The invention relates to a method for decreasing decarburized
layers on surfaces of high-carbon-
chromium bearing steel wires. The specific process comprises the steps that steel is molten to obtain
molten steel which is subjected to
continuous casting to form bearing steel, the bearing steel is subjected to
continuous casting to form a bloom, and the bloom is rolled into square hot rolling billet with the section being 160mm*160mm; the surface of the square hot rolling billet is ground, and the
grinding amount is 0.5-2mm; the square hot rolling billet is heated in a
heating furnace, micro
positive pressure control is adopted in the furnace, the pressure in the furnace is 5-40 Pa, the weak oxidizing
atmosphere is adopted in the furnace, and the air-fuel ratio is adjusted to enable the
oxygen remaining volume in the furnace to be 0-2%; and the
spinning temperature is controlled to be 800-850 DEG C, cooling is performed at the rate of 5-10 DEG C / s after
spinning to reduce the temperature to 500-600 DEG C, and then
slow cooling is performed to obtain hot-rolled wire rods. According to the bearing steel wires obtained through the method, the surfaces are free of fully decarburized
layers, and the depth of half decarburized
layers is smaller than 50 microns; meanwhile, good component uniformity and internal structure uniformity are achieved, and the product quality requirement of downstream customers can be met; besides, the
surface grinding amount of the downstream customers can be reduced, the cost is lowered, and a certain competitive
advantage is provided.