Method and device for measuring functional characteristic parameters of three-dimensional surface topography of roll and strip steel

Abstract

The invention discloses a method and a special device for measuring topography functional characteristic parameters of a roller and a strip steel three-dimensional surface. The method is used for reading the original outline value and can carry out data processing in the following steps of;(1) eliminating a shape error; (2) eliminating a waviness error; (3) correcting a singular point; (4) calculating a two-dimensional outline height distribution probability; (5) calculating a three-dimensional outline height distribution probability; and (6) obtaining an outline load-carry duty curved line according to the integral of the three-dimensional outline height distribution probability, and calculating a topography functional characteristic parameter of the three-dimensional surface according to loaded region distributed data. The method provided by the invention can measure the topography functional characteristic parameters of the roller and the strip steel three-dimensional surface in a production field, and the accuracy of a characterization roller and a strip steel pattern is improved; the method can fully represent the surface property of the characterization roller and the strip steel, an exactly moving objective table does not need, the measured time is short, and the device can resist the large interfere influencing the measurement.

Description

technical field [0001] The invention relates to plate and strip rolling, in particular to a method and device for measuring functional characteristic parameters of three-dimensional surface topography of rolls and strip steel in strip steel production. Background technique [0002] The roll is a common processing tool in rolling pressure processing. The surface roughness Ra is mainly used to evaluate the surface of the roll and steel plate. But in fact, even for the same surface with the same Ra, there are great differences in its load-carrying performance and oil storage performance under the action of different processing methods. Therefore, the surface roughness Ra is not enough to reflect the functional characteristics of the surface, and it is necessary to detect the three-dimensional functional characteristic parameters of the roll surface topography. [0003] Wu Changchun, Zhang Jie, Cao Jianguo, etc. Research on functional characteristic parameters of roll and stee...

AI Technical Summary

Problems solved by technology

Although the SPM measurement accuracy is high, and the vertical and horizontal resolutions reach the atomic level, the measurement range, whether horizontal or vertical, is very narrow, and involves many technical difficulties, complex operations, and high requirements for the operating environment

[0018] The roll is bulky and difficult to sample. Once a sample is taken from its surface, the roll will be scrapped and can no longer be used for production. It is difficult to carry out laboratory measurement when measuring the functional parameters of the three-dimensional surface topography.

At the same time, the vibration environment of the production site cannot guarantee accurate measurement of optics, test bench movement, atomic force measurement, etc.

Therefore, these newly produced three-dimensional surface detection technologies cannot meet the requirements of online detection of rolls and strips.

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