Effect of Air Temperature on the Thermal Behavior and Mechanical Properties of Wire Rod Steel during Stelmor Cooling

The effect of air temperature (Ta) on the thermal behavior and mechanical properties steel wire rods is investigated during Stelmor cooling process using a numerical model an offline simulator. During process, rod measured in summer (28°C) higher than that winter (4°C). average difference between seasons approximately 5°C. In addition, tensile strength (TS) lower winter: TS 19 MPa. different rates depending Ta are associated with simple instead variations thermophysical temperature. variation rate affected significantly by forced convection because absolute value 10 times natural convection, heat flux radiation almost unchanged Ta. convective transfer coefficient decreases Reynolds number owing to decrease density increase kinematic viscosity as increases. deviation increases small diameter fabricated high amount applied velocity It concluded working conditions necessary Ta, particularly when small, blower power high, laying head process.