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利用氩弧熔覆技术,选择合适的工艺参数,在Q235钢材表面熔覆了铁基合金耐磨涂层。通过金相显微镜和SEM分析了熔覆涂层的显微组织,并测试了涂层的显微硬度和耐磨性。结果表明,在Q235钢表面制备了以马氏体组织和γ-(Fe-Cr-Ni-C)合金固溶体为基体,以(Cr,Fe)7C3、Fe3C、Fe2B等化合物为增强相的合金涂层;涂层的显微硬度可达600 HV;涂层的耐磨性较基体提高近8倍。在低碳钢表面熔覆一层耐磨材料,既保留了低碳钢较高的塑、韧性,又提高了表面层的硬度和耐磨性。
The use of argon arc cladding technology, select the appropriate process parameters, the Q235 steel cladding iron-based alloy wear-resistant coating. The microstructure of the coating was analyzed by metallographic microscope and SEM, and the microhardness and wear resistance of the coating were tested. The results show that the alloy coated with (Cr, Fe) 7C3, Fe3C, Fe2B and other compounds with martensite and γ- (Fe-Cr-Ni-C) Layer; the microhardness of the coating is up to 600 HV; the abrasion resistance of the coating is nearly 8 times higher than that of the substrate. Cladding a layer of wear-resistant material on the surface of mild steel not only retains the high plasticity and toughness of mild steel, but also improves the hardness and wear resistance of the surface layer.