The invention discloses a bearing steel
wire rod and a production method thereof. The bearing steel
wire rod is prepared from, by
mass, 0.95-1.05% of C, 0.15-0.35% of Si, 0.25-0.45% of Mn,1.40-1.65% of Cr, 0.025% or less of P, 0.025% or less of S, 0.02-0.10% of Mo, 0.10-0.30% of Ni, 0.10-0.25% of Cu, 0.0012% or less of O, and the balance Fe and trace impurities. The production method comprises the following procedures of RH furnace refining,
continuous casting,
slow cooling, heating, dephosphorization post-rolling,
spinning and air patenting. According to the bearing steel
wire rod and the production method thereof,
fish eye fractures and
abnormal structure fractures in the rapid cooling process are prevented through control of the
smelting process; and by means of rolling control and cool control, the grain size, network
carbide and
pearlite interlamellar spacing of the rolled wire rod are controlled, a good spheroidizing annealing preparation structure is obtained, and the spheroidizing annealing time can be remarkably shortened.