The invention relates to a preparation process and a device of a nano-particle reinforced
bimetal composite, the nano-particle reinforced
bimetal composite comprises the following chemical components by weight percent: 6-25% of Cr, 4-18% of Ni, 1.0-4% of Mo, 1.0-1.8% of Si, 1.2-3% of Mn, 0.4-2.2% of B, 0.1-1.2% of MgO, 0.2-2% of CaF2, 0.2-0.7% of C, 0.2-0.8% of Nb, not more than 0.9% of one or the combination of CeO2, Y3O2 and La2O3, 0.0-0.8% of Co, and the balance of Fe, and mixed particles of nano-sized carbides, nitrides, borides or carbonitrides are added in
alloy powder. The
vacuum induction melting and the cladding processes and equipment are adopted for melting and cladding the mixture on a workpiece, the thickness of a cladding layer is 0.1-25mm, the cladding layer contains 1%-50% of nano-reinforcing particles of one or the combination of the carbides, the nitrides, the borides and silicides, and the cladding layer has special performances of
wear resistance,
corrosion resistance, electrical
conductivity, self-
lubrication performance and the like. A
coating layer and a base material form the metallurgical bonding, thereby having high
bonding strength, overcoming the drawbacks in various
coating processes at home and abroad, leading the
coating layer to avoid the defects of shrinkage cavities, inclusion,
cracking, shedding and the like and having the advantages of high
heating temperature,
fast speed, high production efficiency, small
energy consumption, simple preparation process and low cost.