| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.34 ( March 1996 ) Highly Efficient Production and Application of sheet Produts,and Application Development in Open System's Age ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Techniques of Automatic Operation in Continuous Galvanizing Line Takanori Adachi, Yasuo Tomura, Takayuki Yoshioka |
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Synopsis : Operation at the entry section, zinc coating weight control, and galvannealing control are main techniques of automatic operation in continuous galvanizing lines at Kawasaki Steel. These techniques contribute to quality improvement and labor saving. The coil transport and threading equipment in the entry section have been automated by a process computer. Automatic zinc coating weight control, which uses a physical model, has achieved high accuracy of a standard deviation of 3.0 g/m2 of the zinc coating weight, when the zinc coating weight target is changed. Automatic galvannealing control, which uses emissivity changes when Fe diffuses in the zinc coating layer, has also reduced the standard deviation of the Fe contents by half, achieving a high accuracy of 0.3%. |
| TextiPDF: 8p./331kbj |