液压纠偏系统简介（Introduction of hydraulic correction system）.docVIP

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液压纠偏系统简介（Introduction of hydraulic correction system）.doc

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液压纠偏系统简介（Introduction of hydraulic correction system）

液压纠偏系统简介（Introduction of hydraulic correction system） Brief introduction of hydraulic correction system I. overview: With the improvement of the speed of the modern rolling mill, the transmission speed of the strip is greatly improved, so that the speed of the corresponding auxiliary equipment must also be improved. In order to ensure the operation near the strip in the rolling process in the rolling center line, and ensure the coiling reel, neat edge, so as to avoid damage due to deviation from the center line of strip rolling scraping device or strip edge, affect product quality and reduce the number of accidents, the amount of shear band edge. Therefore, the border control of strip steel and centering control on the machine set are indispensable links in continuous operation of strip. The causes of deviation of strip rolling center line there are many, mainly inclined rolls, strip thickness uneven, roll strip ratio, roller type structure, and the width of the strip tension, if unsuitable parameters will cause the deviation of strip rolling center line, so the strip off center line during operation it is inevitable and must be controlled. There are four commonly used control modes: 1, mechanical: such as the automatic centering of the double cone roller, guide rail, etc.. 2. Electric type: photoelectric detector is used to send the deviation signal to the control cabinet, so that the DC motor can be rectified. 3, gas and liquid way: using pneumatic test nozzle, through the diaphragm control jet pipe injection of hydraulic pressure to promote the slide valve control cylinder deviation correction. 4 、 photoelectric liquid way: photoelectric detector is used to amplify the deviation signal by amplifier, and the electrohydraulic servo valve is controlled to drive the cylinder to rectify deviation. The four kinds of control methods, the first three kinds of correction speed is slow, can not meet the needs of modern high-speed production. The fourth control modes is ele