摘要:
The present invention provides a manufacturing apparatus of a hot-rolled steel sheet capable of cooling control of a steel sheet even when disposing a cooling device capable of cooling from inside a finishing mill.The manufacturing apparatus of a hot-rolled steel sheet comprises: an immediate rapid-cooling device capable of spraying cooling water, at least a part thereof being disposed inside a final stand in the row of hot finishing mills; a device for measuring a temperature on an entry side of a final stand; a device for measuring a steel sheet passing speed; a device for predicting a rapid-cooling stopping temperature which calculates a predicted rapid-cooling stopping temperature; and an immediate rapid-cooling control device which corrects the water supply volume or water supply pressure of the immediate rapid-cooling device such that the predicted rapid-cooling stopping temperature matches a targeted rapid-cooling stopping temperature.
摘要:
A system for changing a roller, has a system for determining parameters which characterize the identity and/or the operating state of a roller of an industrial plant, at least one sensor arranged on the roller for furnishing parameters being designed such that the furnished identity parameter of the roller is detectable, and a reading device designed for reading out detected parameters from the sensor without contact. The sensor is also designed to detect an operation state parameter of the roller and can be operated at a roller temperature of at least 150 C. In a rollerchanging wagon on which a roller can be mounted in such a manner that the roller can be guided into or out of a roll stand, the sensor is arranged on the roller for the purpose of furnishing and/or detecting parameters. The process security for an industrial plant can be increased by such a system.
摘要:
The present invention relates to a system and method for rolling a seamless tube. The plant comprises a main rolling mill with adjustable rolls for mandrel-rolling a semi-finished tube. The plant also comprises a fixed-roll extracting/reducing mill positioned downstream of the main rolling mill. The extracting/reducing mill is designed to extract the semi-finished tube from the mandrel and reduce its diameter to a predetermined value close to that desired for the finished tube. Finally, the plant comprises a adjustable-roll sizing mill. The sizing mill is positioned downstream of the extracting/reducing mill. This sizing mill is designed to adjust the radial position of the rolls and define the diameter of the outgoing tube.
摘要:
The present invention provides a method for cooling a hot-rolled steel strip after a finishing rolling in which a transportation speed varies, the method including: setting a transportation-speed changing schedule on the basis of a temperature of a steel strip before the finishing rolling and a condition of the finishing rolling; performing a first cooling in which the hot-rolled steel strip is cooled under a film boiling state in a first cooling section; performing a second cooling in which the hot-rolled steel strip is cooled with a water amount density of not less than 2m3/min/m2 in a second cooling section; and coiling the hot-rolled steel strip, in which a cooling condition is controlled in the first cooling so as to satisfy 0.8≦(T2a′−T2a)/ΔTx≦1.2.
摘要翻译:本发明提供了一种在精轧后对运输速度变化的热轧钢带进行冷却的方法,该方法包括:根据精轧前的钢带的温度来设定运输速度变更表 和精轧的条件; 进行第一冷却,其中在第一冷却段中将热轧钢带在薄膜沸腾状态下冷却; 进行第二冷却,其中在第二冷却段中热水钢带的水量密度不低于2m 3 / min / m 2; 并卷取热轧钢带,其中在第一冷却中控制冷却条件以满足0.8< NlE;(T2a'-T2a)/&Dgr; Tx≦̸ 1.2。
摘要:
An apparatus for measuring a temperature of a material includes a body unit disposed on an exit side of a heating furnace; a temperature measuring unit installed on the body unit and constructed to measure a temperature of a material which is extracted from the heating furnace; a foreign substance removing unit installed on the body unit and constructed to inject a fluid toward the material so as to remove foreign substances adhered to the material; and a moving unit installed on the body unit and constructed to move the temperature measuring unit.
摘要:
A metallic strip edge flatness monitoring system for a rolling mill has one or more thermal imaging devices (105) arranged to monitor temperature or temperature variances across at least one region of interest (108, 115) in the rolling mill. The monitored temperature or temperature variances are input to a flatness control system (107) and a control signal is generated in the flatness control system to modify actuation of actuators (106) in the rolling mill. The region of interest (108, 115) has a width of less than half the width of the metallic strip (101) and has a region on each side of the strip. The total width monitored is less than half the total width of the metallic strip.
摘要:
A method of monitoring the physical state of a hot-rolled sheet or hot-rolled strip while controlling a plate rolling train for the reversing working a hot-rolled sheet or hot-rolled strip is disclosed. For the reversing rolling of the hot-rolled sheet or hot-rolled strip a rolling stand is provided. At a starting point, an initial state of the hot-rolled sheet or hot-rolled strip in a model is determined, from which state at least one physical state variable is derived. Further, a cyclical updating of the state during the working of the hot-rolled sheet by using the model of the hot-rolled sheet or hot-rolled strip and the plate rolling train is provided, wherein monitoring of the path of the hot-rolled sheet or hot-rolled strip and operating parameters influencing and/or reproducing the state are taken into account.
摘要:
Quality of a wire or rod is controlled in a rolling mill having a succession of roll stands spaced apart in a workpiece-travel direction by a method having the first step of, before rolling a wire or rod, statically measuring a sample of at least one wire or rod with typical real roll flaws and storing the flaw data in standard format in a control computer. A single cross-sectional shape or, if there is noise, an average of a plurality of averaged cross-sectional shapes are stored standardized as polar coordinates. During actual rolling of a wire or rod its actual-shape is continuously measured and actual-shape data is generated. A similarity analysis is continuously effected by comparing the flaw data in standard format with the actual-shape data of the wire or rod being rolled. When the actual cross-sectional shape data corresponds to the flaw data, an alarm is generated.
摘要:
The invention relates to a flatness measurement and control system for metal strip, which makes it possible to obtain improved strip or coil quality by a simple and effective measurement of departures from flatness and to control the finishing parameters through the evaluation of a line pattern on the strip surface or on the end face of a coil as it is coiled.
摘要:
A temperature sensor used to control a steel rolling mill includes a housing arranged adjacent to the mill in which a temperature detector is arranged. The detector generates a signal corresponding to a detected temperature. A microprocessor receives the signal and processes it in accordance with a programmed characteristic. The processed signal is delivered to an output switch which produces a control signal for controlling the delivery of roll material to a roller of the rolling mill.