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The maximum particle size of the filler is 25μm. What range of fineness plate is better?

Abstract: 本文介绍了如何选择适当范围的细度板来测量填料颗粒的最大尺寸。对于最大颗粒尺寸为25μm的填料,建议使用0-50μm的细度板,而不是0-25μm的。细度板的刮样凹槽逐渐变细,选择稍大范围的细度板可以确保颗粒在中间位置,便于观察和刮样。使用细度板时,应注意刮刀与板的角度,以及读数时眼睛与板之间的角度,以确保测量的准确性。

The fineness plate is a simple instrument for detecting the fineness of pigment particles. The general measuring range of the fineness plate scraping sample is 0-25, 0-50, 0-100 and 0-150. If the filler particle is 25 microns, 0- 25 range?

The answer is definitely no. The groove of the scraping sample of the fineness plate is getting finer and thinner from top to bottom. The better state is that the particles are just in the middle, so that it is more convenient to observe or scrape the sample, and it is also clear to the naked eye.

The maximum particle size of the filler is 25 μm, what range of fineness plates should be used?  Picture 1

The maximum particle size of the filler is 25 μm, what range of fineness plates should be used?  Picture 2


Therefore, if the estimated fineness of the filler is 25 microns, it is a good choice to use a scraper Fineness Meter of 0-50 microns. Understood?

In addition, there are two points in the process of using the fineness plate: 1. Pay attention to the proper angle between the scraper and the scraper during the fineness scraping process, and then scrape it off. As shown below.

The maximum particle size of the filler is 25 μm, what range of fineness plates should be used?  Picture 3

2. When reading the fineness, note that the angle between the eye and the board is about 30°. As shown below

The maximum particle size of the filler is 25 μm, what range of fineness plates should be used?  Picture 4

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