Tool Wear by Solution: A Quantitative Understanding

1980 ◽  
Vol 102 (4) ◽  
pp. 303-309 ◽  
Author(s):  
B. M. Kramer ◽  
N. P. Suh
Keyword(s):  
High Speed ◽  
Future Research ◽  
Wear Process ◽  
Wear Rates ◽  
High Speed Cutting ◽  
Tool Materials ◽  
Relative Wear ◽  
Quantitative Calculation ◽  
Quantitative Understanding ◽  
First Time

The mechanism controlling the crater wear of single phase carbide cutting tool materials in the high speed cutting of steel has been identified. A simple model has been developed to describe the wear process. Cutting tests employing inserts coated with Group IVB and VB carbides show excellent agreement with the relative wear rates predicted from the thermodynamic properties of the tool-work system. Thus, for the first time, quantitative calculation of the relative wear rates of various potential tool materials from thermodynamic data is possible. The technique is believed to have broad application to other tool-work combinations. Implications for future research are discussed.

High quality and high speed cutting of 4H-SiC JFET wafers including PCM structures by using Thermal Laser Separation

2014 ◽  
Vol 1693 ◽  
Author(s):  
Dirk Lewke ◽  
Matthias Koitzsch ◽  
Karl Otto Dohnke ◽  
Martin Schellenberger ◽  
Hans-Ulrich Zuehlke ◽  
...  
Keyword(s):  
High Speed ◽  
Metal Layer ◽  
Back Side ◽  
The Novel ◽  
Metal Structures ◽  
High Speed Cutting ◽  
Current State ◽  
Current Transition ◽  
First Time ◽  
Laser Separation

ABSTRACTThe silicon carbide (SiC) market is gaining momentum hence productivity in device manufacturing has to be improved. The current transition from 100 mm SiC-wafers to 150 mm SiC-wafers requires novel processes in the front-end as well as the back-end of SiC-chip production. Dicing of fully processed SiC-wafers is becoming a bottleneck process since current state-of-the-art mechanical blade dicing faces heavy tool wear and achieves low throughput due to low feed rates in the range of only a few mm/s. This paper presents latest results of the novel dicing technology Thermal Laser Separation (TLS) applied for separating SiC-JFETs. We demonstrate for the first time that TLS is capable of dicing fully processed 4H-SiC wafers, including back side metal layer stacks, process control monitoring (PCM), and metal structures inside the dicing streets with feed rates up to 200 mm/s. TLS thus paves the way to efficient dicing of 150 mm SiC-wafers.

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.

Ceramic Tool Materials for High Speed Cutting Process

2010 ◽  
Vol 65 ◽  
pp. 56-60 ◽  
Author(s):  
Gabriela Górny ◽  
Roman Pampuch ◽  
Ludosław Stobierski ◽  
Paweł Rutkowski
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
High Speed ◽  
Solid Lubricant ◽  
Matrix Composites ◽  
Ceramic Tool ◽  
High Speed Cutting ◽  
Tool Materials ◽  
Material Homogeneity ◽  
Si3n4 Matrix

Frictional and mechanical properties of hot-pressed Al2O3 and Si3N4 - matrix composites containing up to 5 vol. % hexagonal BN as a solid lubricant. A very low coefficient of friction which is necessary for high-speed cutting has been observed. Fracture toughness remained constant with increase of h-BN content while flexural strength changes with the hBN content have been found to depend upon the material homogeneity. The work has been supported by EU Funds in Poland under contract UDA-POIG.01.03-12-024/08-00.and has been realized in the frame of scientific-industrial consortium.

Research on Tool Materials for High-Speed Cutting

2014 ◽  
Vol 644-650 ◽  
pp. 4792-4794 ◽  
Author(s):  
Guo Ru Xie ◽  
Wei An Xie
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Research Direction ◽  
Advanced Manufacturing ◽  
High Speed Cutting ◽  
Tool Materials ◽  
Coated Tools ◽  
Development Direction ◽  
Cutting Tool Materials

The high-speed cutting is an advanced manufacturing technology with efficient, high quality and low consume, it is also the development direction of cutting. The concept and characteristic of high-speed cutting is discussed. The performance and application of the major tool materials (such as ceramic cutting tools, diamond tools, CBN tools, coated tools) for high-speed cutting is described. At last, the paper discusses the developing prospect and research direction for high-speed cutting tool materials.

Research on the Wear Process of High Speed Cutting Ni-Based Superalloy

2014 ◽  
Vol 800-801 ◽  
pp. 102-106
Author(s):  
Jun Zhou ◽  
Ming Pu Liu ◽  
Hong Qi Sun
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Cutting Force ◽  
Wear Mechanism ◽  
High Speed ◽  
Cutting Tool ◽  
Cutting Temperature ◽  
Wear Process ◽  
High Speed Cutting ◽  
Cutting Tool Wear

As the main method of high efficiency cutting Ni-based superalloy, high-speed cutting can not but intensify the cutting-tool wear for the high cutting force and cutting temperature. So, it is very necessary to study the process of cutting-tool wear and wear mechanism, especially, the effect of cutting-tool wear on the cutting force, cutting temperature and surface roughness of machined workpiece. In this paper, investigation of tool wear in high-speed cutting is proposed, the PCDTiAlN carbide insert is used in the experiment, the cutting-tool wear and the corresponding cutting force, cutting temperature and surface roughness of machined workpiece is detected. It indicates that the cutting force, cutting temperature and surface roughness of machined workpiece is changed corresponding the cutting-tool wear,the wear process of coated tool include the coated material wears and base material wears,the wear mechanism is complex. Key word: superalloy, high-speed cutting, tool wear, wear form ; .

State of the Art of Graded Self-Lubricating Ceramic Cutting Tool Materials

2011 ◽  
Vol 66-68 ◽  
pp. 1598-1604 ◽  
Author(s):  
Guang Yong Wu ◽  
Chong Hai Xu ◽  
Yong Lian Zhang ◽  
Ming Dong Yi
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Solid Lubricants ◽  
High Speed Cutting ◽  
Tool Materials ◽  
Ceramic Cutting Tool ◽  
Rational Combination ◽  
Antiwear Properties ◽  
Research Prospect ◽  
Cutting Tool Materials

In this paper, the effects of addition of solid lubricants on mechanical properties, tribological properties and cutting performance of ceramic cutting tool materials were analyzed. The problem that existing homogeneous self-lubricating ceramic cutting tool materials were not available to possess rational combination of antifriction and antiwear properties was pointed out. The main methods to acquire graded self-lubricating materials were discussed. The design concept and research prospect of graded self-lubricating ceramic cutting tool materials were proposed, which would have promising applications in the field of high speed cutting.

Diffusion Study of Alumina Gray Cast Iron Pair

2010 ◽  
Vol 660-661 ◽  
pp. 739-745 ◽  
Author(s):  
Karolina Pereira Santos Tonello ◽  
Vânia Trombini Hernandes ◽  
Ana Helena A. Bressiani ◽  
José Carlos Bressiani
Keyword(s):  
Cast Iron ◽  
High Speed ◽  
Gray Cast Iron ◽  
Chemical Properties ◽  
Gray Cast ◽  
Wear Rates ◽  
High Speed Cutting ◽  
Alumina Composite ◽  
Alumina Composites ◽  
Cutting Processes

Specific properties of structural ceramics such as their mechanical and thermal stability permit their use in high-speed cutting processes that involve deep cuts and low wear rates. The process by which wear occurs in tribological contacts is complex and cannot be explained by one simple wear mechanism. The contribution of different mechanisms to the total wear of a component is related to the mechanical and chemical properties of both the materials and the contact interface. In this investigation, diffusion tests were carried out to determine the influence of chemical interactions between alumina composite and gray cast iron, without the interference of mechanical wear mechanisms. These tests were carried out at 1100°C using static couples. The tests did not generate a strong metal–ceramic interface, indicating that the alumina composites were chemically stable under the test conditions.

A Study on the Microstructure of Nano-Scale Ceramic Tool Materials

2004 ◽  
Vol 471-472 ◽  
pp. 260-263
Author(s):  
Bin Zou ◽  
Chuan Zhen Huang ◽  
Han Lian Liu ◽  
Sui Lian Wang
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
Cutting Tool ◽  
Ceramic Materials ◽  
Second Phase ◽  
Microstructure Formation ◽  
High Speed Cutting ◽  
Tool Materials ◽  
Ceramic Tools ◽  
Nano Scale

Nano-scale ceramic materials are very suitable to be used as the high speed cutting tool owing to their excellent properties. The incorporation of nano-scale second phase, such as SiC and Ti(CxN1-x) particles, into a ceramic matrix can lead to an improvement in mechanical properties, which is contributed to a change in microstructure. However, the differences between nano-scale ceramic materials and monoclinic ceramic materials can be found through fabricating these two kinds of materials. Firstly the changes in microstructure that will affect the mechanical properties of the nano-scale ceramic materials are investigated as the nano-ceramic tools are compared with the monolithic ceramic tools. Secondly the effect of microstructure on the mechanical properties is discussed. Finally the microstructure formation mechanism of nano-ceramic materials is given on the bases of some hypotheses.

RANCANG BANGUN MESIN PEMOTONG RUMPUT TENAGA SURYA UNTUK NAVIGASI

2015 ◽  
Vol 1 (1) ◽  
pp. 5-16
Author(s):  
John Ohoiwutun
Keyword(s):  
High Speed ◽  
Solar Power ◽  
Human Life ◽  
Operating Cost ◽  
Fuel Oil ◽  
Kinematics And Dynamics ◽  
Control Input ◽  
High Speed Cutting ◽  
Lawn Mower ◽  
Coal Fuel

Utilization of conventional energy sources such as coal, fuel oil, natural gas and others on the one hand has a low operating cost, but on the other side of the barriers is the greater source of diminishing returns and, more importantly, the emergence of environmental pollution problems dangerous to human life. This study aims to formulate the kinematics and dynamics to determine the movement of Solar Power Mower. In this study, using solar power as an energy source to charge the battery which then runs the robot. Design and research was conducted in the Department of Mechanical Workshop Faculty of Engineering, University of Hasanuddin of Gowa. Control system used is a manual system using radio wave transmitter and receiver which in turn drive the robot in the direction intended. Experimental results showed that treatment with three variations of the speed of 6.63 m / s, 8.84 m / s and 15.89 m / sec then obtained the best results occur in grass cutting 15.89 sec and high-speed cutting grass 5 cm. Formulation of kinematics and dynamics for lawn mowers, there are 2 control input variables, x and y ̇ ̇ 3 to control the output variables x, y and θ so that there is one variable redudant. Keywords: mobile robots, lawn mower, solar power

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