from the conferences organized by TANGER Ltd. provisional website
This article deals with production technology and secondary metallurgy processing of tool steels in electric steelworks of VÍTKOVICE HEAVY MACHINERY a.s. with the focus on thermal and slag regulation of heats. During the production and secondary metallurgy steel processing of a trial heat so-called „programme thermo-time steel processing technology“ (PTVO) was used.In its evaluation, the attention was mainly focused on the steel production – technological parameters of 100CrMo7 steel. At the trial melting based on the liquidus temperature, the optimal degree of overheating of the steel melt, and also in the framework of the evaluation comparison with the thermal regime of heats of the same kind of steel with common technology was performed.When evaluating the slag regime, the attention was mainly focused on the composition of refining slags and the course of desulphurisation of the steel melt.Keywords: tool steels, programme thermo-time steel processing technology, refining slags, desulphurisation
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