Drawing reducing type tire cord steel and preparing method thereof

The invention discloses drawing reducing type tire cord steel. The drawing reducing type tire cord steel comprises, by weight percent, 0.59%-0.64% of C, 0.36%-0.40% of Si, 0.10%-0.14% of Mn, smaller than or equal to 0.01% of P, smaller than or equal to 0.01% of S, 0.10%-0.25% of Cr, 0.0005%-0.0015% of B and the balance Fe and inevitable impurities. By means of the drawing reducing type tire cord steel, the carbon content of common-strength (NT) tire cord steel is controlled to be in the hypoeutectoid steel composite range, the means of silicon element strengthening, austenite grain refining and the like are combined, the drawing technology is effectively optimized (simplified), the quality and stability of a steel wire rod are improved, the ultra-thin-diameter tire cord steel is manufactured, steel wires with different strength grades can meet user requirements, and the production difficulty and cost of steel enterprises are obviously reduced. 本发明公开了一种减免拉拔型帘线钢，其化学成分按重量百分比计为C 0.59～0.64％、Si 0.36～0.40％、Mn 0.10～0