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Electroslag casting (ESC) is an important method to produce high quality castings. In this study, the ESC up-pulling inner mold method (EUPIM) was used to produce hollow cylindrical castings with the multiple consumable electrodes. The radial deformation, the axial and radial internal stress of the inner mold, and the axial internal stress of the slag shell were analyzed using the finite element method (FEM) with the aid of ANSYS software. The ProCAST software was used to calculate the specific heat, heat conductivity and density curve of Cu. Simulation results show that the radial deformation, the axial and radial internal stress of the inner mold, and the axial internal stress of the slag shell near the slag-metal interface of hollow cylndrical casting gradually increase from 0 s to 360 s after the ESC starting (slagging) process but before applying the up-pulling force. The suitable initial up-pulling moment of the inner mold is at around 180–198 s after the starting process.

The Fe-based amorphous metallic matrix coating (Fe-AMMC) was fabricated with the powder mixtures of Fe-based metallic glass synthesized with industrial raw materials, NiCr alloy and WC particle by high velocity oxy-fuel (HVOF) spraying. The corrosion resistance of Fe-AMMC was investigated by potentiodynamic polarization tests in 1 mol/L HCl, NaCl, H 2 SO 4 and NaOH solutions, respectively. The surface morphologies corroded were observed by SEM. The results indicate that Fe-AMMC exhibits excellent corrosion resistance, higher corrosion resistance than 304L stainless steel in the chloride solutions. The low corrosion current density and passive current density of Fe-AMMC with a wide spontaneous passivation region are about 132.0 μA/cm 2 and 9.0 mA/cm 2 in HCl solution, and about 2.5 μA/cm 2 and 2.3 mA/cm 2 in NaCl solution. The excellent corrosion resistance demonstrates that Fe-based amorphous metallic matrix powder is a viable engineering material in practical anti-corrosion and anti-wear coating applications.