Influence of Casting Temperature of Low Carbon Steel on the Interface Layer of Composite Protective Plate

Abstract

Based on the liquid/semi-solid bimetal composite casting technology, the low carbon steel/the high chromium casting iron wear-resistant plate was prepared, and the casting temperature of the low carbon steel was investigated on the microstructure and the mechanical properties of the bimetal composite plate. The action of the reasonable casting temperature can make the two kinds of metals play to their excellent properties, and not only has the high wear resistance, but only guarantee to achieve strong match between two kinds of metals. The results showed that the low carbon steel at different casting temperature was poured into the mold, and its upper surface was in the semi-solid state. The semi-solid contact areas between the low carbon steel and the high chromium casting iron have evolved into into the interface layer, and there is no porosity and inclusion in the interface layer . The metallurgical bonding quality is good, and the Rockwell hardness is about 50∼52HRC, and tensile strength of is about 550∼610MPa.