Corrosion-resistant wear-resistant steel plate and preparation method thereof

• Main Authors: FU TIANLIANG, WANG ZHAODONG, PENG SIYUAN, DENG XIANGTAO
• Format: Patent
• Language: Chinese; English
• Published: 01.01.2021
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a corrosion-resistant wear-resistant steel plate and a preparation method thereof. The corrosion-resistant wear-resistant steel plate comprises the following chemical components in percentage by mass: 0.14-0.22% of C, 0.10-1.00% of Si, 0.1-1.0% of Mn, less than 0.015% of P, less than 0.005% of S, 3.00-6.00% of Cr, 0.00-1.50% of Ni, 0.00-0.80% of Mo, 0.02-0.06% of Als, 0.0008-0.005% of B, 0.0015-0.0040% of Ca and the balance of Fe and inevitable impurity elements, wherein Ca/S>/=1, and the volume fraction of a lath martensite structure in the steel plate is larger thanor equal to 95%. The novel steel plate with excellent corrosion and wear resistance in an acid environment is prepared through an alloy component design and the combination of a heat treatment process, the corrosion and wear resistance of the novel steel plate is 2.5-3.0 times that of existing Brinell hardness martensite wear-resistant steel under the acid working condition with a pH value of 4-5,the corrosion-resistant w