IMPROVING THE PERFORMANCE OF MINERAL CERAMIC BLADE CUTTING TOOLS

2021 ◽  
pp. 40-44
Author(s):  
Yu. M. Zubarev ◽  
M. A. Afanasenkov
Keyword(s):  
Chemical Elements ◽  
Cutting Tools ◽  
Vacuum Treatment ◽  
Hardened Layer ◽  
Configuration Model ◽  
Functional Surface ◽  
Surface Layers ◽  
Working Surface ◽  
Blade Cutting ◽  
Surface Hardened Layer

The article considers the possibility of improving the performance of mineral-ceramic cutting plates by removing most of the defects on their working surface due to the formation of functional surface layers by ion-vacuum treatment. A model of a surface-hardened layer for VOK-60 type ceramics is proposed. Based on the configuration model of the substance, chemical elements are selected for modifying the surface layer of ceramics. The results of laboratory and production tests that showed an increase in the performance of ceramic plates after implantation by at least two times are presented.

A general process for in situ formation of functional surface layers on ceramics

Nature ◽  
2002 ◽  
Vol 416 (6876) ◽  
pp. 64-67 ◽  
Author(s):  
Toshihiro Ishikawa ◽  
Hiroyuki Yamaoka ◽  
Yoshikatsu Harada ◽  
Teruaki Fujii ◽  
Toshio Nagasawa
Keyword(s):  
Functional Surface ◽  
Surface Layers ◽  
General Process ◽  
In Situ Formation

Influence of laser surface hardened layer on mechanical properties of re-engineered low carbon steel sheet

2017 ◽  
Vol 685 ◽  
pp. 168-177 ◽  
Author(s):  
Badirujjaman Syed ◽  
Sulthan Mohiddin Shariff ◽  
Gadhe Padmanabham ◽  
Shaumik Lenka ◽  
Basudev Bhattacharya ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Steel Sheet ◽  
Low Carbon Steel ◽  
Hardened Layer ◽  
Laser Surface ◽  
Low Carbon ◽  
Carbon Steel Sheet ◽  
Surface Hardened Layer

Селективный магнитный контроль толщины и степени упрочнения поверхностных слоев на стальных объектах

2021 ◽  
pp. 39-45
Author(s):  
А.В. Бызов ◽  
Д.Г. Ксенофонтов ◽  
В.Н. Костин ◽  
О.Н. Василенко
Keyword(s):  
Magnetic Flux ◽  
Internal Field ◽  
Hardened Layer ◽  
Strength Properties ◽  
Hardened Steel ◽  
Magnetic Characteristics ◽  
Surface Layers ◽  
Magnetic Parameters ◽  
Maximum Value ◽  
Tangential Field

The dependences of measured locally magnetic characteristics of surface-hardened steel objects on the thickness and physical properties of their surface layers are studied. It is shown theoretically and experimentally that a change in the thickness of the hardened layer on the surface of steel objects affects on the magnitude of the tangential field component on the surface of the object in the interpolar space significantly , as well as the change in the strength properties of the layer affects the magnitude of the magnetic flux in the "transducer-object" circuit. It is proposed to use this difference in magnetic parameters for selective testing of the surface hardening quality. It is shown that the coercive force measured locally by the internal field and the maximum value of the magnetic flux, which can be measured using a single transducer in single measuring cycle, can be used as diagnostic parameters.

Effect of diamond dressing on the state of the surface layers of high-speed steel cutting tools

1972 ◽  
Vol 4 (6) ◽  
pp. 516-518
Author(s):  
V. Ya. Bulanov ◽  
A. P. Shevel ◽  
P. A. Yudkovskii
Keyword(s):  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
The State ◽  
Surface Layers ◽  
Steel Cutting

Heat-Resistant Inorganic Fibers

2014 ◽  
Vol 89 ◽  
pp. 129-138 ◽  
Author(s):  
Toshihiro Ishikawa
Keyword(s):  
Heat Resistance ◽  
High Fracture Toughness ◽  
Ceramic Fibers ◽  
Functional Surface ◽  
Surface Layers ◽  
High Fracture ◽  
Sic Fibers ◽  
Heat Resistant ◽  
Historical View ◽  
Functional Ceramic

Up to now, many types of inorganic fibers have been developed. The main purpose is to develop composite materials with lightweight and high fracture toughness. Of these, carbon fiber has already established a very big market. By the way, representative oxide fibers (alumina/silica-based fibers) show heat-resistance’s limitation at around 1200°C. In order to improve the heat-resistance, some types of eutectic oxide-fibers have been studied. On the other hand, SiC fibers with both heat-resistance and oxidation-resistance were developed over 30 years ago. After that, lots of improvements have been performed, and finally several types of excellent heat-resistant SiC-polycrystalline fibers, which can be used up to about 1800°C, were developed from polycarbosilane. Using these fibers, lots of applications have been considered in the fields of aerospace, nuclear system, and so on. Furthermore, making the best use of the aforementioned production process, several types of functional ceramic fibers with gradient-like functional surface layers also have been developed. In this paper, of these inorganic fibers, heat-resistant SiC fibers will be addressed along with historical view point on ceramic fibers.

Functional surface layers in relaxor ferroelectrics

2020 ◽  
Vol 8 (23) ◽  
pp. 7663-7671
Author(s):  
Nitish Kumar ◽  
Scarlet Kong ◽  
Pankaj Sharma ◽  
Xi Shi ◽  
Gaurav Vats ◽  
...  
Keyword(s):  
Skin Layer ◽  
Relaxor Ferroelectrics ◽  
Optically Active ◽  
Defect Concentration ◽  
Functional Surface ◽  
Surface Layers ◽  
Layer Structures ◽  
Unique Capability

We demonstrate a unique capability to control the formation and properties of skin layer structures in relaxor ferroelectrics by adjusting defect concentration. It is shown that the skin layer is polar and both electrically and optically active.

THE INFLUE NCE OF CUTTING FLUID CONTAINING ZINC ASPARTATE ON THE WEAR OF CUTTING TOOLS DURING TURNING

Tribologia ◽  
2019 ◽  
Vol 286 (4) ◽  
pp. 53-61
Author(s):  
Monika MADEJ ◽  
Joanna KOWALCZYK ◽  
Dariusz OZIMINA ◽  
Łukasz NOWAKOWSKI ◽  
Andrzej KULCZYCKI
Keyword(s):  
Cutting Tools ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Surface Layers ◽  
Zinc Compounds ◽  
Cnc Lathe ◽  
Optical Profilometer ◽  
Technological Quality ◽  
Zinc Aspartate

The paper presents the results of tests of the wear of cutting tools following the process of facing with lubrication with cutting fluids. The tests were carried out on a CNC lathe with the use of two cutting fluids: one based on mineral oil and the other containing zinc aspartate. After machining, the tool wear was measured using a stereoscopic inspection microscope. Observation of surface morphology and identification of elements was performed using a scanning electron microscope with a EDS analyser. Measurements of the geometric structure of the surface of turned elements were performed using an optical profilometer. The non-toxic coolant with zinc aspartate used in the tests resulted in the formation of surface layers enriched with zinc compounds, which directly translated into the improvement of technological quality of the workpiece.

Calculation of stress relaxation in a surface-hardened layer near the hole in the disk of a turbine in a gas-turbine engine

1988 ◽  
Vol 20 (8) ◽  
pp. 1088-1095
Author(s):  
Yu. P. Samarin ◽  
E. V. Grinevich ◽  
L. A. Muratova ◽  
V. P. Radchenko
Keyword(s):  
Stress Relaxation ◽  
Gas Turbine ◽  
Hardened Layer ◽  
Gas Turbine Engine ◽  
Turbine Engine ◽  
Surface Hardened Layer
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