| 摘要 |
Disclosed is an abrasion resistant steel plate, having the following chemical composition (weight%): C: 0.22 - 0.35%, Si: 0.10 - 0.40%, Mn: 0.60 - 1.35%, Rho <= 0.015%, S <= 0.010%, Nb: 0.010 - 0.040%, Al: 0.010-0.080%, B: 0.0006 - 0.0014%, Ti: 0.005-0.050%, Ca: 0.0010 - 0.0080wt.%, V <= 0.080%, Cr <= 0.60%, W <= 1.00wt.%, N <= 0.0080%, O <= 0.0060%, and H <= ０.0004%, with 0.025% <= Nb + Ti <= 0.080%, 0.030% <= Al + Ti <= 0.12%, and the balance being Fe and inevitable impurities. A process for manufacturing the abrasion resistant steel plate comprises steps such as smelting, casting, rolling and directly cooling after rolling. The abrasion resistant steel plate obtained with the above components and process has a high strength and hardness, good low temperature toughness, and an excellent machining performance, and is suitable for devices in engineering machinery and mining machinery susceptible to wear, such as a clamshell, a scraping transporter, etc. |
