In order to keep the productive progress smoothly and obtain high size precision, good performance product, the rolling craft parameter must be simulated accurately.
为了保证轧制生产顺利进行和获得尺寸精度高、性能好的产品，必须对半连轧生产过程的轧制工艺参数进行准确地预测。
The practical production show that the high size precision round bar can be rolled by arranging the sizing passes on remained stands without on-line hot sizing mill.
在暂不具备在线热定径设备情况下，采用空余机架布置定径孔型可生产高精度圆钢。
The rudder device keyway to hole keyway , Hole of the conical hole, Not run through the holes, Moreover structure of two key connection , Large size , High precision machining.
舵装置的键槽是内孔键槽，孔为锥孔、盲孔，而且采用双键联接结构，尺寸大，加工精度较高。
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