Effect of wire rod size and its packing density on the tensile strength deviation of high carbon steel wire rod in the Stelmor process

摘要

In the present study, an attempt was made to minimize the tensile strength deviation in high carbon steel wire rods manufactured by the forced air cooling, i.e., Stelmor cooling. The efect of the packing density of wire rods on the cooling conveyor, which is often ignored in the consideration of the tensile strength deviation sources, was especially taken into account. The simulation results for the packing density of wire rods on the cooling conveyor revealed that, regardless of wire rod size, the edge of the packed rings exhibited higher packing density than the center. In addition, it was found that the packing density at the edge of rings increases with increasing wire rod size. The redistribution of the forced air across the cooling conveyor based on the packing density simulation was performed via damper angle adjustment and its effect on reducing the tensile strength deviation was discussed.