Plasma surface modification in liquid environment

Балановский, А. Е.; Grechneva, M. V.; Huy, Vu Van; Zhuravlev, D. A.

doi:10.1088/1755-1315/87/9/092004

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Several compositions were proposed as the plasma-forming substance. As a result of a number of experiments [1][2][3][4] the optimum composition of the plasmaforming mixture was revealed. It consisted of ethyl alcohol, benzene, and water, which makes it possible to impregnate the article surface with carbon.…”

Section: Results and Considerationmentioning

confidence: 99%

Structure Formation Processes During the Plasma Cementation of Steel and the Subsequent Heat Treatment

Konstantinova¹,

Гусева²,

Gozbenko³

et al. 2019

Proceedings of the International Conference on Aviamechanical Engineering and Transport (AviaENT 2019)

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The article represents the results of investigating the structure of the layers, obtained using the specimens of lowcarbon steel, subjected to plasma cementation. The dependence of their structure on the percentage of graphite in the coating, which served as a carbon source, is established. The influence of the subsequent heat treatment of specimens after plasma cementation in the macro-and micro-smelting regime to form the graphite inclusions in the structure has been studied. Heat treatment consisted in conducting of annealing under different conditions.

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Section: Results and Considerationmentioning

confidence: 99%

Structure Formation Processes During the Plasma Cementation of Steel and the Subsequent Heat Treatment

Konstantinova¹,

Гусева²,

Gozbenko³

et al. 2019

Proceedings of the International Conference on Aviamechanical Engineering and Transport (AviaENT 2019)

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“…One of the most important problems in the dynamics of rolling stock is the study of forced oscillations of railway vehicles [6][7][8][9][10][11], caused by uneven rails.…”

Section: Introductionmentioning

confidence: 99%

The Vertical Dynamics of the Car, Taking into Account the Irregularity of the Track Gauge

Gozbenko¹,

Kargapoltsev²,

Kuznetsov³

et al. 2019

Proceedings of the International Conference on Aviamechanical Engineering and Transport (AviaENT 2019)

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The paper deals with the vertical dynamics of the car to ensure the safety of trains, the reliability of the cars and the track. It is accepted that the dynamic model of the car has five degrees of freedom. The complex oscillatory process is divided into separate components: vertical, transverse and longitudinal horizontal. It is taken into account that the springsuspended weight of the car can also make angular oscillations. The equations of motion of a mechanical system are composed using the second-kind Lagrange equations by first generating the expressions for potential and kinetic energy. Since one of the most important problems in the dynamics of rolling stock is the study of forced oscillations of railway vehicles caused by irregularities of rails, therefore, the formulas of Professor N.N. Kudryavtsev were used as a kinematic effect on bogies. In the model being developed, the two wheels of the car trolley will be considered as one, then the equivalent perturbation is the average value of the perturbations transmitted to each wheel, that is, the pitching of the bogies can be neglected. Isolated perturbations are determined using reasoning about the time of passage of the wheels over the track irregularity. The obtained differential equations are rather complicated for an analytical solution. Therefore, to find solutions, the MathCAD mathematical software package was used. It provides a set of built-in functions for the numerical solution of differential equations. The massinertial characteristics and geometrical dimensions of the gondola car of model 12-132 are taken as input data. The speed of movement of the car and the length of the irregularities varied in a fairly wide range. As a result of numerical modeling, graphs of linear and angular oscillations versus irregularity lengths were obtained. It was found that the amplitude of oscillations varies within certain limits from 0 to 0.007 (vertical oscillations) and from-10-4 to +10-4 rad. (for the speed of 20 m/s and the length of the irregularity of 25 m).

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Plasma surface modification in liquid environment

Cited by 2 publications

References 6 publications

Structure Formation Processes During the Plasma Cementation of Steel and the Subsequent Heat Treatment

Structure Formation Processes During the Plasma Cementation of Steel and the Subsequent Heat Treatment

The Vertical Dynamics of the Car, Taking into Account the Irregularity of the Track Gauge

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