Forecasting Performance of Ceramic Cutting Tool

2017 ◽  
Vol 736 ◽  
pp. 86-90 ◽  
Author(s):  
Vyacheslav Maksarov ◽  
A. Khalimonenko
Keyword(s):  
Electrical Resistance ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
Ceramic Materials ◽  
Specific Electrical Resistance ◽  
Testing Methods ◽  
Microstructural Parameters ◽  
Forecasting Performance ◽  
Nondestructive Testing Methods

The article considers the problems of forecasting the performance of cutting tools equipped with replaceable ceramic cutting bits. It is proposed to forecast the operability of ceramic tools on the ground of dependence between its performance characteristics and the microstructural parameters of the tool material. It is proposed to determine the parameters of ceramic bits microstructure by a nondestructive testing methods based on measuring the specific electrical resistance of ceramic materials. As a result of the study we have undertaken, a relationship was detected between the performance and specific electrical resistance of ceramic cutting tools.

Influence of the Microstructure of Cutting Ceramics on the Efficiency of the Machining Process

2021 ◽  
Vol 1040 ◽  
pp. 21-27
Author(s):  
Aleksei D. Khalimonenko ◽  
E.G. Zlotnikov ◽  
Ilya V. Gorshkov ◽  
M.A. Popov
Keyword(s):  
Electrical Resistance ◽  
Dielectric Material ◽  
Experimental Studies ◽  
Tool Material ◽  
Test Sample ◽  
Machining Process ◽  
Ceramic Plate ◽  
Conductive Material ◽  
Microstructural Parameters ◽  
Cutting Ceramics

The article deals with the determination of the efficiency of a multi-bladed tool equipped with inserts made of oxide-carbide cutting ceramics, depending on the microstructural parameters of the tool material. The microstructural parameters of the oxide-carbide cutting ceramic, which affect the performance of the tool, are proposed to be determined according to the electrical resistance of the tool material. In order to implement the method for determining the working capacity of the instrument, a basic design of the device for measuring the electrical resistance of the material of the instrument is proposed. The device for measuring the electrical resistance of ceramic plates consists of a body made of a dielectric material, with channels for supplying a conductive material and a groove for installing a case with a test sample. During the test, the channels are filled with a liquid conductive material, which fills the cavity formed by the channel of the case, the groove of the case and the plate itself under test. To ensure uniform filling of the cavity, after the introduction of the liquid conductive material, metal balls are installed into the channels, which are made in such a size as to ensure free sliding along the channel, but not to let the liquid pass into the upper part of the channel. The tested ceramic plate is installed in the walls of the removable case. The walls of the removable case include electrodes, which, when the device is in operation, are inserted into a cavity with a liquid conductive material at one end, and are connected to an ohmmeter at the other. Using a device for measuring the electrical resistance of ceramic plates, it is possible to determine the operability of the tool and guarantee its operation without rejection for a certain period of time, which was confirmed by experimental research in the milling of workpieces of machine parts made of gray cast iron. Experimental studies in multi-edge machining with cutters with different values ​​of electrical resistance of ceramic plates made it possible to plot graphs of the dependence of the quality of machining during milling on the operability of the tool and on the time of the machining process.

Experimental Research on Superlong Deep-Hole Drilling Processing Technology for Steel of 4145H Drill Collar

2011 ◽  
Vol 201-203 ◽  
pp. 2597-2600
Author(s):  
Zhan Feng Liu ◽  
Rui Liang Li
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
Cutting Parameters ◽  
Machining Process ◽  
Hole Drilling ◽  
Deep Hole ◽  
Actual Structure ◽  
Steel Processing ◽  
Drill Collar

Through the analysis for steel of 4145H drill collar, Research into the various factors of cutting, such as the cutting tool material, cutting-tool angle and cutting parameters, combined with the actual structure of the workpiece and the superlong deep-hole processing method for study. In the test, the machining process is analyzed, especially the process of boring and honing. The test result indicates that the trepanning process is stable and reliable to solve the superlong deep hole (Φ71mm×7500mm) of 4145H drill collar steel processing problems of production if the optimizing cutting method is appropriate and the cutting tools and the cutting parameters are rational.

Analysis of Tool Wear—Part I: Theoretical Models of Flank Wear

1969 ◽  
Vol 91 (3) ◽  
pp. 790-796 ◽  
Author(s):  
A. Bhattacharyya ◽  
I. Ham
Keyword(s):  
Tool Wear ◽  
Cutting Tool ◽  
Flank Wear ◽  
Cutting Tools ◽  
Tool Material ◽  
High Strength ◽  
Theoretical Models ◽  
Flank Surface ◽  
Form Stability ◽  
Sufficient Strength

Cutting tools of sufficient strength against failure by brittle fracture or loss of “form stability” through rise of interface temperatures, still continue to fail by a process of “wear,” which is loss of cutting tool material through gradual interaction between the work and the tool material. Such wear can take place either at the principal flank surface or at the top face of the cutting tool for roughing and semiroughing cuts. Wear may also occur at the auxiliary flank surface resulting in grooving wear during fine machining or machining of high strength materials. The causes for such wear processes include (i) mechanical interaction (abrasion or adhesion and transfer type), (ii) thermochemical interaction (diffusion or chemical reaction). As a part of this investigation on tool wear, two theoretical models have been proposed for explaining mechanical wear at the flank surface. These models explain the nature and characteristics of wear growth and the sensitiveness and dependence of interaction phenomena between the tool-work pair.

Methods of Forecasting Wear Resistance of Cutting Tools Based on the Properties of their Materials

2014 ◽  
Vol 682 ◽  
pp. 491-494 ◽  
Author(s):  
Vladislav Bibik ◽  
Elena Petrova
Keyword(s):  
Tool Life ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Chemical Properties ◽  
Tool Material ◽  
Composition Structure ◽  
Metal Cutting Tool ◽  
Physical And Chemical ◽  
Thermo Physical Properties

The author considers methods of forecasting metal-cutting tool life based on characteristics of cutting tool material. These characteristics depend on differences in numerical values of physical and chemical properties of tool material due to changes in its composition, structure, and production process variables. The described methods allow obtaining the information necessary for forecasting the tool life beyond the process of cutting, for example at the stage of cutting tool manufacturing. The author suggests using the method of registration of thermo-physical properties of the tool material as a promising forecasting technique.

Hardened Steel Turning by Means of Modern CBN Cutting Tools

2013 ◽  
Vol 581 ◽  
pp. 188-193 ◽  
Author(s):  
Łukasz Ślusarczyk ◽  
Grzegorz Struzikiewicz
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
Chip Morphology ◽  
Cutting Parameters ◽  
Hardened Steel ◽  
Cutting Depth ◽  
Cutting Rate ◽  
Steel Turning ◽  
The Impact

The paper presents an analysis of the impact of cutting parameters such as cutting rate, feed rate, cutting depth and cutting tool material grade for surface roughness, the components of the total cutting force and chip morphology. We analysed the process of rolling 145Cr steel with a hardness of 55HRC with Wiper type tools with different percentage of CBN. The results and conclusions were presented.

Cutting Ceramic Materials: Influence of Abrasive Machining and Coating Deposition on the Performance Potential

2014 ◽  
Vol 1025-1026 ◽  
pp. 317-324 ◽  
Author(s):  
Sergey Nikolaevich Grigoriev ◽  
Marina Volosova ◽  
Yury Andreevich Melnik ◽  
Natalia Cherkasova ◽  
Alina Gurkina
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Combined Treatment ◽  
Cutting Tools ◽  
Ceramic Materials ◽  
Abrasive Machining ◽  
Performance Potential ◽  
Vacuum Plasma ◽  
Operational Characteristics ◽  
Cutting Ceramic

Ceramic cutting tools have a large potential by high speed processing of difficult-to-cut steels and alloys, however due to its fragility they don’t assure the required reliability level of cutting process. For improving the operational characteristics of the ceramic cutting tool combined treatment can be used namely the preliminary planetary grinding of the insert surface and the following deposition of the vacuum-plasma coatings (TiCr)N, (ZrCrHf)N and other.

Development & Application of Polycrystal Cubic Boron Nitride Cutting Tool Material

2008 ◽  
Vol 375-376 ◽  
pp. 168-171 ◽  
Author(s):  
Jing Ying Zhang ◽  
Qi Xun Yu ◽  
Si Qin Pang ◽  
Shu Suo Meng ◽  
Tian Shun Wang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Cutting Tool ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
Ferrous Metal ◽  
Tool Material ◽  
Production Method ◽  
Rough Machining ◽  
Hardened Cast ◽  
Development Application

This article illustrates the production method and mechanical & physical properties of polycrystal cubic boron nitride (PCBN) cutting tool material. As shown by the turning machining of hardened steel, cold-hardened cast iron and composite materials, PCBN cutting tool is superior in cutting performance to cemented carbide and ceramics cutting tools. In recent years, with great improvement in production process and overall mechanical properties of PCBN cutting tool material, it can effectively make rough machining of ferrous metal. This article contributes to the popularization and application of this cutting tool.

Techanics Study on PcBN Cutting Tool Dry Turning Chilled Cast Iron

2011 ◽  
Vol 418-420 ◽  
pp. 1342-1345
Author(s):  
Yun Hai Jia ◽  
Zhi Qun Ye ◽  
Hai Zhu Wang ◽  
Hua Wei Jing
Keyword(s):  
Cast Iron ◽  
Feed Rate ◽  
Cutting Tool ◽  
Bending Strength ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Tool Material ◽  
Dry Turning ◽  
Cut Depth ◽  
Chilled Cast Iron

Chilled cast iron is a typical hard and brittle material, often be used to make all kinds of roller. According to chilled cast iron machining characteristics, cutting tool material should has high red hardness, good impact resistance and wear resistance, high bending strength and large thermal conductivity coefficient. For determination of the suitable cutting parameters in machining chilled cast iron by PcBN cutting tools dry turning, the samples which are prepared to be used in the experiment, 200 mm in length and 120 mm in diameter, are machined in lathe. During experiments, cutting tool parameters and dry turning parameters, such as edge chamfer width and angle, feed rate, cutting speed and cut depth are investigated. The suitable edge chamfer width and angle, cutting speed and feed rate are determined according to cutting tool life and cutting tools flank wear. Finally, edge chamfer width of 0.2 mm, edge chamfer angle of -15 degree, cutting speed of 90 m/min, feed rate of 0.15 to 0.2 mm/rev and cut depth of 0.3 mm gave the satisfied results.

scholarly journals Real-Time Simulation of Force Parameters for Diagnostics of Ceramic Tool Condition During Milling of High-Hardness Steel Parts

2019 ◽  
Vol 224 ◽  
pp. 05004
Author(s):  
Marina A. Volosova ◽  
Vladimir D. Gurin ◽  
Anton E. Seleznev ◽  
Leonid E. Shvartsburg ◽  
Mariuch Jenek
Keyword(s):  
Real Time ◽  
High Speed ◽  
High Performance ◽  
Cutting Tools ◽  
Tool Material ◽  
High Hardness ◽  
Ceramic Materials ◽  
Hardened Steels ◽  
Time Simulation ◽  
Wide Range

Cutting ceramics is a high-performance tool material for high-speed machining of hard steels and alloys. Ceramic materials have high hardness and heat resistance in a wide range of temperatures, as well as chemical passivity in relation to most of the workpieces. However, the wider application of ceramic cutting tools is limited due to the low reliability - unpredictable fragile fracture of the cutting edge in different periods of operation. The study discusses mathematical simulations of force parameters in the milling of hardened steels using ceramic cutting tools. The simulation results were used to develop a system for the metalworking technological system state diagnostics. Mathematical software for calculations of the set of force parameters through computer simulations with taking into account the tool wear has been developed. The developed system allows calculating and graphically displaying a set of force parameters appearing during face milling of hardened steels in the real-time.

Effect of residual elements on the machinability of leaded free machining steels

1980 ◽  
Vol 295 (1413) ◽  
pp. 87-88 ◽  
Keyword(s):  
Wear Rate ◽  
Tool Wear ◽  
Tool Life ◽  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
High Speed Steel ◽  
Low Carbon ◽  
Wear Rates

The machinability of a material can be defined in terms of the wear rate of the cutting tool used to machine the material. The lower the tool wear rate or the greater the tool life the better the machinability. The wear processes of cutting tools are complicated, but recent work has shown that cutting tool wear rates during machining can be directly related to tool material wear rates when rubbing in a modified crossed cylinder wear experiment (Mills & Akhtar 1975). The wear of cutting tools can be simulated by simple experiments. Here I present results on the effect of total residual levels in leaded low carbon free machining steels on the tool life of M2 high speed steel. The results will be discussed in terms of a simple wear model.

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