scholarly journals Engineering methods for technological support of regulated roughness parameters of machinery operation surfaces during machining

2019 ◽  
Vol 2019 (4) ◽  
pp. 40-48 ◽  
Author(s):  
Анатолий Суслов ◽  
Anatoliy Suslov ◽  
Владимир Фёдоров ◽  
Vladimir Fedorov ◽  
Максим Нагоркин ◽  
...  
Keyword(s):  
Statistical Modeling ◽  
Sliding Friction ◽  
Formation Processes ◽  
Roughness Parameters ◽  
Technological Systems ◽  
Technological Support ◽  
Technological Heredity ◽  
Friction Surfaces

There are considered fundamentals of engineering methods for the technological support of roughness regulated parameters of machinery operation surfaces during machining with the possibility of a specified law of their changes within the transition. A recommended way for the solution of this problem which includes the analysis of conditions for parts operation and corresponding to them values and laws for changing parameters supported; the problems of a statistical modeling of their formation processes; the conditions for uniform wear technological support of sliding friction surfaces with examples of technological systems and results of their use taking into account technological heredity.

scholarly journals Technological support of selective transfer on friction surface

2021 ◽  
Vol 2021 (5) ◽  
pp. 35-39
Author(s):  
Viktor Hohlov
Keyword(s):  
Friction Surface ◽  
Selective Transfer ◽  
Roughness Parameters ◽  
Processing Methods ◽  
Technological Support ◽  
Friction Surfaces

Dependences for the computation of roughness parameters and their technological support essential for selective transfer on friction surfaces are offered. Processing methods which should be used for their fulfillment are shown.

Technology of sliding friction surface machining based on hard wear-resistant coating use taking into account technological inheritance impact

2020 ◽  
Vol 2020 (12) ◽  
pp. 31-38
Author(s):  
Tatiana Mihalenko
Keyword(s):  
Wear Resistance ◽  
Friction Surface ◽  
Sliding Friction ◽  
Quality Parameters ◽  
Surface Machining ◽  
Technological Support ◽  
Coating Application ◽  
Technological Inheritance ◽  
Theoretical Investigations ◽  
Friction Surfaces

The matters of technological support of wear-resistance for sliding friction surfaces are considered. The results of experimental theoretical investigations of modes impact of preliminary machining, coating application and sliding friction surfaces finishing upon their quality parameters are shown.

Investigation of the formation of friction surface microgeometry of a wear-resistant coating during friction with a metal counterbody

2021 ◽  
pp. 147-152
Author(s):  
N.F. Struchkov ◽  
G.G. Vinokurov ◽  
O.N. Popov
Keyword(s):  
Statistical Model ◽  
Binomial Distribution ◽  
Friction Surface ◽  
Sliding Friction ◽  
Wear Particles ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Frictional Interaction ◽  
Surface Microgeometry ◽  
Friction Surfaces

Were is researched the friction surfaces of wear-resistant coatings with modifying additives Al2O3 and metal counterbody made of ShH15 steel, and also reveals the factors that influence the formation of coating microgeometry of surface during sliding friction. A statistical model has been developed based on the binomial distribution of removed wear particles to describe the frictional interaction during friction of the coating with a metal counterbody.

Wear Problems of Slide-Friction Pair

2015 ◽  
Vol 220-221 ◽  
pp. 361-366
Author(s):  
Guntis Springis ◽  
Janis Rudzitis ◽  
Anita Avišāne ◽  
Maris Kumermanis ◽  
Jevgenijs Semjonovs ◽  
...  
Keyword(s):  
Service Life ◽  
Sliding Friction ◽  
Friction Pair ◽  
Calculation Model ◽  
Surface Geometry ◽  
Wear Process ◽  
Layer Material ◽  
Wear Calculation ◽  
Form Deviation ◽  
Friction Surfaces

A number of different mechanisms and devices may involve sliding-friction surfaces. The issues of service life and its prediction for the details of such surfaces have always been of particular importance. The article determines the most suitable wear calculation model that allows considering the set of parameters necessary for calculating slide-friction pair. The offered model is based on the application of the theories of several branches of sciences. Since the wear process is variable and many-sided, it is influenced by numerous different parameters, for example, surface geometry (roughness, waviness, form deviation, etc.), physical and mechanical conditions of the upper layer, material components, wear regime, wear temperature, etc.

scholarly journals Method of test blanks in assurance of surface roughness parameters of machine parts

2018 ◽  
pp. 9-14
Author(s):  
Олег Горленко ◽  
Oleg Gorlenko
Keyword(s):  
Rough Surface ◽  
Statistical Approach ◽  
Roughness Parameter ◽  
Surface Profile ◽  
Roughness Parameters ◽  
Measuring Systems ◽  
Technological Support ◽  
Machine Parts ◽  
Definition Of ◽  
Parameter Values

A method for technological support of roughness parameters for machine parts based on an experimental statistical approach is considered. The essence of the method consists in the processing of test blanks (or their test surfaces) according to a pre-planned scheme, in the roughness parameter assessment of test blanks, in the development of mathematical statistical model of the connection of roughness parameters with technological factors and on the basis of the model given a definition of their levels ensuring obtaining the roughness parameter values specified at machining a basic batch blanks. The peculiarities in technological support of relative supporting lengths of a rough surface profile and also a method for the formation of complex functional parameters of a rough surface are touched upon. The necessity for the creation of portable control measuring systems allowing the realization in practice this method is emphasized.

scholarly journals REGULATIONS OF ROUGHNESS PARAMETERS FOR MACHINERY FUNCTIONAL SURFACES IN TECHNOLOGICAL DOCUMENTATION

2019 ◽  
Vol 2019 (3) ◽  
pp. 4-12
Author(s):  
Максим Нагоркин ◽  
Maksim Nagorkin ◽  
Владимир Федоров ◽  
Vladimir Fedorov ◽  
Игорь Пыриков ◽  
...  
Keyword(s):  
Theory And Practice ◽  
Theory Approach ◽  
Roughness Parameters ◽  
Technological Support ◽  
Functional Surfaces ◽  
Algorithmic Solution ◽  
Starting Point ◽  
Value Range ◽  
Technological Documentation ◽  
Further Development

On the basis of the probability theory approach to the formation of surface roughness parameters in machinery during machining there is offered an algorithmic solution of an urgent problem of the regulations of roughness parameters for machinery functional surfaces in technological documentation. The algorithmic solutions for the following parameter versions are developed (RSS 2.309-73): the highest value; the smallest value; a value range; a rated value with ultimate deviations; an indication of two and more parameters. The theoretical investigation results may serve as a starting point for the further development of theory and practice for the technological support of roughness parameters in machinery functional surfaces with the required reliability. Foe a wide actual realization of investigation results the solution of a number of problems is needed: 1) the development of standards or guide information on the regulations in technological documentation of required technological values of roughness parameters; 2) the further development of investigations in the field of technological support reliability of quality parame-ters (including roughness) of blank surfaces in the course of machining in technologically flexible systems.

MAGNETIC FIELD IMPACT UPON TRIBOTECHNICAL CHARACTERISTICS OF SLIDING FRICTION PAIRS WITH RESPECT TO FRICTION SHOCK ABSORBERS

2020 ◽  
Vol 2020 (11) ◽  
pp. 4-11
Author(s):  
Victor Tikhomirov ◽  
Aleksandr Gorlenko ◽  
Stanislav Volohov ◽  
Mikhail Izmerov
Keyword(s):  
Magnetic Field ◽  
Friction Factor ◽  
Sliding Friction ◽  
Friction Pair ◽  
Wear Intensity ◽  
Friction Contact ◽  
Positive Effects ◽  
Investigation Methods ◽  
Friction Surfaces ◽  
The Magnetic Field

The purpose of the work is to examine magnetic field impact upon properties of friction steel surfaces at “pin-disc” tests. The magnetic field impact upon a friction contact with the substantiation of the mechanism of its impact is proved experimentally, and also the results bringing to positive effects for friction pairs are emphasized. The analysis of experiment results has shown that a friction factor can be increased by 88% as compared with the version without magnetic field impact upon friction pair. At that under the magnetic field impact wear intensity becomes less for about half, and also friction surfaces quality becomes better as compared with the tests without a magnetic field as there are no vivid traces of plowing that is explained with the wear particles elimination from the friction area under the magnetic field impact. The investigation methods: the fulfillment of laboratory physical experiments with the use of the developed and patented laboratory plant according to the “pin-disc” scheme. The investigation results and novelty: the magnetic field impact upon a value of friction force, a factor of slip and wear intensity of friction surfaces is determined. The conclusion: it is possible to control a friction factor and wear intensity through the magnetic field impact upon a friction contact.

scholarly journals Simulation System of Technological Support of Automated Complex

2019 ◽  
Vol 224 ◽  
pp. 06001
Author(s):  
A.V. Oleynik ◽  
L.V. Kuznetsova ◽  
A.V. Nikolaev ◽  
L.Yu. Kuznetsov ◽  
M. Dimitrov
Keyword(s):  
Mathematical Modeling ◽  
Resource Allocation ◽  
Dynamic Programming ◽  
Functional Equations ◽  
Simulation System ◽  
Technological Systems ◽  
Optimality Principle ◽  
Technological Support ◽  
Dynamic Programming Problem ◽  
Made In

Mathematical modeling of technical and technological systems and processes occurring in these systems can be interpreted as multi-step processes of solving managerial problems, where the application of classical methods for obtaining numerical results is possible. In particular, it is practical to apply the theory of dynamic programming based on the use of functional equations and the optimality principle to solve the problem of resource allocation. In the formulation and solution of the dynamic programming problem, the process is divided into stages in time, and at each stage decisions at which the goal is achieved are made. In our case, homogeneous stages are considered, and the use of the optimality principle leads to the fact that a decision made at each stage is the best regarding the entire process.

Sliding Friction Behavior of Bulk Ti3SiC2 under Difference Normal Pressures

2007 ◽  
Vol 280-283 ◽  
pp. 1353-1356 ◽  
Author(s):  
Zhen Ying Huang ◽  
Hong Xiang Zhai ◽  
Yang Zhou ◽  
Yi Fan Wang ◽  
Zhi Li Zhang
Keyword(s):  
Friction Coefficient ◽  
Sliding Friction ◽  
Transition Period ◽  
Low Carbon Steel ◽  
Normal Pressure ◽  
Low Carbon ◽  
Friction Behavior ◽  
Steady Stage ◽  
Initial Stage ◽  
Friction Surfaces

The friction behavior of Ti3SiC2 sliding against low carbon steel was studied. Tests were carried out on a block-on-disk type friction tester, with the normal pressures from 0.2 MPa to 0.8 MPa and the sliding speed of 20 m/s. The results showed that, irrespective of the normal pressure, the friction coefficient exhibits a transition period in the initial stage of a sliding friction process, in which the friction coefficient increases from an initial value and tends to a saturation value, and then enters into a relatively steady stage. The results also showed that, the friction coefficient of the steady stage decreases gradually from 0.35 to 0.26 with increase in normal pressure from 0.2 MPa to 0.8 MPa. The friction surfaces were observed by using SEM. It was found that all the surfaces were covered by a layer consisting of the frictional products with antifriction effect, and that the denseness and the thickness of the layer were increased with increase in normal pressure applied.

scholarly journals An Application of Antifriction Coatings to Increase the Lifetime of Friction Units

2021 ◽  
Vol 346 ◽  
pp. 03024
Author(s):  
Aleksandr V. Antsupov ◽  
Artem A. Fedulov ◽  
Alexey V. Antsupov ◽  
Victor P. Antsupov
Keyword(s):  
Thin Films ◽  
Sliding Friction ◽  
Experimental Studies ◽  
Rolling Friction ◽  
Polymer Coatings ◽  
Flexible Tool ◽  
Friction Units ◽  
Antifriction Coatings ◽  
Friction Surfaces ◽  
Metal Polymer

This article presents a generalization of the results of theoretical and experimental studies on increasing the reliability of friction units by making antifriction coatings on the working surfaces with a flexible tool. The principle scheme and the essence of the method of cladding with a flexible tool (CFT) - shock-frictional forming of thin films from various materials on the surface of the workpiece with flexible elements of rotating metal brushes are described. Versions of cladding machinery and many parts of movable joints with various forms of friction surfaces, on which various metal, polymer, single and two-layer antifriction coatings are applied, are presented. The modification of the frictional application of polymer coatings is shown. The following is a brief description of the most significant effective results for increasing the durability of the industrial sliding friction and rolling friction units.

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