Calculation Model and Evolution Law of Temperature Field and Phase Precipitation along the Entire Line of Cold Heading Steel SCM435 High-Speed Wire Rod
Forming and Phase Transition|更新时间:2025-09-11
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Calculation Model and Evolution Law of Temperature Field and Phase Precipitation along the Entire Line of Cold Heading Steel SCM435 High-Speed Wire Rod
Tan Chengnan,Gu Zuohong,Zhou Min,et al.Calculation Model and Evolution Law of Temperature Field and Phase Precipitation along the Entire Line of Cold Heading Steel SCM435 High-Speed Wire Rod[J].Special Steel,2025,46(05):53-59.
Tan Chengnan,Gu Zuohong,Zhou Min,et al.Calculation Model and Evolution Law of Temperature Field and Phase Precipitation along the Entire Line of Cold Heading Steel SCM435 High-Speed Wire Rod[J].Special Steel,2025,46(05):53-59. DOI: 10.20057/j.1003-8620.2025-00016.
Calculation Model and Evolution Law of Temperature Field and Phase Precipitation along the Entire Line of Cold Heading Steel SCM435 High-Speed Wire Rod
Cold heading steel SCM435 high-speed wire is easy to undergo bainite transformation in the cooling stage. It is very important to explore the temperature field and phase precipitation process in the Stelmor air -cooling line for the quality control of the final product . By establishing the finite difference equation of temperature field, heat transfer coefficient model and phase precipitation equation, the bridge between the rolling production process and the rolling piece temperature and organization relationship is built, and the calculation of the temperature field and phase precipitation evolution law of SCM435 rolled cold heading steel is realized.The calculation results show that the initial billet enters the rolling line at a temperature of 900 ℃, with an opening surface temperature of 854 ℃ and a surface temperature of 710 ℃ when entering the spinning machine. The temperature difference between the core and surface is 41 ℃, and the maximum temperature drop through water is 234 ℃. During the cooling stage of the air-cooled line, the phase precipitation curves under two different cooling conditions were calculated by adjusting the opening and closing of the insulation cover. The results showed that slow cooling can significantly promote the precipitation of ferrite and pearlite while suppressing the precipitation process of bainite.
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