The invention discloses a process for producing a
tire bead wire by using a 80 # steel
wire rod, the 80 # steel
wire rod is used as a
raw material, and the
wire rod comprises the following components in percentage by
mass: 0.80-0.82% of C, 0.17-0.20% of Si, 0.45-0.50% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S, less than or equal to 0.03% of Cr, less than or equal to 0.03% of Ni, less than or equal to 0.04% of Cu and the balance of Fe and inevitable impurities. Compared with the prior art, in the production of the
tire bead steel wire, the 80 # steel wire rod is used as a
raw material, the cost is reduced on the premise of meeting
customer requirements, the 80 # steel wire rod is lower in cost compared with a
tire bead grade special wire rod (C82DA), the content of
manganese and
silicon elements is increased, and the heat treatment performance of the tire bead steel wire is remarkably improved; the drawing pass changes along with the specification of a product, the temperature in a plating solution in the
chemical plating procedure, the concentration of Cu < 2 + > / Sn < 2 + >, the take-up speed, the
tempering temperature and other procedures are adaptively adjusted, the drawing resistance is reduced, the
diffusion efficiency of a plating layer is improved, meanwhile, the hot
brittleness of the steel wire is eliminated, the
toughness and strength of the steel wire are improved, and the
energy consumption is reduced under the optimal production condition.