Analysis of the pulse current behavior in a massive cylindrical conductor at the electric current treatment of a melt

2011 ◽  
Vol 47 (1) ◽  
pp. 56-60
Author(s):  
V. N. Tsurkin ◽  
A. V. Mel’nik ◽  
A. V. Ivanov
Keyword(s):  
Electric Current ◽  
Pulse Current ◽  
Current Treatment ◽  
Cylindrical Conductor ◽  
Current Behavior

scholarly journals Geometrical Platform of Big Database Computing for Modeling of Complex Physical Phenomena in Electric Current Treatment of Liquid Metals

Data ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 136 ◽  
Author(s):  
Yuriy Zaporozhets ◽  
Artem Ivanov ◽  
Yuriy Kondratenko
Keyword(s):  
Big Data ◽  
Electric Current ◽  
Data Transfer ◽  
Liquid Metals ◽  
Equation System ◽  
Multiscale Simulation ◽  
Current Treatment ◽  
Matrix Transformations ◽  
Practical Case ◽  
Hydrodynamic Wave

According to the principles of multiphysical, multiscale simulation of phenomena and processes which take place during the electric current treatment of liquid metals, the need to create an adjustable and concise geometrical platform for the big database computing of mathematical models and simulations is justified. In this article, a geometrical platform was developed based on approximation of boundary contours using arcs for application of the integral equations method and matrix transformations. This method achieves regular procedures using multidimensional scale matrices for big data transfer and computing. The efficiency of this method was verified by computer simulation and used for different model contours, which are parts of real contours. The obtained results showed that the numerical algorithm was highly accurate based on the presented geometrical platform of big database computing and that it possesses a potential ability for use in the organization of computational processes regarding the modeling and simulation of electromagnetic, thermal, hydrodynamic, wave, and mechanical fields (as a practical case in metal melts treated by electric current). The efficiency of this developed approach for big data matrices computing and equation system formation was displayed, as the number of numerical procedures, as well as the time taken to perform them, were much smaller when compared to the finite element method used for the same model contours.

Influence of Pulse Electric Current on Solidification Structures of Al-Si Alloys

2007 ◽  
Vol 546-549 ◽  
pp. 723-728 ◽  
Author(s):  
Chun Yan Ban ◽  
Yi Han ◽  
Qi Xian Ba ◽  
Jian Zhong Cui
Keyword(s):  
Electric Current ◽  
Magnetic Force ◽  
Current Treatment ◽  
Discharge Voltage ◽  
Experimental Results ◽  
Hypereutectic Alloy ◽  
Columnar Crystal ◽  
Pulse Electric Current ◽  
Primary Si ◽  
Pulse Electric

The effect of pulse electric current with different density on solidification structures of hypoeutectic Al-7%Si, Al-10%Si and hypereutectic Al-22%Si alloys was studied. The shape and distribution of α-Al and Si were analysed.The experimental results showed that α- Al of Al-7% Si alloy is shortened when applied a pulse electric current during the solidification, and the microstructure turns from the obvious columnar crystal into rosette. After treatment with pulse electric current, the primary Si of Al-22%Si alloy was refined obviously. When the discharge voltage was 3kV, Si tended to gather at the edge of the sample and the primary α- Al appeared in this hypereutectic alloy. When the discharge voltage was 6kV, the primary Si was refined much more and distributes uniformly. Pulse electric current treatment had no evident effect on the approximate eutectic Al-10%Si alloy. The magnetic force was analysed under pulse electric current, and the reason of the phenomenon was discussed

Effect of Pulsed Electric Current Treatment on the Corrosion and Strength of Reinforcing Steel

2012 ◽  
Vol 706-709 ◽  
pp. 937-944 ◽  
Author(s):  
Leopold Kruszka ◽  
Anatoli Babutsky ◽  
Andreas Chrysanthou ◽  
Chu En Tan
Keyword(s):  
Electric Current ◽  
Testing Machine ◽  
Current Treatment ◽  
Static Strength ◽  
Static Tension ◽  
Reinforcing Steel ◽  
Corrosion Tests ◽  
Universal Testing ◽  
Tension Tests ◽  
Pulsed Electric Current

The study was carried out in order to evaluate the effect of the pulsed electric current (PEC) treatment on the corrosion as well as on static strength of Polish reinforcing steel. As-received St3SX was used for investigations. Two kinds of specimens were manufactured by turning from 20 mm diameter re-bars: cylinders of 10 mm diameter and 28 mm length for corrosion tests and standard cylindrical specimens of 6 mm diameter and 30 mm length for static tension tests. Corrosion tests was performed according to the ASTM B117-97 standard. As-received steel tensile specimens and the specimens after PEC treatment were tested using a servo-hydraulic universal testing machine at the strain rate of 10-2 s-1.

Inactivation of wine spoilage yeastsDekkera bruxellensisusing low electric current treatment (LEC)

2010 ◽  
Author(s):  
G. Lustrato ◽  
I. Vigentini ◽  
A. De Leonardis ◽  
G. Alfano ◽  
A. Tirelli ◽  
...  
Keyword(s):  
Electric Current ◽  
Current Treatment ◽  
Wine Spoilage

Near Full Density Nano Iron-Based Materials by Pulse Current Sintering

2007 ◽  
Vol 353-358 ◽  
pp. 2143-2146 ◽  
Author(s):  
Yuan Yuan Li ◽  
Yan Long ◽  
Xiao Qiang Li ◽  
Tungwai Leo Ngai
Keyword(s):  
Relative Density ◽  
Electric Current ◽  
Pulse Current ◽  
Rupture Strength ◽  
Base Material ◽  
Constant Current ◽  
Full Density ◽  
Transverse Rupture Strength ◽  
Average Grain Size ◽  
Iron Based

Constant current plus pulse current electrical sintering was introduced into the sintering of a ball-milled nanocrystalline Fe-2Cu-2Ni-1Mo-0.8C mixed powder. Effect of pulse current charging time on the properties of sintered products was studied. Constant electric current sintering was also used for comparison. A nanostructured iron-based material was obtained within 4 minutes of sintering. It has a density of 7.7 g/cm3 (relative density of 98.7 %) with an average grain size (iron-matrix) of 58 nm and carbide particle size of less than 100 nm, a hardness of HRC 64 and transverse rupture strength of 2004 MPa. When only pulsed electric current sintering was used with a sintering time of 5 min, a fine grained iron-base material with density of 7.74 g/cm3 (relative density of 99.2%), a hardness of HRC 65 and transverse rupture strength of 2045 MPa was obtained.

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