Increasing surface wear resistance of engines by nanosized carbohydrate clusters when using ethanol motor fuels

2021 ◽  
pp. 89-99
Author(s):  
Olga O. Haiday ◽  
Volodymir S. Pyliavsky ◽  
Yevgen V. Polunkin ◽  
Yaroslav O. Bereznytsky ◽  
Olexandr B. Yanchenko ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Surface Wear ◽  
Motor Fuels

On enhancing surface wear resistance via rotating grains during selective laser melting

2020 ◽  
Vol 36 ◽  
pp. 101583 ◽  
Author(s):  
Y. Yang ◽  
X. Li ◽  
M.M. Khonsari ◽  
Y. Zhu ◽  
H. Yang
Keyword(s):  
Wear Resistance ◽  
Selective Laser Melting ◽  
Surface Wear ◽  
Laser Melting

Modifying of the Surface of Products from Cast Iron as the Element of Production Modernization

2020 ◽  
Vol 299 ◽  
pp. 588-593
Author(s):  
Nataliia Vodolazskaya ◽  
Olga Sharaya
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Saturation Temperature ◽  
Thermochemical Treatment ◽  
Structural Condition ◽  
Surface Wear ◽  
Layer Depth ◽  
Cast Irons ◽  
Process Duration ◽  
Surface Impregnation

The way of solving the problem of surface wear of products from cast iron due to development of technological processes of its strengthening treatment is offered in this article. Receiving the hardened skins is reached by purposeful formation of the set structural condition of metal by methods of surface impregnation, i.e., modifying. Results of researches on thermochemical treatment of cast irons of grades EN-GJL-250, EN-JS1060 are presented The micro-structural analysis showed that with rising the saturation temperature and increasing the process duration the layer depth cartbonitration increases. Studying the samples for wear resistance carried out on stand ММ 295 showed that for grade EN-GJL-250 it increased 2,2 times, and for grade EN-JS1060 – 3 times as compared to the initial (non-modified) state. Experimental-industrial tests of products of cast iron (model accessory, parts of homogenizing pumps) after carbonitration permitted to state 2-4 times of its surface.

Enhanced Wear Resistance of Al-15Si and ZK60-1Y Mg Alloys Induced by High Current Pulsed Electron Beam Treatment

2011 ◽  
Vol 189-193 ◽  
pp. 1204-1207 ◽  
Author(s):  
Bo Gao ◽  
Yi Hao ◽  
Gan Feng Tu ◽  
Shi Wei Li ◽  
Sheng Zhi Hao ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Electron Beam ◽  
Rapid Heating ◽  
Mg Alloys ◽  
Surface Wear ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Heating And Cooling ◽  
Melted Layer ◽  
Modification Of Materials

High current pulsed electron beam (HCPEB), a novel high-power energetic beam technology, has been developed as a useful tool for surface modification of materials. In the present work, the effect of HCPEB treatment on microstructure and wear resistance of Al-15Si and ZK60-1Y Mg alloys was investigated. The results show that a supersaturated solid solution of (Al) and (Mg) is formed on top surface of melted layer induced by rapid heating and cooling during HCPEB process. In addition, the melted layer of approximately 5~11μm thickness is obtained on the ZK60-1Y Mg alloy surface. Wear resistance of Al-15Si and ZK60-1Y Mg alloys are significantly improved after HCPEB treatment. It is demonstrated that HCPEB technology has a good application future in enhancing surface properties of Al-Si and Mg alloys.

Surface wear resistance properties of Ta+N implanted W18Cr4V high speed steel

2009 ◽  
Vol 19 (1) ◽  
pp. 133-136 ◽  
Author(s):  
Wei CAO ◽  
Bing-wen LI ◽  
Chu-wen GUO ◽  
Xin-yuan MAO ◽  
Qin-qin MA
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
High Speed Steel ◽  
Surface Wear

scholarly journals Analysis and Prediction of Wear Performance of Different Topography Surface

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5056
Author(s):  
Ben Wang ◽  
Minli Zheng ◽  
Wei Zhang
Keyword(s):  
Surface Roughness ◽  
Wear Resistance ◽  
Characteristic Parameter ◽  
Surface Wear ◽  
Roughness Parameters ◽  
Wear Performance ◽  
Surface Roughness Parameters ◽  
Element Simulation ◽  
Incidence Analysis ◽  
Sliding Distance

Surface roughness parameters are an important factor affecting surface wear resistance, but the relevance between the wear resistance and the surface roughness parameters has not been well studied. This paper based on the finite element simulation technology, through the grey incidence analysis (GIA) method to quantitatively study the relevance between the wear amount of per unit sliding distance (ΔVs) and the surface texture roughness parameters under dry friction conditions of the different surface topography. A zeroth order six-variables grey model, GM(0,6), for prediction the wear characteristic parameter ΔVs was established, and the experiment results verified that the prediction model was accurate and reasonable.

The Abrasive Resistance Study about the Cutting Picker 40Cr of Coal Cutter

2013 ◽  
Vol 387 ◽  
pp. 227-230
Author(s):  
Ning Zhang ◽  
Shu Chen Wang ◽  
Na Shi ◽  
Hao Chen
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Service Life ◽  
Labor Intensity ◽  
Surface Wear ◽  
Work Efficiency ◽  
Abrasive Resistance ◽  
Treatment Processes ◽  
Mining Capacity

The cutting pick is primarily used in footing excavation such as coal mining and roadway excavation, so the performance of cutting tooth directly affect the mining capacity, the driving efficiency, and the service life of the tool. The quality of domestic mining pick is lower than that abroad, especially the tooth body wear of the whole shearer picks accounts for half of its overall failure. Thus tooth body 40Cr was treated by various heat treatment processes in this experiment, so as to improve the hardness and wear resistance of cutting tooth, analysis the surface wear scar of morphology, research the wear mechanism, that made for reducing the consumption of cutting tooth, improving work efficiency, and easing the labor intensity of workers undergound.

scholarly journals Investigation on the wear of spur gears generated by modified cutter

Friction ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 288-300
Author(s):  
Fangyan Zheng ◽  
Jun Zhang ◽  
Ligang Yao ◽  
Rulong Tan
Keyword(s):  
Wear Resistance ◽  
Tool Wear ◽  
Tooth Surface ◽  
System Failure ◽  
Spur Gears ◽  
Surface Wear ◽  
Wear Performance ◽  
Transmission Errors ◽  
Wear Damage ◽  
Profile Loss

AbstractTooth surface wear damage is one of the main causes of gearing system failure. Excessive wear leads to tooth profile loss and an increase in transmission errors, as the worn gear surfaces are no longer conjugate. Thus, the enhancement of gear durability against wear is important for gear application. Recent works show that cutter modification can aid in reducing the tool wear in gear processing, while the wear performance of the gears produced by modified cutters is still unknown. Therefore, this study focuses on the wear performance of the gear generated by modified cutter. Numerical results show that the wear resistance can be enhanced through proper cutter modification.

scholarly journals Wear resistance of geosynthetic interfaces constituted by geomembranes and geospacers

2013 ◽  
Vol 66 (2) ◽  
pp. 227-232
Author(s):  
Heraldo Nunes Pitanga ◽  
Orencio Monje Vilar ◽  
Jean-Pierre Gourc
Keyword(s):  
Experimental Study ◽  
Wear Resistance ◽  
Service Condition ◽  
Surface Wear ◽  
Direct Effects ◽  
Test Device ◽  
Wear Process ◽  
Ramp Test ◽  
The Stability ◽  
Effect Of Surface

This article presents the results of an experimental study which aimed to evaluate the effect of surface wear on the friction properties of geosynthetic interfaces constituted of geomembranes and geospacers. The tests were performed in ramp test device, and the results showed the different sensitivities of the interfaces to the wear process. For the particular types of interfaces considered in the experiment, the surface wear can increase, decrease or maintain the original friction properties of the geosynthetic interface, with direct effects on the stability under service condition.

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