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.

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.

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 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.

DELTALLOY 4032

Alloy Digest ◽  
1998 ◽  
Vol 47 (4) ◽  
Keyword(s):  
Wear Resistance ◽  
Thermal Expansion ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Surface Finish ◽  
Coefficient Of Thermal Expansion ◽  
Single Point ◽  
High Strength ◽  
Corrosion And Wear

Abstract Deltalloy 4032 has good machinability and drilling characteristics when using single-point or multispindle screw machines and an excellent surface finish using polycrystalline or carbide tooling. The alloy demonstrates superior wear resistance and may eliminate the need for hard coat anodizing. Deltalloy 4032 is characterized by high strength and a low coefficient of thermal expansion. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion and wear resistance as well as machining and surface treatment. Filing Code: AL-347. Producer or source: ALCOA Wire, Rod & Bar Division.

TRIBALOY ALLOY T-900

Alloy Digest ◽  
1996 ◽  
Vol 45 (10) ◽  
Keyword(s):  
Wear Resistance ◽  
Crack Resistance ◽  
Base Alloy ◽  
Corrosion And Wear ◽  
Laves Phase ◽  
Preheat Temperature ◽  
Corrosion Resistant ◽  
Cobalt Base Alloy ◽  
Cobalt Base

Abstract Tribaloy alloy T-900 is a cobalt-base alloy derived from an alloy family originally developed by DuPont. Excessive amounts of molybdenum and silicon induce the formatin during solidification of a hard and corrosion-resistant intermetallic coumpound, known as Laves phase. This alloy had improved crack resistance and a lower preheat temperature compared with Tribaloy T-800 (Alloy Digest Co-99, September 1996). This datasheet provides information on composition, microstructure, and hardness. It also includes information on corrosion and wear resistance. Filing Code: CO-100. Producer or source: Stoody Deloro Stellite Inc.

ENPLATE NI-423

Alloy Digest ◽  
1986 ◽  
Vol 35 (11) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
High Speed ◽  
Chemical Reduction ◽  
Electronic Devices ◽  
Electroless Nickel ◽  
Heat Treating ◽  
Corrosion And Wear ◽  
Phosphorus Alloy

Abstract ENPLATE NI-423 is a nickel-phosphorus alloy deposited by chemical reduction without electric current. It is deposited by a stable, relatively high-speed functional electroless nickel process that produces a low-stress coating with good ductility and excellent resistance to corrosion. Its many uses include equipment for chemicals and food, aerospace components, molds and electronic devices. This datasheet provides information on composition, physical properties, and hardness. It also includes information on corrosion and wear resistance as well as heat treating, machining, joining, and surface treatment. Filing Code: Ni-343. Producer or source: Enthone Inc..

OLIN C197

Alloy Digest ◽  
1999 ◽  
Vol 48 (1) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Wear Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Performance ◽  
Corrosion And Wear ◽  
Contact Forces ◽  
High Current ◽  
Lower Strength ◽  
Current Carrying Capability

Abstract Olin C197 is a second-generation high performance alloy developed by Olin Brass. It has a strength and bend formability similar to C194 (see Alloy Digest Cu-360, September 1978), but with 25% higher electrical and thermal conductivity. High conductivity allows C197 to replace brasses and bronzes in applications where high current-carrying capability is required. Also, the strength of C197 provides higher contact forces when substituted for many lower strength coppers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion and wear resistance as well as forming and joining. Filing Code: CU-627. Producer or source: Olin Brass.

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