GPa and temperatures up to 1400°C for 40 seconds. The results showed significantly higher values of hardness and compressive strength as well as an improved wear resistance.

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