In recent years the aluminum matrix composites are gaining wide spread applications in automotive, aerospace, defense, sport and other industries. The reason for this is their exciting properties like high specific strength, stiffness, hardness, wear resistance, dimensional stability and designer flexibility. The present work reports on mechanical properties and microstructure analysis of Al-Si...

Early stage oxidation behavior of SiSiC cellular lattices with different cell types was studied at 1400 °C in two different environments: a porous burner and an electric furnace with stagnant air. Oxidation and silicon alloy bead formation were observed and identified as the most important factors affecting the integrity of the structures. Lowmelting temperature silicon-based alloys formed from...

LiNbO a crystal has excellent electro-optical and non-linear optical properties [1, 2]. However local fluctuations of the refractive index and light scattering centers prevent a wider application of this material in optical devices. Since sub-grain boundaries seem to cause such inconvenience, the production of sub-grain free LiNbO a crystals is strongly required. Various properties of molten L ...

The slagging and fouling characteristics of the heat recovery steam generator (HRSG) for ferrosilicon electric furnaces are discussed in this paper. Three ash samples were taken from the HRSG of a ferrosilicon furnace in Ningxia Province, China, which suffered from serious slagging and fouling. X-ray fluorescence (XRF), X-ray powder diffraction (XRD) and scanning electron microscope (SEM) were ...

This work describes the production of magnesia-alumina spinel using microwaves as energy source. The microwave energy was supplied by means of an 800 W magnetron operating at 2.45 GHz. The microstructure and the mineral composition were studied by means of SEM and X-Ray diffraction respectively. The resultant product shown sintered zone and incipient smelting of the reagents meaning that microw...

The life of the hearth is main limiting link campaign a blast furnace. As equipment for holding molten iron in furnace, high-temperature direct contact with refractory, which makes refractory have larger temperature increase. If gradient inside large, it generates large thermal stress and causes to crack. Blast furnace gas intrude into gap, directly melting erosion other chemical carbon bricks....

The problem of increasing the competitiveness technology today is largely determined by quality manufacturing large-sized cast billets for their supporting systems. Many factors are involved in forming service properties a casting. Each factor important and affects resulting presence "cold" slag does not allow refining processes to be fully realized during induction melting steel. Therefore, at...

The design of an aluminium melting furnace has faced two challenges: mathematical modelling and simulative optimization. This paper first uses fluid dynamics to model the process mathematically. Then, is utilized simulate a round shaped reverberatory for alloys. In order achieve highest thermal efficiency furnace, simulation are performed predict complex flow patterns, geometries, temperature p...

In industrial applications, pre-heating and re-heating of the exhaust air have very big savings fuel costs emissions. Especially, recuperative, regenerative furnaces are an efficient method to obtain more heat sources. Regenerative furnace systems provide superior cost in applications when they adapted with suitable processes. this study, recuperative aluminum melting transformed high performan...

The effectiveness of rotary degassing on the defect formation and mechanical properties final casting aluminium alloy EN AC 46000 was investigated, along with its impact energy consumption in furnace. In melt preparation prior to casting, molten metal is usually transported from melting furnace as a cleaning procedure. Under conditions this specific study, negligible degradation observed cast c...