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The Investigation of Effection between Electromagnetic Levitation Melting and Frequency of Power Supply and Structure of Coil
Author: LiLei
Tutor: WangYongQing
School: Hebei University
Course: Detection Technology and Automation
Keywords: Electromagnetic levitation melting Induction coil structure Power frequency Suspension force Absorbed power
CLC: TF111.5
Type: Master's thesis
Year: 2010
Downloads: 95
Quote: 0
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Abstract
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Electromagnetic levitation melting technology is a non- crucible materials processing technology , using some technology so that the material does not contact with the container wall in the processing, handling materials , and materials science research, and the preparation of high purity materials indispensable technology , with no contamination of the container wall , melt evenly , heating and melting fast and the surface of the gas-liquid phase equilibrium speed advantages . Electromagnetic levitation melting effect from the induction coil structure parameters and power frequency parameters of theoretical analysis and experimental validation studies and analysis of the results . First , the analysis of the impact of the induction coil structure parameters levitation force, electromagnetic levitation melting temperature . By theoretical calculation , the analysis of the structural parameters of the suspension of the induction coil and the suspension force relationship . Analysis induction coil structural parameters on the impact of the suspension of the sample temperature , provides the theoretical basis for the suspension structure design study of the induction coil . Second , analysis of the impact of high - frequency power frequency electromagnetic levitation melting levitation force , the power absorbed by the sample . Sample suffered suspension force, the relationship between the absorption power and the high-frequency power source frequency . Analyzed the general principles of selected frequency parameters calculated the frequency of the high frequency power supply should try to choose between the frequency f1 slows absorption minimum value of power frequency f2 and the levitation force increases , and as close as possible to f1 electromagnetic levitation melting experiments reasonable choice of the frequency of the high-frequency power supply has a guiding role . Finally, focus on the experimental study of electromagnetic levitation melting . Actual production of 38 different parameters of the induction coil , the use of three types of high-frequency power , and nearly a thousand times the suspension smelting experiments 0.8g ~ 15g of the quality of the steel of the cylindrical, spherical - like . The experimental results with the previous theoretical analysis basically. It was found that the spherical the samples and cylindrical samples of electromagnetic levitation melting . Comprehensive consideration of the suspension force and stability, has been suspended best structural parameters of the induction coil . Quartz protection tube argon gas to protect the environment , it has been able to stabilize the suspension smelting 1.49 ~ 14g cylindrical and spherical steel sample , ten minutes ranging from tens of seconds to stabilize the liquid suspension .
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CLC: > Industrial Technology > Metallurgical Industry > Metallurgical Technology > Extractive metallurgy (Chemical Metallurgy) > Metal smelting > Electrometallurgy
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