The effect of speed and time stirring for AA6063 matrix manufactured by Electric Induction Furnace reinforced 0.75wt.% 1.5wt.% Al2O3 nanoparticles is studied. Specimens produced were subjected to tensile, microhardness, tribology tests. It observed that an increase in the agitation samples with 0.75%, favors grain size, while opposite pieces 1.5%, where a refining favored, affecting mechanical ...

Induction heating equipment is a source of strong and nonhomogeneous magnetic fields, which can exceed occupational reference levels. We investigated a case of an induction tempering tunnel furnace. Measurements of the emitted magnetic flux density (B) were performed during its operation and used to validate a numerical model of the furnace. This model was used to compute the values of B and th...

This paper presents the chemical and phase composition, microstructure, selected properties both at room temperature corresponding to expected operating conditions of three successive generations TiAl-based alloys (Ti-47Al-2W-0.5Si, Ti-45Al-8Nb-0.5(B,C), Ti-45Al-5Nb-2Cr-1Mo-0.5(B,C)-0.2Si) melted in a vacuum induction furnace with high-density isostatic pressed graphite crucibles. The obtained ...

A mathematical heat transfer model for the prediction of transient heating of the slab in a direct-fired walking beam type reheating furnace has been developed by considering the nongray thermal radiation with given furnace environments. The furnace is modeled as radiating nongray medium with carbon dioxide and water with five-zoned gas temperature and the furnace wall is considered as a consta...

Vacuum furnace has been used for brazing repair of aerospace components, but it is a slow process which typically takes few hours. The prolonged heating and cooling cycles could cause some adverse effects on the components such as excessive grain growth. A rapid technique using induction coil was studied to evaluate its suitability localized repair. Induction Inconel 718 carried out AMS 4777 pa...

An analytical model of a spreader-stoker wood waste fired boiler has been developed for pre­ dicting the size of the largest particle which can be entrained by the upward motion of the furnace gases. This model is based on an entrainment model which equates particle in-situ settling velocity to furnace gas velocity and uses a stirred reactor mod­ el to evaluate furnace conditions. The effects o...

The blast-furnace process consists of a large number of processes that are physicochemical, thermal and mechanical interconnected processes. In addition to main processes consisting of iron oxides reduction, pig iron and slag melt creation, also realised are fuel combustion, gas flow, charge and melt flow, dissociation and other reactions in the solid and liquid phases. Inputs to the blast-furn...

M. Szega, W. Stanek Silesian University of Technology, Gliwice, Poland L. Blacha Silesian University of Technology, Katowice, Poland The reduction of energy consumption in the blast furnace is still the subject of investigations using mathematical modelling of a blast furnace plant. Theoretical-empirical hybrid models of a blast furnace and its equipment have been presented. This model is built...

A high titania slag that is used as a feedstock for TiO2 manufacturing obtained by ilmenite smelting (FeO.TiO2). The composition of the dependent on mineral preparation, i.e., in our study. At laboratory scale, slags are mostly using raw material. An easy and simple way would be to prepare synthetic individual components heating them temperature furnace. has oxidizing nature requires an inert a...