| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.24 ( April 1991 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Progress of Diagnosis Techniques for the Cold Strip Processing Line Kichio Tada, Toshihiro Konishi, Satoshi Kasai, Tadashi Naitou, Hiroaki Kishida, Hiroaki Iguchi |
|
Synopsis : For the cold strip processing lines, the authors have developed diagnosis techniques in which information on product quality, such as sheet thickness, and information on operation are combined together with processing signals and machine conditions. The major diagnosis techniques are (1) diagnosis of welding performance, (2) diagnosis of leak in mechanical descaling pump. (3) diagnosis of cold strip mill (eccentricity of work roll and back up roll) and (4) diagnosis of automatic sheet gage control system for rolling reduction at the cold strip mill. These techniques coupled with fundamental diagnosis techniques for rotary machinery, hydraulic lubricant equipment, electric and control units have led us to the development of a new type diagnosis system in which the functions of automatic diagnosis and expert system are incorporated. This system has been introduced to the pickling line, cold strip mill, and continuous annealing line. The above introduction has contributed not only to the execution of early treatment of defective portions of the equipment but also to improvements in the accuracy of sheet thickness, prevention of rupture in welds, and stability in picking efficiency. This has furthermore brought about improvement in the accuracy of the equipment management control including an increase in CBM (condition based maintenance) rate and the like. |
| TextiPDF: 9p./432kbj |