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将复合材料层涂料和耐火涂料依次粘附在可发性聚苯乙烯(EPS)制成的铸件模型上,然后用干砂振动造型、浇注,制备Si C/铁基表面复合材料,并对其金相组织与性能进行研究。结果表明,不同目数Si C颗粒制备的表面材料与基体结合良好。该复合材料的表层含碳量为5.5%~6%,含硅量为1%~1.6%,含铬量为6%~7.5%。随距表层距离的增加,上述元素含量逐渐降低,距表层6 mm左右时,与基体成分接近。制得表面复合材料的耐磨性比基体材料最大提高了约2.57倍。
The composite material coating and refractory coating are sequentially adhered to a cast model made of expandable polystyrene (EPS), and then sand dry molding is used to shape and cast the Si C / iron-based surface composite material, Metallography and performance research. The results show that the surface materials prepared by Si C particles with different mesh number have good bonding with the matrix. The composite material has a surface carbon content of 5.5% -6%, a silicon content of 1% -1.6% and a chromium content of 6% -7.5%. With the distance from the surface increases, the above elements gradually reduce the surface layer from 6 mm, and the composition of the matrix close. The wear resistance of the prepared surface composites is about 2.57 times greater than that of the matrix material.