scholarly journals Studying wear resistance of steel friction pairs under high contact pressure in water-abrasive medium

2019 ◽  
Vol 2019 (4) ◽  
pp. 23-29
Author(s):  
Валерий Петровский ◽  
Valeriy Petrovskiy ◽  
Анатолий Рубан ◽  
Anatoliy Ruban
Keyword(s):  
Heat Treatment ◽  
Plastic Deformation ◽  
Wear Resistance ◽  
Friction Pair ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Abrasive Medium ◽  
Operational Tests ◽  
A Chain ◽  
Efficiency And Reliability

The paper is focused on the problem of the service life of the dredger chain, which largely depends on the efficiency and reliability of the hinge joint, when a mineral abrasive gets into the structural gap resulting in rapid wear of the joint under high dynamic loads. There has been developed a science-based technology of repairing parts of the assembly, without reducing the resource, from cheap and accessible (non-deficient) materials, taking into account modern technical and economic requirements, on samples. Wear resistance of samples of friction pairs has been defined in terms of a chain operating model. The research method is based on comparing the wear rate of samples in a pair made of steel 110Mn13 (sleeve - pin), 110Mn13 and 38CrNi3M (sleeve - pin), according to the standard technologies and taken as a reference, with pairs made of steel 110Mn13, C45K, facing with wire SV08A, electrodes E50A – UONI 13/55 and E – 190Cr5Si7 – LEZ – T – 590 – NG after heat treatment, chemical and heat treatment, surface plastic deformation. Samples were tested in the water-abrasive environment with a load of 6615 N (675 kgf). The wear resistance parameters were determined as following: 1) reference pairs of steel 110Mn13 (bushing-pin) and 110Mn13 (bushing), 38CrNi3Mo (pin); 2) pairs of steel 110Mn13 (bushing) and facing with wire SV08A (pin); 3) pairs of steel 110Mn13 (bushing) and cladding with electrodes E–190Cr5Si7–LEZ –T–590– NG (pin); 4) pairs of steel C45K (bushing) and cladding with E –190Cr5Si7 – LEZ – T – 590 – NG electrodes (pin); 5) pairs of steel C45K (bushing) and clad-ding with E50A – UONI 13/55 electrodes (pin). A graph of dependence of the bushing and pin wear on the relations of initial hardness and structures of friction pair has been built. It is recom-mended to restore the pin with wear-resistant electrodes E – 190Cr5Si7 – LEZ – T – 590 – NG paired with 110Mn13 steel bushing with surface plastic deformation. The wear resistance of a pair, with a different combination of structures, does not depend on the ratio of hardness of Hsl / Hfin. The materials of the pair worn within the reference samples can be recommended for the operational tests.

Investigation of tool wear resistance when smoothing parts

2020 ◽  
Vol 98 (4) ◽  
pp. 40-44
Author(s):  
D. Marchenko ◽  
◽  
K. Matvyeyeva ◽  
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Tool Wear ◽  
Surface Plastic Deformation ◽  
Positive Influence ◽  
Surface Plastic

The article discusses the method of surface plastic deformation of steel parts by smoothing. The positive influence of this method on the wear resistance of the tool has been established under conditions of intense wear and with abundant lubrication

Effect of Molybdenum on the Wear Properties of (Ti,Mo)C-TiB2-Mo2B Particles Reinforced Fe-Based Laser Cladding Composite Coatings

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
M. Zhang ◽  
S. X. Luo ◽  
S. S. Liu ◽  
X. H. Wang
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Wear Properties ◽  
Laser Cladding Process

(Ti,Mo)C, TiB2, and Mo2B particles reinforced Fe-based composite coatings were fabricated by laser cladding process. The effects of Molybdenum (Mo) on the microstructure and wear properties of the coatings were investigated. The results show that block-like or cuboidal TiB2, Mo2B and flower-like (Ti, Mo)C ceramics reinforcements were formed in the coatings. The size of reinforcements reduced with the increasing of FeMo70. However, cracks were found in the coating, while the addition of FeMo70 exceeded 9 wt %. The laser cladding coating presented a good wear resistance with a 9 wt % addition of FeMo70. With the increasing of FeMo70, the coatings enhanced the capability of resisting microcutting, microplowing, and surface plastic deformation.

Technological improvement of the durability of internal screw surfaces

2021 ◽  
Vol 2021 (9) ◽  
pp. 19-25
Author(s):  
Ivan Cukanov
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Experimental Studies ◽  
Average Diameter ◽  
Surface Plastic Deformation ◽  
Quality Parameters ◽  
Surface Plastic ◽  
Technological Improvement ◽  
Screw Surface ◽  
Internal Screw

The methods and some ways of technological improvement of the durability of internal screw surfaces are given. To increase the durability, finishing and strengthening machining with surface plastic deformation and threading with a cutter of a variable average diameter are proposed. The dependences for the specification of machining modes and the results of experimental studies of the screw surface quality parameters and wear resistance of running nuts are given.

TECHNOLOGY OF COMBINED ELECTROMECHANICAL TREATMENT WITH PROFILE ROLLING

2020 ◽  
pp. 21-27
Author(s):  
V. R. Edigarov
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Surface Layer ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Electromechanical Treatment ◽  
Lubricating Material ◽  
Increase Wear Resistance ◽  
Oil Pockets ◽  
Selection Of

The technology of combined electromechanical treatment with profile rolling is presented, which is a combination of electromechanical treatment and surface plastic deformation, which allows to create on the surface directed regular microrelief. The proposed technology is tested during processing of parts of multipurpose tracked and wheeled machines operating under difficult loading conditions, signalternating dynamic loads, often with limited lubricant or presence of abrasive in its composition. Reasonable selection of relief (pattern) of treated surface makes it possible to maximize retention of lubricating material in zone of tribocontact, as well as to increase wear resistance of parts and to create residual compression stresses in surface layer. The mechanical properties of the surface layer of the sample with a strengthened geometric pattern by changing the microhardness of the smoothed surface and oil pockets (channels) obtained by surface plastic deformation were examined. Electromechanical treatment by rolling the profile makes it possible to create on the surface a strengthened surface layer with naturally varying parameters with the specified regular micro-relief including oil pockets (channels) and reinforced tracks, at the same time considerable increase of wear resistance of triboscreating is provided.

scholarly journals Improving the durability of moving joints working in conditions of intensive wear

2020 ◽  
Vol 97 (3) ◽  
pp. 39-44
Author(s):  
D. Marchenko ◽  
K. Matvyeyeva ◽  
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Abrasive Wear ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
Positive Effect

The article discusses the method of surface plastic deformation of steel parts by rolling them with rollers. The positive effect of this method on the wear resistance of friction pairs under conditions of intense abrasive wear and with abundant lubrication has been established.

New methods for surface plastic deformation of low-rigidity cylindrical machine parts

2018 ◽  
Vol 2018 (8) ◽  
pp. 16-24 ◽  
Author(s):  
Семен Зайдес ◽  
Semen Zaides
Keyword(s):  
Plastic Deformation ◽  
Surface Plastic Deformation ◽  
Surface Plastic ◽  
High Productivity ◽  
Surface Strengthening ◽  
New Methods ◽  
Machine Parts

Technological potentialities at finish-strengthening processing of low-rigid parts of shaft- and axle types with local ways of machining impact are rather limited. In the paper there are considered new ways for strengthening allowing obtaining qualitative surface strengthening in machine parts at high productivity of an engineering procedure.

Plastic deformation of collector plates at electric motor repair

2020 ◽  
pp. 79-82
Author(s):  
D.YU. Belan ◽  
G.B. Toder ◽  
K.V. Averkov ◽  
YU.V. Titov
Keyword(s):  
Plastic Deformation ◽  
Electric Motor ◽  
Roughness Parameter ◽  
Surface Plastic Deformation ◽  
Analytical Dependence ◽  
Surface Plastic ◽  
Machined Surface ◽  
Tool Surface ◽  
Diamond Burnishing ◽  
Traction Electric Motor

A tool was developed for smoothing the plates of an electric motor collector. An analytical dependence of the roughness parameter of the machined surface on the force applied to the tool is obtained. Keywords traction electric motor, collector, diamond burnishing tool, surface-plastic deformation, repair, roughness. [email protected]

Sign in / Sign up

Export Citation Format

Share Document