INFLUENCE OF VACUUM CHEMICAL AND THERMAL PROCESSING ON WEAR RESISTANCE OF VKS-7 AND VKS-10 STEELS

There are a variety of opinions regarding the influence of retained austenite and carbides on the properties exhibited by carbonitrided steels. In this paper, the development of a model marking relationship between phase composition, and properties of hardened carbonitrided steel has been presented. A summary of the impact of structure on properties is provided in Table 1. In the study reported here, the impact of thermal processing conditions on retained austenite and carbides was examined for carbonitrided and hardened 20 (C22), 20H (20Cr4), 15HN (17CrNi6-6) and 16HG (16MnCr5) steels. The models that are reported were experimentally validated. In particular, the results obtained for structure with respect to hardness and abrasive wear resistance were discussed for carbonitrided and hardened 20H (20Cr4) steel.

Download Full-text

THE INFLUENCE OF THERMAL PROCESSING ON THE STRUCTURE AND WEAR-RESISTANCE OF PERLITE-CLASS STEELS

Vektor nauki Tol yattinskogo gosudarstvennogo universiteta ◽

10.18323/2073-5073-2018-1-83-89 ◽

2018 ◽

pp. 83-89

Author(s):

M. A. Filippov ◽

◽

G. A. Yagudin ◽

V. V. Legchilo ◽

S. Kh. Estemirova ◽

...

Keyword(s):

Wear Resistance ◽

Thermal Processing

Download Full-text

INCREASING OF WEAR RESISTANCE OF LINEAR BLOCK-POLYURETHANES BY THERMAL PROCESSING METHODS

MM Science Journal ◽

10.17973/mmsj.2021_10_2021018 ◽

2021 ◽

Vol 2021 (4) ◽

pp. 4731-4735

Author(s):

ANTON PANDA ◽

◽

VOLODYMYR MYKOLAJOVYCH ANISIMOV ◽

VOLODYMYR VOLODYMYROVYCH ANISIMOV ◽

KONSTANTIN DYADYURA ◽

...

Keyword(s):

Wear Resistance ◽

Thermal Processing ◽

Water Medium ◽

Friction Contact ◽

Processing Methods ◽

Thermal Fields ◽

Hydrolysis Process ◽

Linear Block

A significant imperfection of parts made from linear block-polyurethanes under conditions of friction contact in the presence of water medium is an intensification of hydrolysis processes and reduction of bulk strength. In order to slow down the hydrolysis process, samples of the polyurethanes were subjected to three types of thermal impacts: thermal processing during some time, infrared and laser irradiations. It has been established that processing in thermal fields of different intensity allows 5-10 times increase of wear resistance of these materials during friction in water medium.

Download Full-text

Application of TEM to Deformation, Wear, and Fracture of Ceramics

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100052377 ◽

1974 ◽

Vol 32 ◽

pp. 472-473

Author(s):

B. J. Hockey

Keyword(s):

Wear Resistance ◽

High Temperature ◽

Mechanical Behavior ◽

Brittle Materials ◽

High Temperature Strength ◽

Wide Range ◽

Corrosive Environments ◽

Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Download Full-text

Model-Based Control for Rapid Thermal Processing of Semiconductor Wafers

IEEJ Transactions on Industry Applications ◽

10.1541/ieejias.131.159 ◽

2011 ◽

Vol 131 (2) ◽

pp. 159-165 ◽

Cited By ~ 3

Author(s):

Ryota Takagi ◽

Kang-Zhi Liu

Keyword(s):

Thermal Processing ◽

Rapid Thermal Processing ◽

Model Based Control ◽

Model Based

Download Full-text

Abrasive wear of polymer/steel gear drives

Progress in Agricultural Engineering Sciences ◽

10.1556/progress.4.2008.1 ◽

2008 ◽

Vol 4 (1) ◽

pp. 1-26

Author(s):

Gábor Kalácska

Keyword(s):

Wear Resistance ◽

Abrasive Wear ◽

Material Selection ◽

Solid Particles ◽

Soil Types ◽

General View ◽

Modern Engineering ◽

Clean Environment ◽

Engineering Polymers ◽

Plastic Gears

Research was performed on the friction, wear and efficiency of plastic gears made of modern engineering polymers and their composites both in a clean environment (adhesive sliding surfaces) and in an environment contaminated with solid particles and dust (abrasive), with no lubrication at all. The purpose is to give a general view about the results of abrasive wear tests including seven soil types as abrasive media. At the first stage of the research silicious sand was applied between the meshing gears and the wear of plastic and steel gears was evaluated and analyzed from the point of different material properties (elongation at break, hardness, yield stress, modulus of elasticity) and its combinations. The different correlations between the experienced wear and material features are also introduced. At the second stage of the project the abrasive sand was replaced with different physical soil types. The abrasive wear of gears is plotted in the function of soil types. The results highlight on the considerable role of physical soil types on abrasive wear resistance and the conclusions contain the detailed wear resistance. The results offer a new tribology database for the operation and maintenance of agricultural machines with the opportunity of a better material selection according to the dominant soil type. This can finally result longer lifetime and higher reliability of wearing plastic/steel parts.

Download Full-text