Online real-time detection device for thickness of amorphous alloy strip

Abstract

The invention discloses an online real-time detection device for the thickness of an amorphous alloy strip. The device comprises a detector, a signal receiving device and a data analysis module, wherein the detector comprises a plurality of detection probes; each detection probe is used for independently detecting a distance between the detection probe and a corresponding point on the surface of a detected object, and feeding back distance data to the signal receiving device; the signal receiving device is used for transmitting the distance data to the data analysis module after receiving the distance data transmitted by each detection probe; the detected object comprises an amorphous alloy strip and a copper roller, which are attached to each other; the data analysis module is used for storing the received data, and analyzing the received data to obtain the single-point thickness, the average thickness, the thickness deviation of different transverse positions and the thickness deviation of different longitudinal positions of the amorphous alloy strip; and the detection probes are laser probes, infrared probes, ultrasonic probes or electromagnetic displacement probes. The online real-time detection device for the thickness of the amorphous alloy strip can be used for multi-point online real-time detection, so that the test accuracy is greatly improved.

Description

technical field [0001] The invention relates to the field of thickness detection, in particular to an online real-time detection device for the thickness of an amorphous alloy strip. Background technique [0002] Due to the irregular arrangement of atoms, there are no grains and grain boundaries in amorphous soft magnetic alloys, there are few pinning points or pinning lines of magnetic domains, and the magnetic crystal anisotropy is very small, so that amorphous soft magnetic alloys show good properties. Soft magnetic properties: small coercivity, high permeability, high magnetic induction, high resistivity, low loss, good frequency characteristics. Since the advent of amorphous soft magnetic alloys in 1967, it has attracted great attention and has become one of the hotspots in material research in recent decades. Amorphous alloy strip is the most important and most demanded product of amorphous soft magnetic alloy. [0003] The thickness and thickness uniformity of amorp...

AI Technical Summary

Problems solved by technology

However, due to the fast production speed of the amorphous alloy strip (20-40m / s), when measuring with an X-ray tester, the measurement point is far away from the copper rod, and the up and down jump of the strip will inevitably deviate from the measurement position, resulting in large measurement errors

At the same time, due to the large size of the X-ray test, it is impossible to integrate and realize the simultaneous measurement of multiple points in the transverse direction of the amorphous alloy strip.

[0006] The Institute of Chemical Materials of the Chinese Academy of Engineering Physics discloses a multi-point thickness measurement device and method in patent CN201310036141.4. This method realizes multi-point thickness measurement, but the test accuracy is low, and contact measurement makes it impossible to Applied to online thickness measurement of amorphous alloy strips for high-speed transmission

Anhui Wuhu Junhua Science and Technology Materials Co., Ltd. disclosed a device for online detection of the thickness and unilateral thickness of the amorphous strip in the patent 201120264930.X. The flow rate reflects the thickness change of the strip, but due to the poor stability of the air flow itself, the thickness fluctuation of the amorphous alloy strip is strictly required, and the change is small, which is difficult to reflect on the flow meter. In addition, the beating of the copper rod and the gas nozzle is far more than that of the strip Therefore, the detection accuracy of this method is extremely low, and it is almost not suitable for online thickness measurement of amorphous alloy strips.

Shanghai Honghao Enterprise Development Co., Ltd. discloses an anti-interference coating thickness measuring instrument in the patent CN201220549900.8. This method adopts a multi-probe integrated thickness measurement method, but the test method relies on the detection of the attenuation of infrared light penetrating the coating. The method of judging the thickness, this method cannot be used for the thickness detection of highly reflective and opaque amorphous alloy strips

Qingdao Yunlu New Energy Technology Co., Ltd. discloses a method and device for measuring the thickness of an amorphous strip using an electromagnetic micro-displacement sensor in the patent CN201210583310.1. This method can realize continuous detection and recording of the thickness of the strip, but its detection method The electromagnetic displacement sensor is used to detect the change of the distance between the probe and the surface of the guide roller. This method is greatly affected by the fluctuation of the probe and the guide roller, the flatness of the strip surface, the adsorption on the strip surface and the tightness of the strip and the guide roller. Large, low measurement accuracy

In addition, this detection is offline, and the measured strip thickness cannot regulate the strip production process.

In the patent CN201310036407.5, Qingdao Yunlu New Energy Technology Co., Ltd. also discloses a method and device for online measurement of strip shape. Two measurement points are formed on the front and back sides, and the thickness of the strip is obtained by measuring the distance between the two measurement points. This method realizes online detection, signal feedback and recording, but the up and down jump during the high-speed movement of the amorphous strip has a great influence The measurement accuracy is reduced, and the probe volume is too large to achieve multi-point measurement

[0007] To sum up, the existing amorphous alloy strip thickness measurement has the disadvantages of difficult online testing, low measurement accuracy, and difficult realization of multi-point measurement.

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