Laser cladding powder for 45 # steel at high temperature

The invention discloses laser cladding powder for 45 # steel at high temperature, and belongs to the field of laser cladding materials. The high-temperature laser cladding powder for the 45 # steel is prepared from the following chemical components in percentage by mass: 0.2 to 0.3 percent of C, 2.0 to 3.0 percent of B, 1.0 to 2.0 percent of Si, 2.0 to 5.0 percent of Mo, 0.01 to 0.25 percent of Cu, 0.5 to 0.8 percent of Mn, 5.0 to 8.0 percent of Ni, 15.0 to 18.0 percent of Cr, 0.2 to 0.3 percent of V, 0.2 to 0.3 percent of W, 0.005 to 0.016 percent of rare earth elements and the balance of Fe and inevitable impurities, and has better hardness, wear resistance, self-lubricating property, high-temperature corrosion resistance, metallurgical bonding capacity, wettability and the like; and the method has good application value. 本发明公开了一种45#钢高温用激光熔覆粉末，属于激光熔覆材料领域。所述45#钢高温用激光熔覆粉末按质量百分比计，包含以下化学成分：C:0.2-0.3％，B:2.0-3.0％，Si:1.0-2.0％，Mo:2.0-5.0％，Cu:0.01-0.25％，Mn:0.5-0.8％，Ni:5.0-8.0％，Cr:15.0-18.0％，V:0.2-0.3％，W:0.2-0.3％，稀土元