FEATURES OF THE MICROSTRUCTURE OF AXIAL BLANKS AFTER ROLLING
DOI:
https://doi.org/10.34185/1991-7848.itmm.2023.01.003Keywords:
continuous billet, carbon steel, steel grade F, hot deformation, liquation.Abstract
A study of the features of the structure of axle blanks made of steel grade F (AAR M-101-2017 Axles, carbon steel, heat-treated) after longitudinal rolling on a TPA 5-12" pipe rolling unit with pilgrim mills in three crimping modes (1 mode: Ø 470 → Ø 380 → Ø 260 mm; 2nd mode: Ø 470 → Ø 420 → Ø 260 mm; 3rd mode: Ø 470 →Ø 260 mm). Determination of the features of the distribution of deformation work and the formation of the final structure after deformation according to the experimental modes of BLZ Ø470 mm per circle Ø260 mm is the goal of research. It was determined that the uniformity of the grain structure is the highest after the application of mode #3 (Ø 470 →Ø 260 mm).
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