Tribological Investigation of Detonation Sprayed Ni-Cr And Al 2 O 3 13Tio2 Coatings On Grey Cast Iron To Enhance Its Wear Resistance
This paper is concerned with the investigation of the capability of Detonation sprayed Ni-Cr And Al2O3 13TiO2 coatings to improve the tribological and mechanical properties of grey cast iron. The present study describes and compares the mechanical and tribological properties of NiCr and Al2O3 13TiO2 D-Sprayed coatings deposited on two different substrates (GI250 and GIHC) Experiments using a tribometer (pin on disc) is performed in order to evaluate the wear properties. The coating microstructures were characterised by SEM and EDAX. Cumulative weight analysis is done to compare the wear loss in weight and its concluded Al2O3 13TiO2 form a good bond with GI250 using Detonation spray process.
Editorial: tribology at the forefront of study and research on metal cutting
A clear distinction of the metal cutting tribology and a short description of the author?s personal vision on the place, role and importance of this field of knowledge are presented. As discussed, a great amount of this energy required by the cutting system for its existence is spent over the tribological interfaces in metal cutting, namely, on the tool-chip, tool-workpiece and chip-workpiece interfaces. System specifics of metal cutting tribology are discussed. This paper sets the objectives and direction for the future work on metal cutting tribology. This paper highlights the major features of the current Special Issue.
Numerical Simulation of Induction Heating Process of Continuous Casting Slab
Compared with traditional blazing furnace, the Continuous Casting-Direct Rolling is an advanced manufacturing steel technology, which can reduce energy waste, decrease pollution and enhance efficiency. The characteristics of steels during induction heating are complex, the change of material properties with temperature makes exact analysis methods very difficult to implement. Therefore, a powerful computer aided numerical tool (i.e., finite difference analysis) is selected to numerically model the induction heating process in this paper. The mathematic model coupling with electromagnetic field and thermal field was established, and it was solved by finite difference method (FDM), thus the slab temperature distribution and its variation with time were obtained, and the characteristics in whole induction heating process were studied. To validate the program feasible, the results were evaluated and compared with experiment results, which showed that the simulation results are reliable and effective. The skin effect in heating process from the two results was studied and demonstrated, the temperature change caused by different parameters such as the induced power intensity and the corner radian were also presented, which indicate that the slab temperature can be heated uniformly through adjusting these parameters, thus the continuous casting slab can meet the rolling requirement.