Electric induction furnace installed

World Pumps ◽  
1995 ◽  
Vol 1995 (343) ◽  
pp. 8
Keyword(s):  
Induction Furnace ◽  
Electric Induction

scholarly journals Melting of Grey Cast Iron Based on Steel Scrap Using Silicon Carbide

2014 ◽  
Vol 14 (3) ◽  
pp. 77-82 ◽  
Author(s):  
A. Stojczew ◽  
K. Janerka ◽  
J. Jezierski ◽  
J. Szajnar ◽  
M. Pawlyta
Keyword(s):  
Silicon Carbide ◽  
Cast Iron ◽  
Induction Furnace ◽  
Melting Process ◽  
Steel Scrap ◽  
Pig Iron ◽  
Electric Induction ◽  
Liquid Metal Surface ◽  
Grey Cast ◽  
Synthetic Graphite

Abstract The paper presents the issue of synthetic cast iron production in the electric induction furnace exclusively on the steel scrap base. Silicon carbide and synthetic graphite were used as carburizers. The carburizers were introduced with solid charge or added on the liquid metal surface. The chemical analysis of the produced cast iron, the carburization efficiency and microstructure features were presented in the paper. It was stated that ferrosilicon can be replaced by silicon carbide during the synthetic cast iron melting process. However, due to its chemical composition (30% C and 70% Si) which causes significant silicon content in iron increase, the carbon deficit can be partly compensated by the carburizer introduction. Moreover it was shown that the best carbon and silicon assimilation rate is obtained where the silicon carbide is being introduced together with solid charge. When it is thrown onto liquid alloy surface the efficiency of the process is almost two times less and the melting process lasts dozen minutes long. The microstructure of the cast iron produced with the silicon carbide shows more bulky graphite flakes than inside the microstructure of cast iron produced on the pig iron base.

Effect of Silicon on the Cast Macrostructure of Fe-Si Alloys

2012 ◽  
Vol 1372 ◽  
Author(s):  
H. J. A. García ◽  
M. H. Cruz ◽  
A. A. Balandra ◽  
F. G. González ◽  
Y Houbaert
Keyword(s):  
Silicon Content ◽  
Induction Furnace ◽  
Dendritic Structure ◽  
Inert Atmosphere ◽  
Freezing Range ◽  
Electric Induction ◽  
Columnar Grains ◽  
Cast Alloys ◽  
Equiaxed Grains ◽  
Central Slice

ABSTRACTIn this work was studied the effect of silicon content from 0.5 to 3 wt.% Si on the macrostructure of casting ingots. Fe-Si alloys with low contents of impurities were produced in electric induction furnace under inert atmosphere. Castings of 12.5 cm thick, 25 cm long and 30 cm high were obtained of each alloy poured into metallic mould. The ingots obtained were sectioned in slices of 12 cm wide, 25 cm high and 2 cm thick, the central slice of each ingot was prepared metallographically to reveal the macrostructure of the six cast alloys. The results indicate that alloys with low silicon levels (0.5 and 1.0% Si) and with small solidification intervals have relatively fine equiaxed grains, while alloys with higher silicon content and a higher solidification intervals present predominantly columnar grains. These macrostructures are not the usually structures linked to short and long freezing range. Another important result is the absence of dendritic structure usually present in cast alloys.

scholarly journals Influence of Blowing of Argon on the Cleanness of Steel

2012 ◽  
Vol 12 (3) ◽  
pp. 91-94
Author(s):  
A. Pribulová
Keyword(s):  
Flow Rate ◽  
Induction Furnace ◽  
Argon Flow Rate ◽  
Secondary Metallurgy ◽  
Steel Quality ◽  
Argon Flow ◽  
Electric Induction ◽  
Metallic Inclusions ◽  
Near Future ◽  
Very High

Abstract The mechanical properties of steel components are controlled by the chemical composition and mechanical treatment to which the steel is submitted. Non-metallic inclusions have a very high influence on the steel quality but secondary metallurgy enables to reduce their content in the steel. Possibilities of secondary metallurgy are relatively extensive but financial situation in Slovak foundries does not enable to make investments in secondary metallurgy in the near future. Accessible means for influencing of steel quality is injection of an inert gas. Main goal of experiments described in the article was verify the influence of blowing of argon into the steel in an electric induction furnace on its cleanness. Duration and flow-rate of argon blowing have a very clearly influence on the final content of non-metallic inclusions. Minimum time of argon blowing necessary for reducing of content of non-metallic inclusions in one tonne electric induction furnace was more than 6 minutes and recommended argon flow rate was 10 litters per minute.

scholarly journals Influence of Addition of Briquettes with Dust Content into the Charge of Electric Induction Furnace on Cast Iron Quality

2012 ◽  
Vol 12 (3) ◽  
pp. 95-98
Author(s):  
A. Pribulová ◽  
P. Futáš
Keyword(s):  
Tensile Strength ◽  
Cast Iron ◽  
Chemical Composition ◽  
Induction Furnace ◽  
Dust Content ◽  
Magnetic Part ◽  
Electric Induction

Abstract Foundry dust from blasting and grinding of castings contain a high amount of iron, ergo it is possible its recycling in foundry process. Dust was compacted by briquetting, two kinds of briquettes were prepared (A contained 95% magnetic part of dust from casting blasting +5% bentonite and B contained 95% mixture of dust from casting grinding and magnetic part of dust from casting blasting + 5% bentonite) and used as a part of charge into the electric induction furnace. It was found that addition of briquettes has had an influence of a chemical composition of cast iron above all on content of sulphur, phosphorus and silicon. It was not reflected in decrease in tensile strength and in microstructure. Yield of metal from briquettes was not lower then 70%.

Total Assessment Evaluation Of a Cupola-based to Electric Induction Furnace Replacement

1998 ◽  
Vol 95 (5) ◽  
pp. 33-49 ◽  
Author(s):  
Eric L. Wick ◽  
Reinaldo Arreaza-Blanco ◽  
G. Ivan Maldonado ◽  
Howard N. Shapiro
Keyword(s):  
Induction Furnace ◽  
Electric Induction

Electric-induction fluid heaters

1988 ◽  
Vol 2 (5) ◽  
pp. 271
Author(s):  
A.P. Baines
Keyword(s):  
Electric Induction

Method of first integrals and interface, surface waves

2010 ◽  
Vol 32 (2) ◽  
pp. 107-120
Author(s):  
Pham Chi Vinh ◽  
Trinh Thi Thanh Hue ◽  
Dinh Van Quang ◽  
Nguyen Thi Khanh Linh ◽  
Nguyen Thi Nam
Keyword(s):  
Rayleigh Waves ◽  
Displacement Vector ◽  
Attenuation Factor ◽  
Electrical Potential ◽  
Polarization Vector ◽  
First Integrals ◽  
Dispersion Equations ◽  
Interface Surface ◽  
Electric Induction ◽  
The One

The method of first integrals (MFI) based on the equation of motion for the displacement vector, or  based on the one for the traction vector was introduced  recently in order to find explicit secular equations of Rayleigh waves whose characteristic equations (i.e the equations determining the attenuation factor) are fully quartic or are of higher order (then the classical approach is not applicable). In this paper it is shown that, not only to Rayleigh waves,  the MFI can be applicable also to other waves by running it on the equations for mixed vectors. In particular: (i) By applying the MFI  to the equations for the displacement-traction vector we get the explicit dispersion equations of Stoneley waves in twinned crystals (ii)  Running the MFI on the equations for the traction-electric induction vector and the traction-electrical potential vector provides the explicit dispersion equations of SH-waves in piezoelastic materials. The obtained dispersion equations are identical with the ones previously derived using the method of polarization vector, but the procedure of driving them is more simple.

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