scholarly journals Technological potentialities of parts machining in devices with rotating electromagnetic field and outlooks in their use

2020 ◽  
Vol 2020 (10) ◽  
pp. 22-28
Author(s):  
Valeriy Lebedev ◽  
Anatoliy Kochubey Anatoliy Anatol'evich ◽  
Georgiy Dyomin ◽  
Andrey Shirin
Keyword(s):  
Electromagnetic Field ◽  
Production Waste ◽  
Experimental Investigations ◽  
Waste Processing ◽  
Metal Production ◽  
Coating Application ◽  
Magnetic Dynamic ◽  
Physical Effects ◽  
Dynamic Processing ◽  
Application Fields

There are presented application fields of devices with the rotating electromagnetic field. The essence and physical effects stipulating for their use in the technology of manufacturing machinery, coating application, and also metal production waste processing during the processing with ferromagnetic indenters are shown. There are shown the results of experimental investigations depicting technological potentialities of magnetic-dynamic processing in finish-strengthening.

scholarly journals Selection of Non-Magnetic Fraction from the Slime Wastes of Metal Production in the Electromagnetic Field

2019 ◽  
Vol 297 ◽  
pp. 04002 ◽  
Author(s):  
Yuri Vernigorov ◽  
Valery Lebedev ◽  
Lidianna Chunakhova
Keyword(s):  
Electromagnetic Field ◽  
Iron Ore ◽  
Inhomogeneous Magnetic Field ◽  
Silica Content ◽  
Magnetic Fraction ◽  
Metal Production ◽  
Effective Technology ◽  
Maximum Development ◽  
Iron Ore Concentrate ◽  
Selection Of

It is proved that the use of a variable inhomogeneous magnetic field, created by the superposition of constant and variable, strongly inhomogeneous fields, is considered to be very promising for the separation of non-magnetic fraction from powders of magnetic materials. This article introduces the effective technology of separation of non-magnetic fraction from the sludge wastes of metal production in the electromagnetic field, which allows to destroy the aggregates, to separate the abrasive and to get products of high purity. A complex on processing of grinding sludge includes the following blocks: the loading block with dispenser; block of preliminary squeezing and washing of DRC; the block of drying; the block of a refinement; the block of division of sludge fractions. Experimental approbation of the proposed technological scheme of sludge separation, which had been carried out on iron ore concentrate of class 63 microns with silica content of 4.57% of the mass, showed that with the field parameters close to the calculated, the magnetic vibrating layer of iron powder PZh-4M has the maximum development; increasing the separation time leads to more efficient separation in the interval of field induction gradient from 550 mT/ m to 610 mT/m.

On the Dynamic Loading Effects of Soil on Plastic Water Distribution Pipes and its Significance for Leak Detection Using Acoustics

2018 ◽  
Author(s):  
Oscar Scussel ◽  
Michael J. Brennan ◽  
Jennifer M. Muggleton ◽  
Fabrício C. L. de Almeida ◽  
Amarildo T. Paschoalini
Keyword(s):  
Water Distribution ◽  
Propagation Speed ◽  
Accurate Estimate ◽  
Experimental Investigations ◽  
Pipe System ◽  
Plastic Fluid ◽  
Loading Effects ◽  
Physical Effects ◽  
Wave Propagation Speed ◽  
The Uk

Detection and location of leaks in buried plastic fluid-filled pipes are topics of increasing concern for water distribution companies. Acoustic correlation techniques have been widely used to provide an accurate estimate of the position of a leak in order to reduce the wastage of water. However, this technique depends on an accurate estimate of the wave propagation speed along the pipe, which is heavily dependent on the type of soil in which the pipe is buried. The soil also affects the distance that leak noise will propagate along the pipe. This paper describes theoretical and experimental investigations into the way the coupling conditions between the pipe and the soil affects the propagation characteristics of the wave that propagates leak noise in the pipe. Two water pipe systems which have different soil properties are considered: one is in Brazil and the other one is in UK. For the Brazilian pipe system, it is found that the shear modulus rather than the bulk modulus of the soil, has a profound effect on the wave motion in the pipe since it is buried in a clay-like soil. In this case, only the shear wave in the soil propagates away from the pipe. For the UK pipe system, which has sandy soil, both compressional and shear waves propagate away from the pipe. An analysis of the physical effects of fluid-pipe-soil interface and their corresponding parameters on the pipe wave speed and attenuation is also carried out. The results show that the axial coupling between the pipe and the soil has an important effect in the UK pipe system, but has a negligible effect in the Brazilian pipe system.

scholarly journals Ecotechnnology – Physical and Technical Foundation of Pyrolyses Parameters

2006 ◽  
Vol 1 ◽  
pp. 191
Author(s):  
G. Noviks
Keyword(s):  
Electromagnetic Field ◽  
High Frequency ◽  
Optimal Parameter ◽  
Solid Wastes ◽  
Waste Processing ◽  
Pyrolysis Process ◽  
Organic Mass ◽  
Electrical Parameters ◽  
Environmentally Safe ◽  
Best Parameters

The paper deals with the environmentally safe waste processing problem. The pyrolysis is one of the most prospective among different utilization methods of residuals. For hearing organic mass in the pyrolysis process up to 5500C author recommends to apply high frequency and high intensity electromagnetic fields. It is necessary to analyze relationships between waste electrical parameters and frequency of electromagnetic field to achieve optimal parameter of electromagnetic heating. For this purpose was worked out a device for measuring dielectric permittivity and dielectric losses in the range of electromagnetic frequencies between 0.05 – 50 MHz. The measurements were accomplished on the samplers composed of different quantity of organic and inorganic (dielectrics and conductors) materials. The methodology of calculation optimal physical and technical squares for implementation of suggested technology was applied and experimental data were analyzed. The best parameters of electromagnetic field for pyrolysis of solid wastes is frequency f=1,5 – 4∙106 Hz and electric intensity E=180 – 220 kV/m and E=390 – 40 kV/m for waste of different composition.

Technological features of parts hardening in rotating electromagnetic field devices

2020 ◽  
pp. 424-427
Author(s):  
V.A. Lebedev ◽  
A.A. Kochubey ◽  
I.V. Davydova ◽  
G.V. Demin
Keyword(s):  
Electromagnetic Field ◽  
Surface Layer ◽  
Experimental Studies ◽  
Technological Capabilities ◽  
Practical Application ◽  
Physical Effects

The rotating electromagnetic field devices are presented and the physical effects that determine their application in hardening of the surface layer during processing by ferromagnetic indenters are disclosed. The results of experimental studies are presented that reveal the technological capabilities of magnetodynamic processing and the field of its practical application in the technology of manufacturing parts.

Improving the Efficiency of Metal Production Waste Processing in Electromagnetic Field

2021 ◽  
Vol 1037 ◽  
pp. 759-766
Author(s):  
Valery A. Lebedev ◽  
Yury M. Vernigorov ◽  
Andrey A. Shirin ◽  
Lidianna V. Chunakhova ◽  
Elena P. Melnikova
Keyword(s):  
Electromagnetic Field ◽  
Energy State ◽  
Experimental Studies ◽  
Ferromagnetic Particle ◽  
Particle Sizes ◽  
State Control ◽  
Layer Formation ◽  
Metal Production ◽  
Factors Affecting ◽  
Promising Application

A set of theoretical and experimental studies showing the promising application of devices with the rotating electromagnetic field in the technology of processing sludge wastes of metal production is presented in the paper. Regularities of magneto-vibrational layer formation in those devices and parameters of its energy state control are disclosed. There has also a model of agglomerate destruction in the magneto-vibrational layer been proposed, which establishes a connection of agglomerate particle sizes with the strength of magnetic field induction required for its destruction. The results of studies of the process of ferromagnetic particle grinding are presented, factors affecting the degree of grinding are determined. The possibility of forming an ultradisperse fraction during grinding in the rotating electromagnetic field has been experimentally proved. The effect of porousness on the degree of ferromagnetic particle grinding is shown.

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