Superheating is a phenomenon in which the temperature in a solid phase is higher than the melting temperature. This phenomenon is common when a microwave or an induction heating method is used during a melting process. The classical interface conditions (Stefan conditions) have to be modified in order to model this phenomenon. In this paper we study a melting process for highly conductive mater...

Slag control in small and medium-scale (SME) foundries is based on operator’s experience, as foundry operators can hardly see a visual difference between liquid metal slag at metal-making temperatures with the naked eye. With increasing requirements of high-quality castings, it imperative that SMEs employ smart, innovative, affordable technologies to assist real-time monitoring stay competitive...

In this study, the effects of aging times and temperatures on microstructure, hardness compression strength Al0.7CoCrFeNi high entropy alloy have been investigated. The was cast in a vacuum induction melting furnace, homogenized at 1250 ˚C for 6 h; then aged 700 to 1000˚C 2-8 h. as-cast structure is dendritic includes FCC(A1) BCC(A2, B2) phases with 497 HV. During ageing, B2 precipitates grain ...

High quality heating device made of ferromagnetic alloy (thermal seed) was developed for hyperthermia treatment of cancer. Ferromagnetic seeds of PdNi, PdCo and CuNi are prepared by induction furnace and subsequent heat treatment. Magnetic induction and hysteresis loops are measured as functions of temperature. The power dissipated from each seed was calculated from the area enclosed by the hys...

The recent increase in number and capacity of special melting techniques and refi ning processes is related to the continuing growth of high-temperature alloy usage in wrought and cast form and to the fact that the metallurgical and technological potential of conventional melting and casting processes have been largely exhausted. The evol ution of the major melting processes for high-performanc...

As a modification of the conventional blast furnace (BF), top gas recycling-oxygen (TGR-OBF) has been continuously studied in context technological transformation low-carbon metallurgy. it set new inlets stack and changes operation system hearth, pressure drop in-furnace flow are primary problems to be solved TGR-OBF’s industrialization. In this paper, two-dimensional model whole furnace, based...

The paper describes design features, methodology and results of the study 10 induction electromagnetic crucible furnaces with a C -shaped magnetic core (MC). is covered by turns an electric coil (EC) small volume up to ~14.56 dm3. have MC from set used transformer plates working ~ 28.5 – 30.8 dm3, capacitor bank (CB), number w = 23 50 copper or aluminum wire, voltage 380 390 V, frequency Hz. wa...

Ductile iron is one of the most important engineering materials, in view of its excellent castability, signifi cantly better mechanical properties and low cost [1, 2]. It represents the fastest growing segment of the iron market. In the medium term, it is to be expected that the market share of nodular iron will level off at 40 % to 45 % [3]. Achieving the full potential of ductile iron require...

Abstract: This study presents the research results of effect that refining process has on porosity and mechanical properties of high pressure die castings made of AlSi12S alloy. The operation of refining was carried out in a melting furnace with the use of an FDU Mini Degasser. Mechanical properties (UTS, YS, Elongation, Brinell Hardness) were assessed on samples taken from high pressure die ca...