The authors made experiments to simulate the primary rolling process of Ben Xi Steel Worksin rolling 10.7t rimmed ingots. The experiments for determining optimum dimensions of the truncated bottom was designedon the basis of orthogoal method.

• 着重阐述模拟本钢初轧机轧制工艺条件；轧制10.；7t沸腾钢锭并采用正交设计来确定钢锭最佳凸底几何尺寸的试验。