High-cleanliness steel for high-pressure oil cylinder piping and preparation method thereof

The invention discloses high-cleanliness steel for high-pressure oil cylinder piping and a preparation method thereof, and the high-cleanliness steel for high-pressure oil cylinder piping is characterized by comprising the following components in percentage by weight: 0.04 to 0.1 percent of C, 0.05 to 0.15 percent of Si, 0.5 to 1.5 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.005 percent of S, 0.02 to 0.06 percent of Als, 0.05 to 0.10 percent of Ti, 0.02 to 0.05 percent of Nb, 0.002 to 0.005 percent of N and the balance of Fe and other inevitable impurities. The invention relates to the technical field of steel smelting, in particular to high-cleanliness steel for high-pressure oil cylinder piping and a preparation method of the high-cleanliness steel. 本发明公开了一种高洁净度高压油缸配管用钢及其制备方法，所述的高压油缸配管用钢，其特征在于，按重量百分比，成分配比为：C：0.04-0.1%，Si：0.05-0.15%，Mn：0.5-1.5%，P≤0.03%，S≤0.005%，Als：0.02-0.06%，Ti：0.05-0.10%，Nb：0.02-0.05%，N：0.002-0.005%，余量为Fe和其他不可避免杂质。本发明涉及钢铁冶炼技术领域，具体是指一种高洁净度高压油缸配管用钢及其制备方法。