The invention provides abrasion-proof sheet
metal and a preparation method thereof, and relate to the technical field of production of abrasion-proof materials. The abrasion-proof sheet
metal is prepared from the following components in percentage:1.9-3.1% of C, 0.4-0.6% of Si, 0.2-0.8% of Mn, 0.2-0.6% of Mu,11.5-13.5% of Cr, S which is smaller than or equal to 0.10%, P which is smaller than or equal to 0.10%, 0.5-1.5% of Mo, 0.05-0.15% of V, 0.1-1.0% of Ti, 0.3-1.0% of Cu, and the balance being Fe. The preparation method comprises the following steps of melting raw materials; performing constant-temperature pouring; performing heat treatment, heating the sheet
metal shaped through pouring for 3-5 hours at the temperature of 700-720 DEG C, performing warming until the temperature is 800-900 DEG C, performing
quenching in
quenching oil for 7-10 minutes at the temperature of 90-100 DEG C, and then performing
tempering for 6-10 hours at the temperature of 300-350 DEG C; and performing heat treatment once again, putting the sheet metal obtained after the heat treatment in high-temperature-resistant
silicone oil for soaking for 3-5 hours,
fishing out the sheet metal, and removing external
silicone oil. The abrasion-proof sheet metal disclosed by the invention is
impact-resistant, long in service life, and good in abrasion resistance, so that the abrasion-proof sheet metal can be used in serious environment, and can
resist strong
corrosion and ultrahigh temperature.