遠心鋳造法における高クロム鋳鉄の凝固組織に及ぼす回転軸角度の影響

抄録

  The centrifugal casting method is widely applied to the manufacture of rolling mill roll. It is roughly divided into vertical type, incline type, and horizontal type according to the angle of rotation axis. In this research, the influence of the rotation angle on the solidified structure of high chromium cast iron, which is a typical roll material, was studied. For the vertical type and large angle conditions, the dendrite grows, the columnar crystal region expands, and the inner segregation zone disappears. For the horizontal type and small angle conditions, the rotation force acts vertically in the direction of solidification to the molten metal and dendrite growth is suppressed. Segregation in the columnar crystal zone is also likely to occur. In low temperature casting, the influence of rotation angle on the solidification structure is small.