Effect of Noncontact Ultrasonic Technology on Solidification Quality of Electroslag Steel

A new electroslag furnace with ultrasonic vibration introduced through water-cooled base plate was designed and the effects of ultrasonic power on the distribution of elements, compactness and carbides in the electroslag remelting (ESR) ingots was investigated. The results showed that the distributi...

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Bibliographic Details
Published inJournal of iron and steel research, international Vol. 23; no. 11; pp. 1168 - 1176
Main Authors SHI, Xiao-fang, CHANG, Li-zhong, ZHU, Zheng-hai, WANG, Jian-jun, ZHOU, Li
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.11.2016
Springer Singapore
Subjects
Applied and Technical Physics
carbide
electroslag remelting
element distribution
Engineering
Machines
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
Metallurgy and Metal Working
Physical Chemistry
Processes
solidification
ultrasonic
element distribution
ultrasonic
solidification
electroslag remelting
carbide
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Summary:A new electroslag furnace with ultrasonic vibration introduced through water-cooled base plate was designed and the effects of ultrasonic power on the distribution of elements, compactness and carbides in the electroslag remelting (ESR) ingots was investigated. The results showed that the distribution of elements on the entire excitation section changed with the change of ultrasonic power under experimental conditions. The statistical segregation of elements was minimum when the ultrasonic power was 500 W, whereas excessively high or excessively low power was not conducive to the uniform distribution of elements. Meanwhile, the compactness of ESR ingots gradually increased with the increase in ultrasonic power and distribution of compactness was the most uniform when ultrasonic power reached 500 W. Further increase in the ultrasonic power was not conducive to the improvement of compactness. The distribution characteristic of carbides was similar to the distribution of elements and compactness. The results indicated that the ultrasonic vibration introduced through water-cooled base plate was advantageous in improving solidification quality. However, this method needed reasonable ultrasonic power. Moreover, the effects of ultrasonic power varied for different elements.
Bibliography:11-3678/TF
ultrasonic; eleetroslag remelting; solidification; element distribution; carbide
A new electroslag furnace with ultrasonic vibration introduced through water-cooled base plate was de- signed and the effects of ultrasonic power on the distribution of elements, compactness and carbides in the electroslag remelting （ESR） ingots was investigated. The results showed that the distribution of elements on the entire excita- tion section changed with the change of ultrasonic power under experimental conditions. The statistical segregation of elements was minimum when the ultrasonic power was 500 W, whereas excessively high or excessively low power was not conducive to the uniform distribution of elements. Meanwhile, the compactness of ESR ingots gradually in- creased with the increase in ultrasonic power and distribution of compactness was the most uniform when ultrasonic power reached 500 W. Further increase in the ultrasonic power was not conducive to the improvement of compactness. The distribution characteristic of carbides was similar to the distribution of elements and compactness. The re- sults indicated that the ultrasonic vibration introduced through water-cooled base plate was advantageous in impro- ving solidification quality. However, this method needed reasonable ultrasonic power. Moreover, the effects of ultra- sonic power varied for different elements.
ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(16)30172-8