DOI: 10.52150/2522-9117-2023-37-324-339

Dobriak Volodymyr Dmytrovych, Ph. D. (Tech.), Leading Engineer, State Enterprise “Ukrainian Institute for Designing Iron and Steel Works”

Uhriumov Dmytro Yuriiovych, Technical Director, LLC “Engineering Bureau Franke International”

Nykolayenko Yuliya Mykolayivna, Senior Teacher, Ukrainian State University of Science and Technologies, Lazaryan St., 2, Dnipro, 49010, Ukraine. E-mail: yulia.nykolaenko@gmail.com

Solovyova Inna Anatoliivna, Ph. D. (Tech.), Associate Professor, Ukrainian State University of Science and Technologies, Lazaryan St., 2, Dnipro, 49010, Ukraine. ORCID 0000-0003-1569-567X. E-mail: solov@ua.fm

CONDITION AND DEVELOPMENT OF METHODS FOR DIVIDING A HOT METAL TO MEASURED LENGTHS

Abstract. Analysis of hot metal dividing methods into measured lengths from the point of view of providing the required quality of their ends after separation, as well as high performance methods is the aim of the work. This is especially important for the preparation of hot metal for subsequent processing, including rolling and tube rolling units, where high quality of the ends of the workpieces reduces the end cut and metal consumption ratios, and tube quality also improves the quality of rolled steel shells and pipes. Well-known literary and patent sources in the field of the separation of hot metal into measured lengths both during continuous casting of steel and in subsequent redistribution, are researched in this work. As a result of the analysis, it has been established that widely used methods for the separation of hot metal in practice cannot provide high quality pipe ends after separation, which increases the metal loss in subsequent redistribution. The most promising for the separation of hot metal into measured lengths in rolling and tube-rolling production is hot-abrasive cutting and cutting with rotary saws. They are becoming more common in production. The practical significance of the results presented in this paper are proposals for the use of progressive methods for separation of hot metal both in terms of high productivity and, above all, the required quality of the resulting ends after separation for subsequent redistribution. The development directions of the analyzed methods for the separation of hot metal are considered. A waste-free two-stage method has been proposed for dividing round hot billets into dimensional parts, which improve the quality of the ends for subsequent rolling of pipes.

Key words: metal separation, quality of the ends, metal squeezing, cutting with scissors, abrasive cutting, rotary saws cutting, impulsive cutting, productivity.

DOI: https://doi.org/10.52150/2522-9117-2023-37-324-339

For citation: Dobryak, V. D., Ugryumov, D. Yu., Nykolayenko, Yu. M., &Solovyova, I. A. (2023). Condition and development of methods for dividing a hot metal to measured lengths. Fundamental and applied problems of ferrous metallurgy, 37, 324-339. https://doi.org/10.52150/2522-9117-2023-37-324-339

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