Processing optimization and properties of laser cladding Fe90 coating

Concerning on surface worn typical vehicle-parts made of 18Cr2Ni4WA case-hardened steel,a remanufacturing process of laser cladding Fe90 alloy powders was investigated.To analyze the dilution,the SN ratio and variance analysis methods were adopted.It indicated that the significant factors to dilution ratio are laser power and powder feed rate,the quantified relation between the processing parameters and dilution ratio was obtained simultaneously.And the principle of high microhardness was analyzed with synthesis on microstructure and phase components.Results showed that laser cladding Fe90 alloy to remanufacture worn parts can not only restore the size but also enhance the microhardness greatly,which represents an excellent service performance.