High speed wire rod anti-false-alarm folding defect monitoring device

Abstract

The invention discloses a high speed wire rod anti-false-alarm folding defect monitoring device which is mounted between a front rolling mill and rear rolling mill on a high speed wire rod production line and which comprises a first wire rod width measuring mechanism and a first wire rod height measuring mechanism which are arranged at the outlet of the front rolling mill, and a second wire rod width measuring mechanism and a second wire rod height measuring mechanism which are arranged at the inlet of the rear rolling mill. The first wire rod width measuring mechanism is perpendicular to the axis of a roller of the front rolling mill, the first wire rod height measuring mechanism is parallel to the axis of the roller of the front rolling mill, the second wire rod width measuring mechanism is perpendicular to the axis of a roller of the rear rolling mill, and the second wire rod height measuring mechanism is parallel to the axis of the roller of the rear rolling mill. By the aid of the device, earing or hole underfilling of a rolled piece can be noticed timely, rolled piece wastes caused by folding can be reduced, false alarms caused by earing rolled piece deviation and underfilling can be overcome, specific circumstance of the rolled piece and which rolling mill is in failure can be acquired accurately, and great guiding significance is provided for rolling mill online adjustment.

Description

technical field [0001] The invention relates to the field of high-speed wire rolling, in particular to a high-speed wire anti-false alarm folding defect monitoring device. Background technique [0002] Folding is a very common defect in high-speed wire products. This defect leads to a large increase in the amount of waste products, which seriously reduces the product qualification rate and yield rate. , it will make the products with folding flow into the hands of users, which will cause great difficulties for users, and also seriously damage the reputation of enterprises and products. Judging from the quality objections of high-end products, the amount of quality objections caused by folding accounts for about 80% of the total objections. Therefore, in order to improve the pass rate and yield of products and reduce the amount of objections, we must first reduce folding defects. [0003] Folding features: Along the rolling direction, the shape is similar to cracks, and it ...

AI Technical Summary

Problems solved by technology

[0006] The first situation is that there is only a width measuring device at the exit of the front rolling mill, but no height measuring device. The rolled piece has ears or wrong rolls at the exit of the front rolling mill. There is only a height measuring device at the entrance of the rolling mill, but no width measuring device. If a rolled piece with ears in the height direction just deviates a little at this time, the measured height of the rolled piece may show that it is normal. According to reasoning I know it is partial steel, but I can't judge the size of partial steel

[0007] The second situation is that, if the pass of the rolled piece is not filled when it is monitored at the exit of the front rolling mill, then the height monitored before the entrance of the rear rolling mill is lower than the standard value. At this time, only the height measuring device will be falsely reported as partial steel

[0009] The first is that when the monitoring device is used for measurement, the rolled piece is in contact with the width measuring roll and the height measuring roll. Due to the high temperature of the rolled piece and passing through the width measuring roll and the height measuring roll quickly, the width measuring roll and the height measuring roll will be caused. The height measuring roller is worn, which reduces the measurement accuracy

[0010] The second is that steel pile accidents will inevitably occur during the rolling process. The rolled piece with piled steel running at high speed to the monitoring device will impact the width measuring roll and the height measuring roll until they are damaged or even unable to carry out Work

[0011] The third is that the width measuring roll and the height measuring roll need to be in contact with the rolled piece for measurement, so they cannot be too close to the entrance and exit of the rolling mill, so the measurement effect is sometimes distorted

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