Bar for high-toughness wear-resistant ball and production method thereof

The invention relates to a bar for a high-toughness wear-resistant ball. The bar comprises the following components in percentage by weight: 0.50%-0.70% of C, 1.50%-2.20% of Si, 0.50%-1.00% of Mn, less than or equal to 0.025% of P, less than or equal to 0.015% of S, 0.50%-1.00% of Cr, 0.01%-0.20% of Ni, 0.01%-0.20% of Cu and the balance of Fe and inevitable impurities. The hardenability performance of the tail end of the bar meets the requirements that the hardness of the position 1.5 mm away from the surface is 55-65 HRC, the hardness of the position 9 mm away from the surface is 52-62 HRC, the hardness of the position 20 mm away from the surface is larger than or equal to 34, and the bar shows good hardness and has good abrasion resistance. 本发明涉及一种高强韧耐磨球用棒材，所述的棒材成分按重量百分比为：C：0.50％～0.70％，Si：1.50％～2.20％，Mn：0.50％～1.00％，P≤0.025％，S≤0.015％，Cr：0.50％～1.00％，Ni：0.01％～0.20％、Cu：0.01％～0.20％，余量为Fe和不可避免的杂质。本发明棒材末端淬透性性能满足距表面1.5mm处位置硬度55～65HRC，距表面9mm位置硬度52～62HRC，距表面20mm处位置硬度为≥34，展现出良好硬度，具有良好耐磨性。