TECHNOLOGY OF PRODUCING COLD DEFORMABLE WIRE FROM HADFIELD STEEL
DOI:
https://doi.org/10.30838/J.PMHTM.2413.260222.42.631Keywords:
wire, Hadfield steel, hot and cold deformation, strain hardening, recrystallization annealing, vacancy hardening, technological schemeAbstract
Purpose. Development of an improved technology for the production of small cross-section wire from high-strength austenitic steel using hot and cold deformation and heat treatment. Methodology. Structural studies of Hadfield steel 110G13L were carried out by light metallography. Hot deformation of the cast billet was carried out by forging on a hammer of type MA 4134 and hot rolling on a single-strand two-roll mill at a temperature of 1 000….1 030 0С. Heat treatment was performed in a drawing mill stream with heating in the inductor to the temperatures of recrystallization annealing and subsequent quenching. Results. An analysis of experimental studies showed the fundamental possibility of producing cold-deformed wire from Hadfield steel with a diameter of 2...5 mm, which can be used in automatic machines for welding and surfacing. Originality. A mode has been developed that includes heating, a combination of deformation operations, as well as regulated heating and water cooling according to the principle of vacancy hardening, which together gives the effect of a fine-grained structure, significantly reducing the intensity of strain hardening of thin wires from high-strength austenitic steel. Practical value. The developed technological scheme significantly reduces the production cycle, reduces the cycle time and provides significant resource savings.
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