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已经在实验室的规模下模拟了轧辊钢中所发现的这种沟状型的偏析。在本文所述的受控状态下,合金成分决定了是形成标准的沟状偏析,还是形成倒A型偏析。成分的影响是通过固液共存区中的密度梯度而作用的。实验室的结论,可以引伸到工业规模的铸造过程中,而且表明密度的差异同“条斑”的形成有关。通过采用隋形的挂砂金属型连同正确的成分匹配,就可以将条斑的形成限制到最低限度。后者还借助于钨的使用。
This groove-type segregation found in roll steels has been modeled at the laboratory scale. Under the controlled conditions described herein, the composition of the alloy determines whether to form standard trench segregation or to form inverted A segregation. The effect of the composition is through the density gradient in the solid-liquid coexisting zone. The laboratory’s conclusion can be extended to industrial-scale casting and shows that density differences are related to the formation of “streaks.” Through the use of Superabrasion metal with the correct composition of the match, the formation of streaks can be limited to a minimum. The latter also relies on the use of tungsten.