Laser Modification: Increasing the Wear Resistance of Friction Surfaces

2020 ◽  
Vol 836 ◽  
pp. 104-110
Author(s):  
V.I. Shastin ◽  
S.K. Kargapol’tsev
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Theoretical Model ◽  
Laser Processing ◽  
Microstructural Analysis ◽  
Friction Units ◽  
Special Surface ◽  
Machine Parts ◽  
Friction Surfaces ◽  
Tribological Parameters

The article deals with topical issues of studying the physical, mechanical and tribological parameters of the surface layer of machine parts subjected to laser processing. Various options for modifying mating surfaces are evaluated and analyzed. The data of microstructural analysis and indicators of wear resistance are presented. A theoretical model of the wear of heat-strengthened surfaces is proposed, explaining the mechanism for increasing their wear resistance as a result of homogenization of the microstructure of a special surface layer with increased bearing capacity. It is experimentally confirmed that the greatest wear resistance is observed in friction units during mutual modification of mating surfaces.

scholarly journals Technology to Increase Hydrocarbon Wear Resistance of Friction Units of Hydrogen Aggregates

2019 ◽  
Vol 297 ◽  
pp. 09001 ◽  
Author(s):  
Mikhail Shalygin ◽  
Sergei Kuznetsov
Keyword(s):  
Wear Resistance ◽  
Steel Surface ◽  
Friction Pair ◽  
Dehydration Process ◽  
Diffusion Capacity ◽  
Friction Units ◽  
Surface Irregularities ◽  
Friction Surfaces ◽  
Technological Methods ◽  
Wear Tests

The causes of hydrogen wear of the friction surfaces involved in hydrocarbon transfer and distillation processes are considered. Some technological methods for reducing the hydrogen wear of parts and friction units operating in hydrocarbon environment are given. A comprehensive technology for obtaining the properties of the surface layer is proposed, which provides an increase in the wear resistance of a friction pair and smoothing the surface roughness. The increase in wear resistance is based on several mechanisms: (1) decreasing biographical hydrogen due to the dehydration process; (2) smoothing surface irregularities by saturating the surface with silicon; (3) reducing the diffusion capacity of the steel surface caused by diffusion siliconizing; (4) reducing grain size of the material. Comparative wear tests were carried out, which showed the effectiveness of the proposed methods.

scholarly journals LOCAL ALLOYING OF TITANIUM COPPER

2020 ◽  
pp. 12-16
Author(s):  
V. Shmorgun ◽  
O. Slautin ◽  
A. Serov ◽  
R. Novikov
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Surface Layer ◽  
Phase Composition ◽  
Intermetallic Compounds ◽  
Laser Processing ◽  
Titanium Surface ◽  
Explosion Welding ◽  
Copper Plating ◽  
Fixed Abrasive

The influence of the parameters of laser processing of copper plating deposited by explosion welding and subsequent rolling on the titanium surface on the structure and phase composition of the coatings is studied. It is shown that alloying titanium with copper leads to the formation of intermetallic compounds (titanium cuprides) in the remelting zone, which contributes to a significant increase in the wear resistance of the surface layer. When tested for wear on a fixed abrasive, the wear resistance of the coating is 2 times higher than that of VT1-0 titanium alloy.

Using the Diffusion Saturation Technology for the Surface of Different Steel Products from Melts of Low-Melting Metals

2020 ◽  
Vol 836 ◽  
pp. 36-40
Author(s):  
S.N. Dzhabbarov ◽  
E.I. Pryakhin
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Multicomponent Diffusion ◽  
Modern Method ◽  
Refractory Metals ◽  
Corrosion And Wear ◽  
Diffusion Saturation ◽  
Machine Parts

The article discusses the modern method of increasing the corrosion and wear resistance of machine parts by diffusion saturation from the environment of fusible melts. A review of ongoing studies is on the multicomponent diffusion saturation of steel samples, including refractory metals. The results of the studies will be the basis for the formation of a coating with increased resistance to corrosion and strength of the surface layer.

Wear-Resistance Increase of Friction Surfaces of Steel Machine Parts by Electro-Mechanical Hardening

2019 ◽  
Vol 49 (11) ◽  
pp. 800-805
Author(s):  
A. O. Gorlenko ◽  
S. V. Davydov ◽  
M. Yu. Shevtsov ◽  
D. A. Boldyrev
Keyword(s):  
Wear Resistance ◽  
Resistance Increase ◽  
Steel Machine ◽  
Machine Parts ◽  
Friction Surfaces

Technological quality assurance of the surface layer and operational properties of machine parts by electroerosion treatment

2021 ◽  
Vol 2021 (11) ◽  
pp. 30-37
Author(s):  
Sergey S'yanov
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Corrosion Rate ◽  
Endurance Limit ◽  
Mechanical Parameters ◽  
Technological Support ◽  
Technological Quality ◽  
Machine Parts ◽  
Surface Layer Quality

Dependences for determining geometric, physical and mechanical parameters of the surface layer quality, wear resistance, corrosion rate and endurance limit depending on the modes and conditions of electroerosion treatment of machine parts have been given. These dependences allow determining optimal modes and conditions of electroerosion treatment to ensure the required parameters of the quality of the surface layer (with a two–stage approach - design and technological support of operational properties), wear resistance, corrosion rate and endurance limit (with a single-stage approach - direct technological support).

Islet Nitriding of Product Surfaces Made from Alloy Steel

2017 ◽  
Vol 265 ◽  
pp. 215-220 ◽  
Author(s):  
N.K. Krioni ◽  
A.A. Mingazheva ◽  
A.Y. Kononova ◽  
A.D. Mingazhev ◽  
V.A. Gafarova
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
New Technologies ◽  
Nitrided Layer ◽  
Composite Layer ◽  
Thermochemical Treatment ◽  
High Wear Resistance ◽  
Thermochemical Method ◽  
Machine Parts ◽  
Modern Machine

One of the most urgent problems of modern machine engineering is to increase the wear resistance of machine parts. The appearance of new technologies of parts strengthening treatment and improvement of the existing ones, especially the technologies based on thermochemical method, remain quite sought-after and are successfully used to improve the operational properties of the parts. Parts surface layer nitriding as the most common method of improving the service life and reliability of the modern machine parts got a new quality due to the use of ion-plasma processes. At the same time, the ever-increasing requirements for performance of machines and devices of different purposes, intensification and tightening of the conditions for their operation requires the creation of new nitriding technologies to provide a range of required properties of parts surface materials. This article is dedicated to the development and research of new nitriding technologies for alloyed steel parts. The aim of the proposed nitriding technology is to provide a composite layer combining high wear resistance and ductility of surface layer material. A feature of the nitriding technology is creating the conditions of processes of thermochemical treatment of parts, making it possible to form the islet nitrided layer.

scholarly journals Surface Layer Properties after Successive EDM or EDA and Then Superficial Roto-Peen Machining

2012 ◽  
Vol 2012 ◽  
pp. 1-12
Author(s):  
Agnieszka Dmowska ◽  
Bogdan Nowicki ◽  
Anna Podolak-Lejtas
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Fatigue Strength ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Cold Work ◽  
Microhardness Distribution ◽  
Machine Parts ◽  
Electrical Discharge Alloying ◽  
Work Treatment

The paper presents the results of the influence of basic electrical discharge machining EDM parameters and electrical discharge alloying EDA parameters on surface layer properties and on selected performance properties of machine parts after such machining but also the influence of superficial cold-work treatment applied after the EDM of EDA on modification of these properties. The investigations included texture of the surface, metallographic microstructure, microhardness distribution, fatigue strength, and resistance to abrasive wear. It was proved that the application of the roto-peen after the EDM and the EDA resulted in lowering roughness height up to 70%, the elevation of surface layer microhardness by 300–700 μHV, and wear resistance uplifting by 300%.

scholarly journals APPLICATION OF PLASMA SILICATION METHOD TO WEAR RESISTANCE OF THE PART

2019 ◽  
pp. 129-135
Author(s):  
Р. Романцов ◽  
R. Romancov ◽  
И. Серых ◽  
I. Serykh ◽  
Е. Чернышева ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
High Efficiency ◽  
Cost Effective ◽  
Reliable Operation ◽  
Advanced Technologies ◽  
Inner Surface ◽  
Machine Parts ◽  
Save Energy ◽  
Modern Technologies

Modern technologies are the most important component for any state. Today, advanced technologies allow to create any mechanisms at the level of atoms and molecules. For the production of machines, aggregates and their individual components, new nanomaterials and nanotechnologies are used, which reduce friction repeatedly and with high efficiency, protect parts from damage, save energy and increase the reliability of machine parts as a whole. Virtually in any mechanism, some parts focus on the main load. In this study, such a detail is the steel clamping collet 65G. A method of plasma siliconizing is proposed for hardening its inner surface. The raise of this characteristics will allow to increase its service life, and therefore will ensure more reliable operation of both a separate mechanism and production as a whole. This allows the enterprise to become cost-effective and competitive. In this paper, the magnitude of the effect of the silicon atoms introduction into the surface layer of a part on wear resistance and durability is investigated. Research and subsequent processing of the results using Statistica software for statistical analysis shows an increase in the strength characteristics by 2.6 times.

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