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Recently,INTECO special melting technologies has been assigned with the design and delivery of various large sized ESR furnaces up to 250 tons.Since that time some of these projected ESR plants were erected and commissioned.The present paper deals with these design and engineering challenges for large sized ESR plants.Results are given regarding the electrical,mechanical as well as operational parameters due to practical relevant data and will be compared with the previously calculated and predicted ones.A special focus lies on a well-controlled electrode change operation which is a precondition when producing big ESR ingots.Furthermore,the main melt station and its high current line of INTECOs large ESR furnaces is designed to enable the application of the CCM)-Technology(current conductive mold)which is further explained.
Ultimately,the results show that the big ESR ingots,which have been produced so far,have a good surface appearance and a well controlled chemical composition.
Ultimately,the results show that the big ESR ingots,which have been produced so far,have a good surface appearance and a well controlled chemical composition.