A method and device for quickly measuring the outer diameter of a high-speed rotating wheel crystallizer

Abstract

The invention relates to a method and a device capable of quickly measuring an outer diameter of a high-speed-rotating-wheel type crystallizer. The device capable of quickly measuring the outer diameter of the high-speed-rotating-wheel type crystallizer comprises a touch screen, a programmable logic controller (PLC), a measurement device, and a drive device, wherein the measurement device is arranged on a drive mechanism of the drive device and connected with the PLC, the PLC is connected with the touch screen, and the drive device is connected with the PLC. An initial outer diameter and compression amount of the measurement device are set through the touch screen, and the PLC receives preset signal operations from the touch screen and controls the drive device to drive the measurement device to collect auxiliary measurement signals of the outer diameter the wheel type crystallizer and accurate outer diameter measurement of the wheel type crystallizer is obtained after analysis and calculation. Strip-spouting process parameters can be regulated according to the measurement, so that the stability of the strip-spouting process parameters is guaranteed, the quality of amorphous strips can be greatly improved, the product stability is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a method for rapidly measuring the outer diameter of a high-speed rotating wheel, in particular to a method for rapidly measuring the outer diameter of a high-speed rotating wheel crystallizer in the production process of an amorphous strip. Background technique [0002] The existing preparation method of amorphous thin strips is that the amorphous alloy is smelted by an intermediate frequency induction furnace, poured into the tundish, bottom injected into the spray belt bag, and the molten steel is sprayed from the nozzle onto the high-speed rotating wheel mold. not less than 10 6 ℃ / s, instantly solidified into a thin strip with a thickness of 25-30μm. During the preparation process of the amorphous strip, the molten steel continuously erodes the surface of the crystallizer, resulting in the surface of the crystallizer being gradually roughened. However, in order to produce amorphous strips with uniform thickness and high de...

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Problems solved by technology

Existing methods for measuring the outer diameter of the crystallizer: one is to use a depth gauge to measure the thickness of the copper sheath in a static state of the crystallizer, and then calculate the outer diameter of the crystallizer, or use a tape measure to directly measure the circumference to calculate the outer diameter of the crystallizer, However, this type of measurement method has low equipment accuracy and cannot be measured online. At the same time, it has relatively high requirements for the operator's operation techniques and large measurement errors; another type of measurement method is to use a linear micrometer to measure instantaneously when the crystallizer is rotating. , this method is easy to wear the measuring head of the micrometer, or the measuring head will leave scratches on the surface of the crystallizer; there is also a method of using laser ranging. It is relatively mature, but due to the large amount of metal scraps in the production environment of amorphous strips and the large changes in the surface finish of the crystallizer, it is almost impossible to use laser to measure the accurate crystallizer outer diameter. Even if laser distance measurement is used, a large number of calibrations must be passed. , It can only be used after the calibration process, the measurement cycle is long, it is difficult to apply in the actual measurement work

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