Electromagnetic regulation and control roller for improving edge drop of cold-rolled sheet strip

Abstract

The invention relates to an electromagnetic regulation and control roller for improving the edge drop of a cold-rolled sheet strip, columnar grooves are symmetrically formed in the ends of the roller, a combined annular electromagnetic rod is mounted in the grooves, and the combined annular electromagnetic rod consists of an electromagnetic rod component with a boss and an electromagnetic rod component with a groove. N layers of holes matched in position are evenly formed in the matching side of the two electromagnetic rod components in the circumferential direction, auxiliary induction rods are arranged in the holes, a temperature sensor is arranged in the radial direction of an induction heating area of the combined annular electromagnetic rod, the temperature of the combined annular electromagnetic rod can be detected in real time, and the detected temperature value is transmitted to an external temperature monitoring system. An electromagnetic induction coil is connected to a conductive slip ring through a conductive circuit and then connected to a variable-frequency power supply through the conductive slip ring to realize circuit power supply. A fixed shaft is in threaded connection with the roller, so that the combined annular electromagnetic rod can be conveniently and axially adjusted, and the axial and radial real-time regulation and control of the edge roller shape of the roller are realized. The cold-rolled sheet strip edge drop electromagnetic regulation and control roller is high in edge regulation and control capacity, high in flexibility and high in regulation and control speed.

Description

technical field [0001] The invention relates to the technical field of steel rolling equipment in the metallurgical industry, in particular to an electromagnetic control roller for improving the edge drop of cold-rolled strips. Background technique [0002] Plate and strip products account for a large share of my country's steel products and are one of the important products in the steel industry. Plate shape and thickness is a key indicator to measure the quality of strip products. The current control goal of the strip mill is mainly to control the quality of the strip by controlling the lateral distribution of the roll gap opening. However, due to the structural characteristics of the rolling mill, the reduction of the rolling mill often needs to apply a pressing force at both ends of the roll to force the overall reduction of the roll gap. A series of external loads such as roll force force the roll gap shape to change to the target roll gap shape. In such a control pr...

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned technologies have different problems: in the T-WRS technology, the generation of middle wave makes the tensile stress of the edge of the strip further increase on the basis of the tension effect. If the edge drop control is still the goal, it is necessary to The edge quality of the strip puts forward higher requirements

If there are defects such as edge cracks and inclusions at the edge of the raw material, it is easy to cause a broken belt accident during the rolling process

In addition, due to the existence of axial force, during long-term rolling, there will be an excessive gap between the frame and the bearing seat, which will have a negative impact on the bearing

Roll cooling technology has poor cooling accuracy due to the complexity of liquid flow, which is not conducive to the control of roll cooling uniformity, and it also needs to be equipped with a cooling cycle closed-loop control system, which further increases the manufacturing cost of the rolling mill

The mechanical structure of PC rolling mill technology is relatively complex, and the cost of manufacturing and transformation is also high; at the same time, since the work rolls do not move laterally, local high points caused by wear cannot be effectively avoided

In addition, my country has not yet formed a systematic PC rolling mill design and development system, and there is still an international technical blockade for this technology

EVC technology has fundamentally changed the edge drop problem, but because the edge drop roll profile design process is relatively complicated, and it is difficult to change the roll profile once processed, it is still lacking in adapting to the different edge drop control requirements of multi-standard strip steel

Images