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Abstract
To overcome limitations such as defects and poor mechanical properties in laser cladding, the advantages of the application of the auxiliary field can be utilized. At present, the influence and mechanism of the electromagnetic compound field were widely investigated, but the optimization of the electromagnetic compound field was not reported. So, optimizing the electromagnetic compound field parameters is necessary. In this paper, the Inconel 625 cladding layers were prepared on HT300 by laser cladding with electromagnetic compound field assistance. Grey relational method was used to optimize the electromagnetic compound field parameters. The optimal electromagnetic field parameters were determined at the direction of Lorentz force up wared, pulse current strength 30 A, and magnetic field strength 200 mT to achieve the higher clad height, larger clad width, lower dilution rate, and higher microhardness. Results of validation experiment showed that all responses have been improved, clad width increased by 115.693 μm, clad height increased by 100.555 μm, microhardness increased by 82.57 HV, and the dilution rate decreased by 0.2116. The grey relational grade was 0.673, which is a 95% match compared to the grey relational grade of the prediction. It is concluded that the optimization of the electromagnetic field parameters is effective.
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