Detection apparatus and detection method of surface cleaning effect of cold-rolled sheet

Abstract

The invention provides a detection apparatus and a detection method of a surface cleaning effect of a cold-rolled sheet. The detection apparatus is composed of a handle, a spring, a working arm, a pin shaft, a contact pad and a position-limiting bolt. The working arm is connected to the front end of the handle through the pin shaft. The spring is arranged between the handle and the working arm. The contact pad is fixed at the front end of the working arm. The lower part of the contact pad is connected to a sponge through a screw rod, wherein the sponge is wrapped by a test pad. The middle of the handle is connected to the position-limiting bolt through threaded connection. The detection method comprises the following steps: (1) pressing the contact pad placed on the surface of the cold-rolled sheet with the handle, comprising the spring until the back part of the working arm is pressed against the position-limiting bolt, enabling the test pad to be rubbed on the surface of the to-be-tested cold-rolled sheet for 3-10 s and moving away the test pad; and (2) comparing the test pad with a reference card, and determining the alkaline cleaning degree on the surface of the cold-rolled sheet according to the color of the test pad and the residual amount on the test pad. The detection apparatus and the detection method can achieve grade evaluation of alkaline cleaning quality of the surface of the cold-rolled sheet, can increase the accuracy of evaluation and can avoid an accident of scratching.

Description

technical field [0001] The invention belongs to the field of steel rolling technology, and in particular relates to an online detection device and method for the surface cleaning effect of a cold-rolled plate. Background technique [0002] Before continuous annealing of cold-rolled steel sheets, the rolling oil needs to be washed away, and generally lye is used for cleaning. In order to detect the effect of alkali cleaning, after rubbing the wet tissue or paper with the steel plate after alkali cleaning, the color of the wet tissue or paper is often observed with the naked eye to determine whether the alkali cleaning is clean. Although this method is simple, there are the following problems: [0003] 1. Directly rubbing the surface of the steel plate running on-line with wet wipes or paper, there is a certain potential safety hazard, and the operator is easily scratched by the steel plate. [0004] 2. The strength of the operator when rubbing the steel plate determines the...

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Problems solved by technology

[0005] 3. Hold the wet tissue or paper to rub the running steel plate. The wet tissue or paper is in point contact with the steel plate, and the force distribution is uneven. When checking, the part with the darkest color is often used to judge the cleaning condition of the steel plate, which is difficult to accurately reflect The real effect of alkaline washing

[0006] Due to the above three problems, the detection method used in the prior art is obviously unscientific, and it is greatly disturbed by human factors, so it is impossible to distinguish the cleaning degree of alkali cleaning

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