Вплив температури обробки на характеристики дроту з високовуглецевої сталі

• Datum: 2026
• Hauptverfasser: Lutsenko, V.A., Borysenko, A.Yu., Golubenko, T. М., Lutsenko, О. V.
• Format: Artikel
• Veröffentlicht: Physico- Technological Institute of Metals and Alloys of the NAS of Ukraine 2026
• Schlagworte: високовуглецева сталь; патентування; дріт; температура; структура; бейніт; сорбіт
• Online Zugang: https://momjournal.org.ua/index.php/mom/article/view/2026-2-2
• Назва журналу: Metal Science and Treatment of Metals

High-carbon wire for the production of the steel cord and reinforcement of the high-pressure hoses with a diameter up to 0.05 mm is made from the wire rod with a diameter of 5.5 mm by drawing with intermediate patenting and has high strength and ductility properties. The specified set of the properties are achieved through optimal heat treatment and formation of the structure of the finely dispersed perlite (sorbite, troostite) during the patenting process. The formation of the martensite, also the significant amount of the bainite and excess ferrite in the structure of the patented steel is not allowed. Existing patenting modes lead to formation of the bainite structure along with finely dispersed pearlite structures, shown by microstructural investigations. Depending on the heat treatment (patenting) modes, it is possible to formation not only different quantities, but also different types of the bainite, which have different effects on the mechanical properties of the patented wire and the technology elaboration. The aim of the research was to establish patterns of the influence of the processing temperature (patenting) on the mechanical properties of the patented high-carbon wire. In the entire studied range of the austenite transformation temperatures, bainite is formed along with sorbite, and a decrease in the patenting temperature increases the amount of bainite, as shown by the analysis of the mechanical properties and microstructure of the C80D2 steel samples after isothermal decomposition of the austenite at patenting temperatures of 610–530°C. The amount, morphology and distribution pattern of the bainite have a significant effect on the mechanical properties of the patented blank made of the high-carbon steel C80D2 at a patenting temperature below 560°C, when its proportion in the microstructure exceeds 10%.The most optimal combination of the mechanical properties and microstructures are achieved when patenting at a temperature of 590–560°C.