Wear Resistance of Graphitized Steels

2013 ◽  
Vol 58 (3) ◽  
pp. 813-816 ◽  
Author(s):  
S. Byelikov ◽  
I. Volchok ◽  
I. Akimov
Keyword(s):  
Weight Loss ◽  
Wear Resistance ◽  
Copper Content ◽  
Sliding Friction ◽  
Metal Base ◽  
Factors Affecting ◽  
Heat Treated ◽  
Main Factors ◽  
Object Of Study ◽  
Graphite Inclusions

Abstract Heat-treated graphitized steels with different carbon, silicon and copper contents have been the object of study. The influence of the composition on the structure and wear resistance (weight loss of the specimen) of graphitized steels (after hardening and tempering) under the conditions of metal to metal dry sliding friction with the use of Amsler-type friction machines, has been investigated in this work. Research results have shown that the main factors affecting wear resistance of graphitized steels have been not only their metal base hardness, but the quantity, shape and distribution of graphite inclusions uniformity in the structure of such steels as well. A regression dependence of the quantity of specimen’s weight loss on carbon, silicon and copper content has been obtained in the work. The highest wear resistance was pertained by the steel having the following content: 1.60. . . 1.70%C; 2.20. . . 2.30%Si; 0.80. . . 0.90%Cu; 0.60. . . 0.70%Mn; 0.15. . . 0.18%Cr; 0.22. . . 0.25%Al; up to 0.015%S and 0.024%P.

scholarly journals Selection of the chemical composition of steels and their thermal hardening mode using a computer program

2021 ◽  
pp. 59-65
Author(s):  
D. M. Berdiev ◽  
M. A. Uмаrоvа ◽  
A. A. Yusupov
Keyword(s):  
Wear Resistance ◽  
Chemical Composition ◽  
Computer Program ◽  
Sliding Friction ◽  
Thermal Hardening ◽  
Abrasive Particles ◽  
Density Of Dislocations ◽  
Heat Treated ◽  
Final Tempering ◽  
Selection Of

The relationships between the parameters of the structure of heat‑treated steels and their abrasive wear resistance are established. At all temperatures of the final tempering of hardened steel, there is a direct relationship between its structure parameters (the number of elements in a solid solution, the density of dislocations, the size of cementite particles and the intercementite distance) and wear resistance when sliding friction against loose abrasive particles. A computer program has been developed to select the chemical composition of the steel grade and methods of thermal hardening in order to ensure the required wear resistance.

scholarly journals Design and technological provision of wear resistance of elastomer surface of rubber-cord casings of damping devices

2021 ◽  
pp. 25-28
Author(s):  
V. G. Churankin ◽  
◽  
A. V. Lyamtsev ◽  
V. V. Derkach ◽  
◽  
...  
Keyword(s):  
Wear Resistance ◽  
Chemical Composition ◽  
Shock Absorber ◽  
Sliding Friction ◽  
Rolling Friction ◽  
Solid Base ◽  
Cover Layer ◽  
Deformation Component ◽  
Main Factors ◽  
Pneumatic Shock

Two main factors are considered that determining the friction between non-lubricated surfaces of an elastomer and a solid base during their relative motion. The first one is adhesion in the areas of real (actual) catalysis and the second factor is the deformation component, which is due to the delay of recovery of the elastomer after the irregularity is introduced and it is called the hysteresis component of friction. One of the main problems of increasing the resource of pneumatic dampers is minimizing the wear of the covering layer of the rubber-cord casing (RCC). The wear of the RCC is due to the fact that sliding friction occurs in the process of contact between the metal surface and the surface of the RCC, as a result of which the cover layer of the RCC (in some cases with the first cord layer) wears out, depending on the chemical composition of the rubber and the features of the operation of the pneumatic shock absorber. In order to minimize the wear of rubber, it is proposed to change the design of the pneumatic damper so that rolling friction dominates in the contact between the surfaces of rubber and metal

scholarly journals OPERATIONAL PROPERTIES OF CONSTRUCTION MATERIALS WITH PROTECTIVE COATINGS OBTAINED UNDER NON-STATIONARY TEMPERATURE CONDITIONS

2020 ◽  
pp. 121-126
Author(s):  
Середа Д.Б.
Keyword(s):  
Weight Loss ◽  
Wear Resistance ◽  
Sliding Friction ◽  
Protective Coatings ◽  
Construction Materials ◽  
Boron Doping ◽  
Chromium Alloy ◽  
Isothermal Conditions ◽  
Titanium Doping ◽  
Temperature Conditions

The structure and phase composition of chromium-alloy coatings consisting of the following phases are investigated in the work: when boron doping the coating on brass C68700 consists of phases: Cu3Al, CuB, CuZn2 and zones of solid solution Cr, Al, B in copper; during titanium doping Cu3Al and CuAl phases in the transition zone: phases CuTi and CuTi2 When tested on A572 steels, in conditions of sliding friction, the best wear resistance among the considered protective coatings are doped with titanium and boron. Their wear resistance is 1,8 – 2,1 times higher than that of coatings obtained under isothermal conditions. Under non-stationary temperature conditions, the microhardness reaches the following values: when doped with boron H100 = 16500 – 17500 MPa, when doped with silicon H100 = 13500 – 14500 MPa, when doped with titanium H100 = 15000 – 16000 MPa. The obtained results correlate with the indicators of wear resistance. A comparative analysis of the corrosion resistance of protective coatings obtained under non-stationary temperature conditions and isothermal conditions shows that they have a weight loss of 1.7–2.1 times less. It was found that when tested in a 30% aqueous solution of sulfuric acid, all protective coatings have good stability. Thus, when doped with boron, the weight loss is 15,2 g/m2, при when doped with silicon - 10,8 g/m2,  and when doped with titanium - – 9,9 g/m2.

Abrasive Wear on Heat-Treated Recycling Aluminium AA6061 of Various Reinforcement Materials through Powder Metallurgical Process

2017 ◽  
Vol 909 ◽  
pp. 15-20 ◽  
Author(s):  
Ahmed Sahib Mahdi ◽  
Mohammad Sukri Mustapa ◽  
Mohd Radzi Mohamed Yunus ◽  
Mohd Rasidi Ibrahim ◽  
Muhammad Irfan Ab Kadir ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Weight Loss ◽  
Wear Resistance ◽  
Wear Test ◽  
Metallurgical Process ◽  
Micro Hardness ◽  
Powder Metallurgical Process ◽  
Heat Treated ◽  
Pin On Disc ◽  
Is Value

The present study is aimed at investigating wear resistance of the heat treated of recycled aluminium type AA6061 for various reinforced methods (heat treatment reinforced by graphite and silica) using pin on disc method. In the study, weight loss value of the recycled chip of AA6061 was observed. Eight specimens were taken for the wear test. The results showed that the wear resistance increased for specimens treated by heat treatment. This increase in wear resistance is value of micro hardness which increased with the increase of the percentage of silica reinforcement. Thus, the weight loss decreased and the volume loss also decreased.

scholarly journals THEORETICAL OVERVIEW OF THE FACTORS AFFECTING WINE PRODUCTION

2020 ◽  
Vol 18 (Suppl.1) ◽  
pp. 619-624
Author(s):  
N. Petrova ◽  
A. Stefanova
Keyword(s):  
Human Factor ◽  
Production Quality ◽  
Wine Production ◽  
Factors Affecting ◽  
Factors Influencing ◽  
The Subject ◽  
Main Factors ◽  
Object Of Study ◽  
Theoretical Overview

This paper reviews the authors’ theoretical and empirical views on the factors influencing wine production. The theoretical framework indicates the presence of many factors affecting the vine growing and winemaking enterprises. The indicators are summarised in terms of terroir, the competitiveness of the enterprise, its ability to innovate, the production quality and the quality of wine product intended for the market. The analysis assists in highlighting the following more important conclusions: evolution of the object of study from an enterprise to a whole supply chain; regarding the subject of study, many factors that affect the object, combined into leading factors and indicators characterising the factors, can be identified; the terroir and the human factor are the main factors influencing the quality of the wine produced.

Recent Rapid Climate Changes in Antarctic and their Influence on Low Diversity Ecosystems

2010 ◽  
Vol 17 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Katarzyna J. Chwedorzewska
Keyword(s):  
Environmental Variables ◽  
Climate Changes ◽  
Biological Significance ◽  
Global Changes ◽  
Factors Affecting ◽  
Low Diversity ◽  
Main Factors ◽  
The Antarctic ◽  
High Diversity ◽  
Temperature Water

ABSTRACTThe geographic position, astronomic factors (e.g. the Earth’s maximum distance from the Sun during winter), ice cover and altitude are the main factors affecting the climate of the Antarctic, which is the coldest place on Earth. Parts of Antarctica are facing the most rapid rates of anthropogenic climate change currently seen on the planet. Climate changes are occurring throughout Antarctica, affecting three major groups of environmental variables of considerable biological significance: temperature, water, UV-B radiation.Low diversity ecosystems are expected to be more vulnerable to global changes than high diversity ecosystems

KAISER ALUMINUM ALLOY 4026

Alloy Digest ◽  
2003 ◽  
Vol 52 (10) ◽  
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Sliding Friction ◽  
High Strength ◽  
Heat Treating ◽  
Kaiser Aluminum ◽  
Friction Resistance

Abstract Kaiser Aluminum alloy 4026 has high strength and good wear resistance, as well as galling resistance. It was developed for sliding friction resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on heat treating. Filing Code: AL-385. Producer or source: Tennalum, A Division of Kaiser Aluminum.

COLUMBIA S6

Alloy Digest ◽  
1985 ◽  
Vol 34 (8) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Heat Treating ◽  
Steel Company ◽  
High Hardenability ◽  
Heat Treated ◽  
Strength And Toughness

Abstract COLUMBIA S6 is a silicon-manganese shock-resisting tool steel with fairly high hardenability. It offers superior toughness and wear resistance when compared to conventional shock-resisting steels heat treated to Rockwell C 54 to 56. For optimum strength and toughness, parts should be tempered within the range 400 to 600 F. Among its many applications are shear blades, punches, hand chisels and pneumatic tools. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-445. Producer or source: Columbia Tool Steel Company.

TATMO V

Alloy Digest ◽  
1985 ◽  
Vol 34 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
High Speed ◽  
Heat Treating ◽  
Steel Company ◽  
Treated Steel ◽  
Heat Treated ◽  
Red Hardness ◽  
Edge Toughness ◽  
Heat Treated Steel

Abstract TATMO-V is a high-speed tool steel with superior abrasion resistance because of its high contents of carbon and vanadium. It is an excellent choice for premium grade tools which require an outstanding balance of red hardness, edge toughness, and wear resistance. Increased tool life of Tatmo-V is noted in the machining of semi-hard, heat-treated steel pats (300-350 Brinell). This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-434. Producer or source: Latrobe Steel Company.

CANNON-MUSKEGON 8620

Alloy Digest ◽  
1973 ◽  
Vol 22 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Alloy Steel ◽  
Investment Casting ◽  
Silicon Content ◽  
Heat Treating ◽  
Low Carbon ◽  
Heat Treated ◽  
Casting Industry ◽  
Small Parts

Abstract CANNON-MUSKEGON 8620 is a low-carbon triple-alloy steel capable of being carburized for wear resistance or heat treated for toughness. This steel is suitable for many engineering applications, and is used in large quantities in the investment casting industry for small parts. A higher silicon content is permissible in this steel than in AISI 8620 (wrought) alloy steel. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, joining, and surface treatment. Filing Code: SA-299. Producer or source: Cannon-Muskegon Corporation.

Sign in / Sign up

Export Citation Format

Share Document