Coating Thickness Gauge manufacturing industry, metal processing industry, chemical industry, quality inspection industry, etc. are widely used. In the quality inspection of textile production in the textile industry, measuring fiber and yarn diameters and fabric thickness is often done. More commonly, fiber and yarn diameters and fabric thicknesses are measured using common methods such as fiber projectors or microscopy. In order to be effective, a coating Thickness Gauge is used for measurement. Therefore, Lu Libo, Liu Yulin, and Zhang Hui from the School of Textile and Materials, Xi'an Polytechnic University conducted a comparative experiment on the coating Thickness Gauge and fiber projector in measuring fiber diameter and fabric thickness, and analyzed the coating Thickness Gauge and the traditional method. Whether the measurement results are correlated, the results show that there is a good correlation between the test results of the coating Thickness Gauge and the projection microscope method and weighing method; substrates with different materials have no influence on the test results; the coating Thickness Gauge There is also a good correlation with fabric Thickness Gauge test results.
The specific experimental process is as follows:
1. Yarn diameter test
The yarn is tested by two methods: one is the conventional method, using the MVS300 fiber projector to measure the diameter of the yarn [2]; the other is using a coating Thickness Gauge. The specific method is as follows: the yarn is evenly wound on the surface of the iron substrate, that is, only one layer of yarn is spread on the surface of the substrate, and the calibration plate used for instrument calibration is placed on the surface of the yarn. In the test, we put the probe lightly on the surface of the standard plate. According to the principle of the coating Thickness Gauge, the instrument reading is the sum of the apparent diameter of the yarn and the thickness of the calibration plate. The point of the calibration plate is to average the pressure on the yarn surface. The calibration plate we use is relatively hard and light, and because it is the calibration plate used in the test, the thickness is fixed. Lightly place the probe on the surface of the test material and get a reading of 684 μm, then remove the yarn and put the calibration plate on it to get the reading of the calibration plate. Thus, if the calibration plate reads 239 μm, the approximate diameter of the yarn obtained from the test is 684 μm - 239 μm = 445 μm.
10 sets of data are obtained for each measurement, and measurements at different points are used
The average value obtained is the yarn diameter data, and the instrument can automatically obtain the variance of 10 sets of data to know the stability of the yarn data. Since the reading of the obtained yarn adopts the difference method, no matter whether the calibration is accurate or not, the difference between the two values obtained under the same instrument state is always certain.
2. Fiber diameter test
Taking wool fiber as an example, two methods are used to test its diameter: one is the conventional method, that is, the MVS300 fiber projector is used to measure the diameter of the fiber [2]; the other is to measure the fiber diameter with a coating Thickness Gauge. The specific method is as follows: flatten the fiber soaked in liquid paraffin on the substrate, and place a suitable calibration plate on the fiber to buffer the artificial pressure and reduce the error caused by the fiber gap, so as to ensure a smooth surface under the probe . Place the probe lightly on the calibration plate and read, the reading is the sum of the fiber diameter and the thickness of the calibration plate. In the fiber test, iron and aluminum substrates were used to understand the influence of the substrate material on the test data.
3. Test of fabric thickness
There are two methods to test the fabric thickness: the first one is to use YG141D digital fabric Thickness Gauge to measure the thickness of different fabrics.
For thickness, select representative fabrics with different thicknesses; the second is to use a coating Thickness Gauge to measure. The specific method is as follows: put the cloth sample on the iron substrate, and put a suitable calibration plate on the cloth sample to buffer the artificial pressure and the error caused by the unevenness of the cloth sample surface.
Gently place the probe on the calibration plate to read, the reading is the sum of the thickness of the cloth sample and the thickness of the calibration plate.
The above is the experiment done by several professionals such as Lu Libo. From the experimental results, the coating Thickness Gauge can completely replace the traditional method to improve the measurement of fiber, yarn diameter and fabric thickness with better efficiency. , but after all, it is still a textile, and the coating Thickness Gauge will have some setting parameters that are more or less inappropriate in the measurement. Therefore, the coating Thickness Gauge can measure textiles by modifying some parameters or replacing a more suitable probe. , to get more accurate data.
