Comparative Evaluation of Efficiency of Metal-Cutting Tool by Method of Pendulum Scribing

2015 ◽  
Vol 798 ◽  
pp. 452-456 ◽  
Author(s):  
Boris Y. Mokritskii ◽  
Dmitriy A. Pustovalov ◽  
Alexey Anatolevich Vereschaka
Keyword(s):  
Material Properties ◽  
Comparative Evaluation ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Low Cost ◽  
Tool Material ◽  
Maximum Width ◽  
Tool Materials ◽  
Metal Cutting Tool ◽  
The Relationship

Method of pendulum scribing was investigated in terms of the possibilities of using this method as a simple-to-use way with a relatively low cost for rapid evaluation of tool material properties. It has been established that by using this method the conditions of loading of the tool material are closest to the real conditions in which the tool operates. Was revealed the relationship between the maximum width and length of the track pendulum scribing and physico-mechanical properties of tool materials. Application of the proposed methodology allows passing to predicting the performance properties of the tool, such as tool life under the specified conditions.

scholarly journals SYSTEM FOR CONTROLLING MASS BALANCE OF GASES AND REAGENTS DURING FORMATION OF ION-PLASMA COATINGS

2020 ◽  
pp. 67-75
Author(s):  
K. V. Diadiun
Keyword(s):  
Mass Balance ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Tool Material ◽  
Automated System ◽  
Effective Control ◽  
Ion Plasma ◽  
Physical Deposition ◽  
Plasma Coatings ◽  
Metal Cutting Tool

Providing an increase in the working capacity of a metal-cutting tool, it is possible to significantly increase the productivity of mechanized labor, thereby reducing the cost of purchasing a new tool and saving on other accompanying technological components. During the operation of the cutting tool, the main load is transferred to its working part, this, as a rule, leads to partial wear or complete destruction of the planes and cutting edges. There are a number of technologies for processing working surfaces, which provides them with additional strengthening, the most effective of which is the method of applying special coatings to the surface of the cutting tool. Taking into account the specifics of the processes of formation of coatings, they can be divided into three main groups [1]. The first group includes methods in which the formation of coatings is carried out mainly due to diffusion reactions between saturating elements and structures of the instrumental material. The second group includes methods of forming coatings by a complex mechanism. The third group includes methods of forming coatings due to chemical and plasma-chemical reactions of particle flux simultaneously in volumes of space immediately adjacent to the saturable surfaces of the instrumental base. One such technology is the CIB (condensation and ion bombardment) method, which is a physical deposition of coatings. The most characteristic feature of coatings produced by this method is the absence of a transition zone between the coating and the tool material. This makes it possible to obtain a complex of properties on the working surfaces of the tool without deteriorating its original properties. The article is devoted to the issues of increasing the efficiency of ion-plasma technologies through the development and implementation of an automated system for analyzing and controlling the mass balance of reagent gases under conditions of several gases supply. Thus, the improvement of the technology of coating the working surfaces of the cutting tool, namely, the effective control of the process of applying ion-plasma coatings with the introduction of an automated system for analyzing and controlling the mass balance of reagent gases under conditions of supplying several gases is an urgent task.

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.

Selection of strengthening coatings based on simulation results

2020 ◽  
pp. 147-150
Author(s):  
B.Ya. Mokritsky ◽  
E.S. Sitamov
Keyword(s):  
Metal Cutting ◽  
Cutting Tool ◽  
Tool Material ◽  
Operating Conditions ◽  
Multilayer Coatings ◽  
Software Environment ◽  
Simulation Results ◽  
Cutting Processes ◽  
Metal Cutting Tool ◽  
Selection Of

By modeling cutting processes in the ANSYS and DEFORM software environments, can significantly reduce costs when choosing rational tool material for metal-cutting tool. For multilayer coatings on carbide substrate this is difficult for number of reasons. This possibility is shown and examples for using of the DEFORM software environment for choosing of rational or competing coatings, including for “designing” of the coating for the specified operating conditions of metal-cutting tool are presented.

Role of energy consumption, cutting tool and workpiece materials towards environmentally conscious machining: A comprehensive review

2019 ◽  
Vol 234 (3) ◽  
pp. 335-354 ◽  
Author(s):  
Salman Pervaiz ◽  
Sathish Kannan ◽  
Ibrahim Deiab ◽  
Hossam Kishawy
Keyword(s):  
Energy Consumption ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Cutting Process ◽  
Machining Process ◽  
Workpiece Material ◽  
Tool Materials ◽  
Wide Range ◽  
Cutting Operation

Metal-cutting process deals with the removal of material using the shearing operation with the help of hard cutting tools. Machining operations are famous in the manufacturing sector due to their capability to manufacture tight tolerances and high dimensional accuracy while simultaneously maintaining the cost-effectiveness for higher production levels. As metal-cutting processes consume a great amount of input resources and generate some material-based waste streams, these processes are highly criticized due to their high and negative environmental impacts. Researchers in the metal-cutting sector are currently exploring and benchmarking different activities and best practices to make the cutting operation environment friendly in nature. These eco-friendly practices mainly cover the wide range of activities directly or indirectly associated with the metal-cutting operation. Most of the literature for sustainable metal-cutting activities revolves around the sustainable lubrication techniques to minimize the negative influence of cutting fluids on the environment. However, there is a need to enlarge the assessment domain for the metal-cutting process and other directly and indirectly associated practices such as enhancing sustainability through innovative methods for workpiece and cutting tool materials, and approaches to optimize energy consumption should also be explored. The aim of this article is to explore the role of energy consumption and the influence of workpiece and tool materials towards the sustainability of machining process. The article concludes that sustainability of the machining process can be improved by incorporating different innovative approaches related to the energy and tool–workpiece material consumptions.

scholarly journals The influence of hydrojet surface processing on the adhesive strength of wear-resistant coatings deposited on a metal-cutting tool of oxynitride ceramics

2018 ◽  
Vol 224 ◽  
pp. 01066
Author(s):  
Anton Seleznev ◽  
Anton Smirnov ◽  
Pavel Peretyagin
Keyword(s):  
Metal Cutting ◽  
Cutting Tool ◽  
Surface Defects ◽  
New Approach ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Cutting Ceramics ◽  
Nitride Ceramics ◽  
Cutting Inserts ◽  
Metal Cutting Tool

The work represents a new approach of preliminary surface treatment of replaceable polyhedral cutting ceramics inserts for significant increase of adhesion strength with deposited wear-resistant nitride ceramics. By this method the hydrojet treatment was used to repair surface defects occurring during manufacturing process of any required geometry of cutting inserts.

scholarly journals Construction of a specialized control system for brush machine and rounding the cutting edges of a metal cutting tool

2019 ◽  
Vol 298 ◽  
pp. 00064
Author(s):  
Petr Nikishechkin ◽  
Nikita Grigoriev ◽  
Nadezhda Chervonnova
Keyword(s):  
Control System ◽  
Metal Cutting ◽  
Structural Model ◽  
Cutting Tool ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Machine Control ◽  
Metal Cutting Tool

The basic aspects of preparing a cutting tool for applying wear-resistant coatings to it, in particular, the use of brush technology to round its cutting edges, are investigated. A structural model for constructing a specialized brush machine control system has been developed and the basic aspects of its development have been determined.

Soldering and cementation of hard-alloy metal cutting tool

1986 ◽  
Vol 22 (9) ◽  
pp. 421-423
Author(s):  
V. V. Du ◽  
M. L. Polyakova ◽  
V. I. Grebenev ◽  
V. P. Zhludov ◽  
V. A. Groshev ◽  
...  
Keyword(s):  
Hard Alloy ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Metal Cutting Tool ◽  
Alloy Metal

Stress Distribution in a Wedge for Boundary Conditions Approximating to the Rake-Face Loads on a Metal Cutting Tool

1973 ◽  
Vol 15 (3) ◽  
pp. 200-209 ◽  
Author(s):  
P. F. Thomason
Keyword(s):  
Stress Distribution ◽  
Metal Cutting ◽  
Cutting Tool ◽  
Contact Length ◽  
Rake Face ◽  
Line Field ◽  
Tangential Stresses ◽  
Detailed Assessment ◽  
Metal Cutting Tool ◽  
Infinite Wedge

An analysis of published experimental and theoretical slip-line field results for the metal cutting process suggests that, when the tool and workpiece are of high elastic modulus, a reasonable first approximation to the rake-face loading will consist of uniformly distributed normal and tangential stresses over the contact length. An indication of the form of the stress distribution at the tip of a cutting tool is therefore obtained from an isothermal–elastic solution for a two-dimensional infinite wedge, loaded antisymmetrically by uniform normal and tangential stresses adjacent to the apex. Only a preliminary assessment of the results is made, in relation to cutting tool wear and fracture problems, since a more detailed assessment will await a complete thermoelastic solution to the problem.

Transient Thermal Stresses in the Quarter-Plane and their Relation to the Thermal-Cracking of Cutting Tools

1974 ◽  
Vol 16 (5) ◽  
pp. 322-330
Author(s):  
P. F. Thomason
Keyword(s):  
Metal Cutting ◽  
Thermal Stresses ◽  
Cutting Tool ◽  
Crack Nucleation ◽  
Cutting Tools ◽  
Thermal Cracking ◽  
Quarter Plane ◽  
Metal Cutting Tool ◽  
Transient Thermal ◽  
Cemented Carbide Tools

The transient thermal stresses in an insulated quarter-plane, subject to an instantaneous heat source on a segment of the surface, are determined with the aid of the Green's function for a two-dimensional infinite space. Numerical results for the transient thermal stresses at the surfaces of the quarter-plane are superimposed on previous isothermal results for cutting-load stresses in a π/2 wedge, to provide a model for a metal-cutting tool in the transient stages of a cutting process. The results are related to the problem of the thermal-cracking of cutting tools, and mechanisms of crack nucleation and propagation are proposed for both ceramic and cemented-carbide tools.

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