COMPOSITE MATERIAL WITH SELF-SHARPENING EFFECT OBTAINED BY EXPLOSION WELDING

The analysis of the state of the art of obtaining wear-resistant cutting tools. The expediency of manufacturing a composite cutting tool by explosion welding is shown. The analysis of the microstructure and properties of the composite material after explosion welding and subsequent annealing is presented.

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Cemented carbide cutting tools coated with silicon nitride

Izvestiya Vuzov Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya (Universitiesʹ Proceedings Powder Metallurgy аnd Functional Coatings) ◽

10.17073/1997-308x-2018-4-104-109 ◽

2018 ◽

pp. 104-109

Author(s):

V. S. Panov

Keyword(s):

Silicon Nitride ◽

Cutting Tool ◽

Cutting Tools ◽

Cemented Carbide ◽

Wear Resistant ◽

Factors Affecting ◽

Wear Resistant Coatings ◽

Cemented Carbide Tool ◽

Tools Wear ◽

Coated Cemented Carbide

The paper describes the technology of producing a wear resistant silicon nitride coating on cemented carbide cutting tools and factors affecting its structure and thickness. A review of domestic and foreign authors’ works is given on the properties and applications of cemented carbides in cutting, drilling, die stamping tools, wear resistant materials, for chipless processing of wood, plastics. It is noted that one of the promising ways of cutting tool development is using indexable throwaway inserts (ITI) with wear resistant coatings. The choice of silicon nitride as a material for cemented carbide tool coating is justified. The data on silicon nitride deposition methods, investigation of cutting tool structures and properties are provided. Laboratory and factory tests of Si3N4-coated cemented carbide tools demonstrated coating applicability in improving the wear resistance and lifetime of cutting inserts.

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Development of a Method for Obtaining a Wear-Resistant Coating for a Cutting Tool

10.21741/9781644901755-54 ◽

2022 ◽

Author(s):

A.E. Litvinov

Keyword(s):

Metal Cutting ◽

Cutting Tool ◽

Cutting Tools ◽

High Hardness ◽

Dynamic Loads ◽

Wear Resistant ◽

Physicomechanical Characteristics ◽

Vibration Resistance ◽

The Common ◽

Band Saw

Abstract. The article presents a method for producing a nanostructured wear-resistant high-hard coating with high physicomechanical and strength characteristics, resistance to shock and vibration loads. The result is an increase in adhesion between the substrate and the coating, as well as an increase in microhardness. One of the common methods of metal cutting is band-cutting machines that use closed band saws as cutting tools. Since materials with high physicomechanical characteristics (hardness, strength, etc.) are increasingly being used in modern production, which significantly complicates the cutting process and makes increased demands on the cutting tool. To expand the range of processed materials for which the productive use of band-cutting machines is possible, it became necessary to create a band saw with higher cutting characteristics. At the same time, the specificity of the working conditions of the band saw shows that the blade should have such characteristics as increased vibration resistance, resistance to alternating and dynamic loads, and the cutting part of the saw should have increased resistance to shock, dynamic, alternating loads, have high hardness, as well as increased wear resistance.

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Developments in Dynamics of Composite Material Shafts

International Journal of Rotating Machinery ◽

10.1155/s1023621x97000183 ◽

1997 ◽

Vol 3 (3) ◽

pp. 189-198 ◽

Cited By ~ 11

Author(s):

S. P. Singh ◽

H. B. H. Gubran ◽

K. Gupta

Keyword(s):

Composite Material ◽

State Of The Art ◽

The State ◽

Future Developments ◽

The Past

The review traces the development of composite shafts in varied applications. The different theoretical and experimental aspects of dynamics of composite shafts, under investigation for the past two decades, are reviewed and the state of the art discussed including possible future developments.

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Augmented Reality Applied in Machining Processes and Cutting Tools Management

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.693.279 ◽

2014 ◽

Vol 693 ◽

pp. 279-284

Author(s):

Radu Emanuil Petruse ◽

Paul Dan Brîndaşu

Keyword(s):

Augmented Reality ◽

Management System ◽

Cutting Tool ◽

State Of The Art ◽

Cutting Tools ◽

Management Systems ◽

Machining Processes ◽

Tool Management ◽

Practical Solution ◽

User Friendly

This paper describes the benefit obtained from implementing a cutting tool management system. Also, a state of the art on tool management systems available on the market is presented. By analysing the drawbacks generated by the implementation of such a system, we are providing a cheap and practical solution: an Augmented Reality aided machining and tool management system. Using augmented reality we managed to improve the tool management systems by providing, at the scene of action, all the necessary tool information in a much more user friendly way.

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Practical Picture Processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100051700 ◽

1974 ◽

Vol 32 ◽

pp. 338-339

Author(s):

T. A. Welton

Keyword(s):

Radiation Damage ◽

Coherence Length ◽

Spatial Information ◽

State Of The Art ◽

Coherent Radiation ◽

The State ◽

Energy Spread ◽

Electron Micrograph ◽

Picture Processing ◽

Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

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