On the basis of formulated mathematical model for study electromagnetic processes in a two-phase (two-inductor) induction channel furnace, electrical losses metal frameworks furnace were calculated vari-ous options their sectioning. The influence phase angle between voltages feeding inductors fur-nace on distribution specific and integral frames is determined. Practical recommendations re-ducin...

titanium aluminide and its alloys have been utilized in automotive, aerospace and power industries because of their specific properties such as low density (~ 4 g/cm3), high melting temperature (~ 1460 °c) and excellent high-temperature strength. ti-48al intermetallic compound and its alloys with 1.5, 3 and 5 at.%mn were produced with mechanical alloying of elemental powders for 50 hours. the p...

This paper analyses the role of barriers preventing the worldwide take-up of a clean technology: the electrical arc furnace. It also identifies which barriers affect a parameter that summarises the combined effect of all of them. The first step, determination of the combined effect of the barriers, is carried out using a novel approach to model the diffusion of innovations. This new approach is...

the continuous improvement of eaf performance is crucial for the increase in productivity and cost effectiveness and to render an environmental friendly process. rhi supports these targets by providing a diverse range of refractory and process solutions. chemical energy in practical operation by injection of gaseous media like oxygen and natural gas, and solid materials like carbon have become ...

chromate conversion coating is applied on aluminum 6061. the optimum conditions for chromate bath composition and immersion time are also obtained for standard requirements provision such as corrosion resistance in salt spray test, electrical resistance and coating quality. the applied coatings are electrochemically tested in sea and distilled water. according to tafel and cyclic polarization c...

This article presents the results of a study on development an anti-corrosion plaster composite based water glass with increased electrical conductivity. Known acid-resistant quartz-fluorosilicate composites containing liquid sodium silicate, fluorosilicate and high-silica filler in form quartz, andesite or diabase powder were chosen as prototype. The low resistance adhesion to Portland cement ...

The electrical resistance of mats of single-wall carbon nanotubes (SWNTs) is measured as a function of mat temperature under various helium pressures, in vacuum and in atmospheric air. The objective of this paper is to study the thermal stability of SWNTs produced in a helium arc discharge in the experimental conditions close to natural conditions of SWNT growth in an arc, using a furnace inste...

This paper presents the development of resistance heating furnace based on direct electrical conduction method that can perform with lower energy. Based concept welding, was developed for heat treatment 22MnB5 Boron steel aim to change microstructure from pearlite austenite phases before quenched into martensite phase. The main component this machine consisted transformer, copper electrodes, ca...

In reactor furnace, due to high temperature and high pressure, data can be measured only near the furnace wall. In this paper, the way to estimate temperature distribution in a reactor furnace using measured data near the furnace walls and to control temperature distribution to the desired temperature distribution was studied. In the estimation, SQP method is employed using measured data near t...

Introduction Recent advances in nanotechnology have heralded new processes for fabrication of nanomaterials having macroscopic dimensions. A solid-state process for producing macroscopic sheets made of carbon nanotubes has been reported in [1]. The technological promise of carbon nanotubes includes charge transport with minimal scattering, leading to expectations of large electrical conductivit...