Martensite high-temperature wear-resistant steel and production method thereof

• Main Authors: WANG QINGYUN, YAO ZHOU, XU GUIXI, LIU HONGYAN, WANG ZHAODONG, CHEN ZIGANG, DENG JIANJUN, DU QIMING, ZHANG WEIPAN, DENG XIANGTAO, WANG CHUNMIN, LYU DEWEN
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2021
• 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 discloses martensite high-temperature wear-resistant steel and a production method thereof. The martensite high-temperature wear-resistant steel comprises the following chemical components in percentage by weight: 0.18%-0.24% of C, 0.1%-0.35% of Si, 0.5%-1.1% of Mn, not greater than 0.013% P, not greater than 0.004% of S, 0.03%-0.06% of Als, 0.025%-0.055% of Nb, 0.02%-0.04% of V, 0.01%-0.025% of Ti, 0.1%-0.35% of Cr, 0.25%-0.45% of Mo, 0.0005%-0.0018% of B, 0.003%-0.0045% of N, not greater than 1.7 ppm of H, 0.002%-0.004% of Ca and the balance of Fe and inevitable impurities. Inthe production method, a temperature-controlled and speed-controlled quenching process and a sub-temperature quenching heating process are adopted; and interval cooling is adopted in the quenching cooling process. The martensite high-temperature wear-resistant steel has good mechanical properties under a high-temperature service condition. 一种马氏体高温耐磨钢其化学成分的重量百分比为C：0.18-0.24%，Si：0.1-0.35%，Mn：0.5-1.1%，P≤0.013%，S≤0.004%，Als：0