METHOD OF PRODUCING HOT-ROLLED WIRE Russian patent published in 2012 - IPC B21B1/16 

FIELD: process engineering.

SUBSTANCE: proposed method comprises metal hot rolling, cooling and coiling at preset temperatures at separate process steps. Optimum relationship between strength and plastic properties of rolled wire is ensured by rolling steel containing 0.58-0.89 wt % of carbon, 0.45-0.66 wt % of manganese, 0.1-0.25 wt % of silicon and other elements with carbon equivalent C_e=0.67…0.93. Temperature ahead of roughing stands is selected from relationship: T_rough~(958.0…957.93)-3.91δ+0.06σ_t. Temperature behind water cooling section t_cool=(706.48…706.40)+96.9C_e+2.57δ, while coiling temperature t_coil=(236.16…236.15)+2.17δ+46.09C_e, C_e=0.83 [C]+0.36 [Si]+0.18 [Mn]+0.31 [S]+0.32 [P]+0.38 [Al]+0.19 [Cr]+0.17 [Ni]+0.16 [Cu], where [C], [Si], [Mn], [Cr], [Ni], [S], [P], [Al], [Cu] means content of said elements in steel, wt %; σ_t is temporary resistance to deformation, and δ is elongation.

EFFECT: higher consumer properties.

1 ex