Method for improving surface quality of cold heading steel wire rod

The invention discloses a method for improving the surface quality of a cold heading steel wire rod, and belongs to the technical field of metallurgy. According to the method, the average thickness of oxide skin of a continuous casting blank is controlled to be 0.25-0.3 mm. And the oxide skin is generated specifically by controlling the heat preservation temperature of a continuous casting blank to be greater than or equal to 900 DEG C and the heat preservation time to be not less than 40 minutes. According to the method, industrial oxide skin thickening of the original blank is achieved through the pouring waste heat of the continuous casting blank, so that the defects on the surface of the blank form oxide skin falling, the technological process is shortened, the production cost can be reduced, and the low-carbon and environment-friendly requirements are met. 本发明公开了一种提高冷镦钢盘条表面质量的方法，属于冶金技术领域。该方法为控制连铸坯料的氧化皮的平均厚度为0.25~0.3mm。所述氧化皮的生成具体通过控制连铸坯料的保温温度≥900℃，保温时间为不小于40min。本发明通过连铸坯料的浇注余热，实现原始坯料工业化氧化皮增厚，从而使其表面的缺陷形成氧化皮