Wear Resistance and XRD Analyses of CNiCrSiBO Coatings Obtained by Thermal Deposition on OLC45 Substrate

2014 ◽  
Vol 659 ◽  
pp. 16-21 ◽  
Author(s):  
Petru Avram ◽  
Marius Stelian Imbrea ◽  
Bogdan Istrate ◽  
Sorin Iacob Strugaru ◽  
Iulian Cucos ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Surface Engineering ◽  
Base Material ◽  
High Wear Resistance ◽  
Material Surface ◽  
Thermal Deposition ◽  
High Durability ◽  
New Material ◽  
Machine Elements ◽  
The Impact

In army industry are some of machine elements that are subjected to wear solicitations and must have a high wear resistance. The impact of their damage and also their maintenance costs are very high, that is why we proposed to improve their performances. Researches in surface engineering allow the obtaining of new systems of materials by coating the base material surface with other material having superior properties. In order to improve the machine elements durability, we proposed to obtain a new system of materials by thermal deposition. We have chosen the steel type OLC45 as base material and we coated it with CNiCrSiBO. We made the samples which we have analyzed by X-Ray Diffraction and we obtained the quality of the coating. The results showed that the new material has a better structure than the base material, and we can estimate a high durability of the machine elements coated.

Wear Resistance and XRD Analyses of CMoCuNiCrSiBO Coatings Obtained by Thermal Deposition on OLC45 Substrate

2014 ◽  
Vol 659 ◽  
pp. 10-15 ◽  
Author(s):  
Petru Avram ◽  
Marius Stelian Imbrea ◽  
Bogdan Istrate ◽  
Sorin Iacob Strugaru ◽  
Iulian Cucos ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Basic Material ◽  
X Ray Diffraction ◽  
Thermal Deposition ◽  
High Durability ◽  
New Material ◽  
Machine Elements ◽  
Coated Surfaces ◽  
Selection Of

Idlers are machine elements which are subjected to friction solicitations. The geometry, dimensions and weight can’t be modified that is why we decided to modify the contact surface by coating. We have chosen the steel type OLC 45 and we coated it with CMoCuNiCrSiBO by thermal deposition. The selection of these materials was made after a detailed study of the literature. After we obtained the samples, we subjected them to qualitative analyses SEM and XRD and to Quantitative analysis – wearing – destructive test where we obtained the friction coefficient between two coated surfaces [1]. We made the samples which we have analyzed by X-Ray Diffraction and we obtained the quality of the coating [2]. The results showed that the new material has a better structure than the basic material, and we can estimate a high durability of the machine elements coated. On friction test we have determined friction coefficient value.

Increasing in wear resistance of excavating machine elements

2020 ◽  
pp. 306-308
Author(s):  
V.S. Bochkov
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Abrasive Wear ◽  
Thermomechanical Treatment ◽  
Cold Work ◽  
Hadfield Steel ◽  
Outer Side ◽  
Viii And Ix ◽  
Machine Elements ◽  
The Impact

The relevance of the search for solutions to increase the wear resistance of bucket teeth of excavating machine type front shovel is analyzed. The reasons for the wear of the teeth are considered. It is determined that when excavating machines work for rocks of VIII and IX categories, impact-abrasive wear of the inner side of the teeth and abrasive external wear occurs. It is proved that the cold-work hardening of Hadfield steel (the teeth material), which occurs during the excavating machine teeth work in the rocks of VIII and IX categories, reduces the impact-abrasive wear rate on the inner side of the teeth and does not affect the abrasive wear of the outer. The methods for thermomechanical treatment of the outer side of the excavating machine tooth is proposed. It can increase the wear resistance of Hadfield steel (110G13L) up to 1.7 times and lead to the self-sharpening effect of the tooth due to equalization of the wear rate of the outer and inner parts of the tooth. The efficiency factor of thermomechanical treatment to reduce the of abrasive wear rate of Hadfield steel is experimentally proved.

Study of Tribological Behaviour of AA6351/SiC/Gr Hybrid Metal Matrix Composite using Taguchi Technique

2019 ◽  
Vol 11 (3) ◽  
Author(s):  
M. Vijaya ◽  
K. Srinivas ◽  
N.B.Prakash Tiruveedula
Keyword(s):  
Wear Resistance ◽  
Frictional Force ◽  
Metal Matrix ◽  
Testing Machine ◽  
Wear Testing ◽  
High Wear Resistance ◽  
Wear Property ◽  
Taguchi Technique ◽  
Tribological Behaviour ◽  
The Impact

Using stir-casting, the hybrid aluminium metal matrix composites are prepared with the reinforcement of SiC and graphite particulates by varying equally 2%, 4%, 6%, and 8% by weight. The wear and frictional force for the prepared specimens were investigated through pin on disc wear testing machine. Exercising ANOVA technique, the wear rate and coefficient of friction was accomplished with the impact of applied load, sliding speed and sliding distance. Using Taguchi technique, experiments have been performed depending on the design of experiments. For analysis of data L9 Orthogonal array was preferred. Wear resistance and frictional force were influenced majorly with the reinforcement of graphite. The morphology of the depleted surfaces and the wear fragments were analysed to recognize the wear property. Distinguished to other percentages of reinforcements, 6% wt. of SiC and 6% wt. of graphite has demonstrated high wear resistance.

Contact Wear Studies over Idlers Sprayed with Ni Al Si Powder Using Atmospheric Plasma Spraying Method

2014 ◽  
Vol 1036 ◽  
pp. 184-188
Author(s):  
Petru Avram ◽  
Bogdan Istrate ◽  
Marius Stelian Imbrea ◽  
Catalina Axinte ◽  
Constantin Paulin ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
Surface Engineering ◽  
Steel Substrate ◽  
Mining Industry ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Basic Material ◽  
Material Surface ◽  
Wear Properties ◽  
Machine Elements

In military and mining industry are many machine elements – in our case idlers (for tanks, conveyors, and any others machineries which are using transmissions system which are subjected of coverage with a high wear rezistance powder. These machine elements (idlers) must have high wear proprieties, because the functionality of the entire transmissions systems depends on them. Also the maintenance costs are very high, that is why we proposed to studies how to improve the performances of this machine elements. Researches in surface engineering allow the obtaining of new systems of materials by coating the basic material surface with other material having superior high wear properties. In order to improve the machine elements durability, wear resistance, friction, we proposed to obtain a new system of materials using Atmospheric Plasma Spraying – with Sulzer 9MCE equipment. We have chosen the steel type 34CrNiMo6, MOCN class, STAS 691 - 880 as basic material and we coated it with NiAlSi powder. We made the samples and we tested them. The analysis has been made with Tribometre, which produces some data which link us to a high wear rezistance.The NiAlSi coating deposited on steel substrate is dense and very tought. The results showed that the new material has a better microstructure than the basic material and its physical and mechanical properties have been improved.

scholarly journals High-carbon steel: microstructure and abrasive wear resistance of heat affected zone after welding with fast cooling

2021 ◽  
Vol 99 (1) ◽  
pp. 59-65
Author(s):  
M. Brykov ◽  
◽  
V. Efremenko ◽  
M. Osipov ◽  
A. Kapustyan ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Heat Affected Zone ◽  
High Carbon Steel ◽  
Base Material ◽  
Abrasive Wear Resistance ◽  
High Wear Resistance ◽  
Initial Structure ◽  
High Carbon ◽  
Fast Cooling

The goal of this work is to estimate the abrasive wear resistance of heat affected zone (HAZ) after welding high-carbon low-alloy steel 120Mn3Si2 with fast cooling. The following benchmark data were used: microstructures of HAZ of 120Mn3Si2 steel after welding with cooling in water; abrasive wear resistance of different microstructure constituents of 120Mn3Si2 steel in two-body abrasive wear conditions. It is shown that high abrasive wear resistance of material in HAZ is provided in the vicinity of fusion line. The reason is unstable retained austenite which appears in HAZ as a result of quenching at fast cooling right after welding. The wear resistance of material in HAZ is altered by microstructural changes from austenite to austenite+martensite and finally martensite. The martensitic zone is about 0.5 mm wide and it is followed by zone of tempering of initial structure of steel. Zone of tempering is 1.5-2.0 mm wide and is the only zone of low abrasive wear resistance in HAZ of 120Mn3Si2 steel welded with fast cooling. Welding of 120Mn3Si2 steel with fast cooling in water results in welding joints which have as high wear resistant as the base material or even higher. This enables manufacturing flat welded elements with high wear-resistance and large surface area

Lubrication of DLC and TiN Coatings With Two Ionic Liquids Used as Neat Lubricant and Oil Additive

2011 ◽  
Author(s):  
A. Hernandez Battez ◽  
D. Blanco Alonso ◽  
R. Gonzalez Rodriguez ◽  
J. L. Viesca Rodriguez ◽  
A. Fernandez-Gonzalez ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Cutting Tools ◽  
High Stress ◽  
High Speed Steel ◽  
High Wear Resistance ◽  
Tin Coatings ◽  
Machine Elements ◽  
Mixed Lubrication Regime ◽  
Forming Tools

Thin hard physical vapour deposited (PVD) coatings are today frequently used in order to improve the tribological performance of forming tools, cutting tools, and machine elements [1]. PVD TiN coating is widely used in high-speed steel cutting tools. Studies on the friction, wear characteristics and failure mechanisms of this coating have shown that it can reduce wear and diminish the failure of components. This coating frequently offers good corrosion protection and surface finish, high wear resistance and low coefficient of friction. On the other hand, PVD DLC (diamond-like carbon) coating provides a low friction and a high sliding wear resistance to enhance the tribological behavior and the durability of running components. DLC is becoming widely used as surface coating for machine components in lubricated systems, especially in the automotive industry. DLC coatings are nowadays frequently used in applications under high stress and/or under boundary or mixed lubrication regime and the range of use for these coatings keep growing rapidly.

Toughening Study on High Chromium Cast Iron Liner Plates of HZS Series Commercial Concrete Mixing Plant

2011 ◽  
Vol 179-180 ◽  
pp. 1338-1341
Author(s):  
Jiang Liu ◽  
Jun Fu
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Impact Toughness ◽  
Normal Operation ◽  
High Wear Resistance ◽  
Liner Material ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
The Impact ◽  
Chromium Cast Iron

Because of high wear resistance and low cost, high chromium cast iron liner plate is the most commonly used liner for HZS series concrete mixing station at present. However, in normal operation, the high-chromium cast iron liner produced by conventional casting process is easy to crack at its corners. We found that the cracking reasons of this type of liner plate are mainly the lower cast impact toughness, slightly higher hardness, and there has not gotten a good matching between the hard particles and the matrix organizations. Thus we used the secondary heat treatment to slightly reduce the hardness and increase the impact toughness of cast iron liner plate, which can improve the wear resistance and impact resistance of the liner material to extend the service life of these cast iron liners.

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