Method for detecting paint film coating uniformity of enameled wire

Abstract

The invention discloses a method for detecting paint film coating uniformity of an enameled wire and belongs to the technical field of enameled wire paint film coating quality detection. The detectionmethod comprises the following steps: positioning and putting a plurality of intercepted grinding and polishing line samples into a forming mold; pouring the prepared pouring curing liquid into a forming mold to form a cured sample; grinding and polishing the cured sample to obtain an observation sample; carrying out microscopic observation on the cross section of the grinding and polishing sample; software measures the thicknesses of paint films at a plurality of positions in the shot micrograph and calculates the eccentricity; the invention has the following beneficial effects. According tothe detection method, the perpendicularity of the enameled wire grinding wire sample during glue pouring and the interval arrangement of a plurality of enameled wires are ensured; the real coating quality of the enameled wire paint film is accurately reflected, the reliability of the detection result is improved, the quality of the paint film is evaluated in a unified manner, the detection efficiency of the paint film coating quality is improved, and technical guidance is provided for the quality defect of paint film coating.

Description

technical field [0001] The invention relates to the technical field of enameled wire paint film coating quality detection, in particular to a method for detecting the uniformity of enameled wire paint film coating. Background technique [0002] The inspection of enameled wire paint film coating quality is generally judged by observing the cross section of enameled wire. The existing technology to obtain the enameled wire cross section is to place the enameled wire in the mold after winding, or insert multiple enameled wires into the corresponding mold, and then pour glue in the mold. After hardening, take out the formed sample and use The manual grinding and polishing machine is used for grinding and polishing, and finally it is confirmed by a microscope and the thickness of the paint layer on the section is calculated by software. [0003] However, the existing problems and defects of the prior art are as follows: 1. No matter whether the enameled wire is wound or directly...

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Problems solved by technology

[0003] However, the existing problems and defects of the prior art are as follows: 1. No matter whether the enameled wire is wound or directly put into the mould, the verticality of the enameled wire cannot be well guaranteed, and the enameled wire is likely to be skewed during the glue filling process, causing the The cross-section of the enameled wire after grinding is an oblique cross-section, which cannot accurately reflect the real coating quality of the enameled wire paint film; 2. Due to the shape of the enameled wire and the structural limitations of the mold, the number of enameled wires placed in the mold is relatively small, which reduces the test efficiency. The distance between the enameled wires cannot be guaranteed, so that the shape and shape of the enameled wire section cannot be clearly observed, which affects the reliability of the test results; 3. The evaluation methods and standards for the quality of the enameled wire paint film coating are not uniform, resulting in Cannot be evaluated uniformly, making quality inspection inefficient

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