Study on the optimum technological parameters of laser cladding applied to hydraulic prop
semanticscholar(2018)
摘要
In this paper, Fe-based composite coatings were fabricated by laser cladding on 45# steel substrate. The comprehensive e ects of di erent parameters on the properties were studied. Results indicated that the coatings were mainly consisted of [Fe-Ni], Fe-Cr, Co3Fe7, Fe0.6Cr1.7Ni1.2Si0.2Mo0.1, Cu9Al4. The microstructure and hard particle were both critical to improve the properties even with the same original powder. Compared with the substrate, the hardness and corrosion resistance were enhanced obviously. The optimum parameters were identied as??ES=7.91KJ/cm 2, P=1900W, V=6mm/s, which can not only attained the best properties but also realized faster cladding e ciency.
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