Verified email at bau.edu.jo
Technical Sciences Department
Al-Balqa Applied University, Ma’an College
Kiev International University of civil Aviation- Ukraine 1999.
PH.D in Engineering Sciences Friction and Wear in Machinery.
Kiev International University of civil Aviation- Ukraine 1994.
Honors Diploma in Mechanical Engineering.
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Tribology in Industry, ISSN: 03548996, Pages: 121-130, Published: 2020 Faculty of Engineering, University of Kragujevac
It has been found that empirical analysis provides a possibility to select the optimum concentration of the repair and restoring composition (RVS), addition of which to the transmission oil provides an increase in wear resistance of 42Cr4 steel under rolling and slip conditions. The structural adaptability of finely dispersed components of the friction geo-modifier RVS, boundary lubricating films and surface layers of metal under friction and under dynamic loading conditions contribute to reducing the wear of contact surfaces. It has been established that the addition of 1.5 % RVS to the lubricant provides a 17 % reduction in the wear of rolling friction pairs, provides hardening of the surface layers of the metal by 1.36 times, compared with the initial surface. The micro-hardness of the surface layers of the metal and its gradient depth distribution, the microgeometry of the surface layer formed during friction, and the formation of boundary lubricating layers on the friction-activated contact surfaces are key indicators that increase the wear resistance in friction pairs. © 201x Published by Faculty of Engineering Corresponding author: Tareq M.A. Al-Quraan Al-Balqa Applied University Ma’an College Technical Sciences Department, 19117 Al-Balqa, Jordan. E-mail: firstname.lastname@example.org
Journal of Mechanical Engineering, ISSN: 18235514, eISSN: 2550164X, Pages: 111-126, Published: December 2017
T. Alquraan, Yu. Kuznetsov, and T. Tsvyd
Procedia Engineering, eISSN: 18777058, Volume: 150, Pages: 689-695, Published: 2016 Elsevier BV
Abstract The operation principles of both new and improved clamping mechanisms of the CNC lathe with the automatic no–reinstallation workpiece manipulation are described in this article. The theoretical analysis of power characteristics with the spindle in rotary and non-rotary modes has been carried out with the account of unbalanced chuck jaws’ centrifugal forces. The efficiency of the new clamping mechanism at a higher spindle velocity has been justified.
1-The effect of friction and joints rigidity on the power characteristics of rotating chucks
2-Structural-Energy Characteristics of Tribotechnical Contact in Unsteady Operational Modes
3- High-speed clamping Mechanism of the CNC lathe with Compensation of Centrifugal Forces.
4-The Effect of the Slippage Degree at Rolling with Slipping on the Wear Resistance of Contact Surfaces
5-Temperature Resistance of the Boundary Lubrication Layers Under Rolling with Slippage Condition
6-A Manifestation of Non-Hydrodynamic Factors in Steady-State Conditions of Friction
7-Evaluation of Influence of the RVS Friction Geomodifier on Tribotechnical Parameters of the Contact in Non-Stationary Working Conditions.