METHOD AND STRUCTURE FOR WEAR-RESISTANCE ESTIMATION OF MATERIALS OF NON-HOMOGENEOUS COMPOSITION AND NATURE UNDER DIFFERENT CONDITIONS OF ABRASIVE MEDIUM EFFECT

2018 ◽  
Vol 0 (10) ◽  
pp. 39-43
Author(s):  
A.M. Mikhalchenkov ◽  
◽  
A.V. Dyachenko ◽  
A.A. Loktev ◽  
◽  
...  
Keyword(s):  
Wear Resistance ◽  
Medium Effect ◽  
Abrasive Medium ◽  
Homogeneous Composition

Analysis of Wear-Resistant Materials of Mixer - Pneumosuperchargers Blades Operating under Conditions of Abrasive Wear

2021 ◽  
Vol 316 ◽  
pp. 893-898
Author(s):  
Natalya Gabelchenko ◽  
Artem Belov ◽  
Artem Kravchenko ◽  
Oleg Kryuchkov
Keyword(s):  
Mechanical Properties ◽  
Weight Loss ◽  
Wear Resistance ◽  
Chemical Composition ◽  
Abrasive Wear ◽  
Abrasive Medium ◽  
Wear Resistant ◽  
Comparative Tests ◽  
Before And After ◽  
110G13l Steel

We conducted comparative tests of the wear resistance of metals operating under abrasive conditions. Samples were cut from the working parts of mixer-pneumosuperchargers. The chemical composition and mechanical properties were determined. To compare samples under abrasive wear conditions, we designed and assembled a carousel installation. The principle of its operation is based on mixing the abrasive medium by the samples being studied with a given speed. Wear resistance was evaluated by weight loss by samples after several test cycles. To determine changes in the structure of the metal during abrasive wear, metallographic studies of the samples were carried out before and after the tests. It is shown that the best complex of service and mechanical properties is possessed by 110G13L steel.

Influence of a corrosive-abrasive medium on the wear resistance of 12Kh18N10T steel with surface hardening

1987 ◽  
Vol 23 (3) ◽  
pp. 273-275
Author(s):  
V. M. Golubets ◽  
V. V. Kozub ◽  
Ya. V. Shchuiko ◽  
M. I. Pashechko
Keyword(s):  
Wear Resistance ◽  
Surface Hardening ◽  
12Kh18n10t Steel ◽  
Abrasive Medium

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.

Abrasive Wear Characteristics of Ni-base Self-fluxing Alloy Spraywelding Overlays

1997 ◽  
Author(s):  
Z. Ding ◽  
R. Knight ◽  
R.W. Smith
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Process Parameters ◽  
High Stress ◽  
Resistance Mechanisms ◽  
Abrasive Wear Resistance ◽  
Abrasive Medium ◽  
Hardness Tests ◽  
Pin On Disc ◽  
Wear Tests

Abstract The results of low stress, pin-on-disc and high stress grinding abrasive wear tests on coatings produced by plasma and oxy-acetylene flame spraywelding are presented. FNil5A and FNiWC35 Ni-based self-fluxing alloys were selected as typical spraywelding materials for abrasive wear resistance. The abrasive wear resistance mechanisms of welded overlays produced by various materials and processes were also characterized by hardness tests, microstructural and compositional analyses, and through analysis of the effect of different kinds of abrasive on the wear resistant of Ni-base self-fluxing spraywelding overlays. Results showed that FNiWC35 overlays exhibited improved resistance under low stress abrasion, but the relative wear resistances of FNiWC35 and FNil5A still depended primarily on the type and hardness of the abrasive medium used. For the same material, the abrasive wear resistance of oxyacetylene flame sprayed overlays was higher than that produced by plasma spraywelding. The wear resistance of the plasma spraywelding overlays depended not only on the material, but also strongly on the spraywelding process parameters.

Analysis of the effect of iron-carbon alloy constituents on their wear resistance in contact with the abrasive medium

2015 ◽  
Vol 4 (3) ◽  
pp. 79-88
Author(s):  
Попов ◽  
Dmitriy Popov ◽  
Символоков ◽  
A. Simvolokov
Keyword(s):  
Wear Resistance ◽  
Laboratory Testing ◽  
Abrasive Medium

The article provides an overview of the influence of the main structural com-ponents (metallic, graphite, carbides) iron-carbon alloys on their wear resistance in the interaction with the abrasive. The results of laboratory testing of metals for wear

Paper 16: Recent Developments in Polytetrafluorethylene-Based Dry Bearing Materials and Treatments

1966 ◽  
Vol 181 (15) ◽  
pp. 58-69
Author(s):  
G. C. Pratt
Keyword(s):  
Wear Resistance ◽  
Exothermic Reaction ◽  
Wear Properties ◽  
Mating Surface ◽  
Recent Developments ◽  
Bearing Materials ◽  
Lead Oxides ◽  
Homogeneous Composition ◽  
Phosphated Steel ◽  
High Degree

The addition of bronze or certain phosphates to lead/polytetrafluorethylene (p.t.f.e.) mouldings can produce a high degree of wear resistance. Similar performance can be obtained from porous bronze or phosphated steel surfaces impregnated with lead/p.t.f.e. The effectiveness of lead or lead oxides in these ternary compositions is related to an exothermic reaction with p.t.f.e. It is postulated that during rubbing the reaction takes place at local hot spots and results in the formation of a chemically bonded p.t.f.e. layer on the mating surface. Polyethylene compositions have similar wear properties to p.t.f.e. compositions, but the response of polymers to the bronze+lead type of addition decreases as the molecular structure of the polymer deviates from the simple CF2 or CH2 type. The optimum bronze/lead ratio for maximum wear resistance depends on the rubbing conditions. For instance, it is not possible to combine in a homogeneous composition maximum dry wear resistance, when a low bronze content is required, and maximum wet wear resistance, which requires a higher bronze content.

Wear resistance of steel 40kh in an oil-abrasive medium after electroboron polishing

1978 ◽  
Vol 13 (3) ◽  
pp. 322-324
Author(s):  
V. M. Gurei ◽  
V. I. Ivanets ◽  
N. S. Koshevoi
Keyword(s):  
Wear Resistance ◽  
Steel 40Kh ◽  
Abrasive Medium

Effect of Microstructure on the Wear Resistance of Alumina Dispersed Y2O3-ZrO2 Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 1069-1074
Author(s):  
Xiao Ping Liang ◽  
Zheng Fang Yang ◽  
Q.M. Yuan ◽  
Zheng Guo Jin
Keyword(s):  
Wear Resistance ◽  
Normal Load ◽  
Tetragonal Zirconia ◽  
Abrasive Medium ◽  
Grain Sizes ◽  
Fine Grain ◽  
Uniform Microstructure ◽  
Naoh Solution ◽  
Tetragonal Zirconia Polycrystal ◽  
Effect Of Microstructure

The effect of microstructure on the wear resistance of two Al2O3 dispersed in ZrO2 matrix (ADZ) ceramics was investigated, Al2O3 dispersed in commercially co-precipitated 3mol% Y2O3-doped tetragonal zirconia polycrystal (CYADZ) and Al2O3 dispersed in mixed 3mol% Y2O3-doped tetragonal zirconia polycrystal (MYADZ). These materials were used as a pin sliding against a plate of polyurethane rubber (UR) in the presence of aqueous NaOH solution containing SiO2 as the abrasive medium at a sliding speed of 0.15m/s and a normal load of 100N. The results indicated that the CYADZ specimen had uniform microstructure and fine grain size, which accounted for its better abrasive wear-resistance than that of the MYADZ specimen with non-uniform microstructure and largely different grain sizes due to inhomogeneous distribution of Y2O3. The hardness and toughness of two ADZ specimens were close, but strength of the MYADZ specimen was lower than that of the CYADZ specimen, which indicated the defect was serious in the MYADZspecimen. The CYADZ specimen was characterized by plastic deformation and micro-ploughing, which the MYADZ specimen dominated by micro- cracking and brittle fracture.

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