The Most popular sanding paper in cases when you are working with wood material. Because wood has a rough surface to remove the master almost always use exactly such a thing as sandpaper. What is it? Sandpaper or coated abrasives is the abrasive material, the main purpose of which is to impart a perfect smoothness almost any surface.
Kinds of grinding paper quite a lot. However, the most widely only some of them. The most used was the emery glass-dust on paper or fabric basis.
If we talk about paper this item, it is often characterized by a relatively high density of the material. This is a very important parameter as it will determine what mechanical damage could withstand the paper. In order to increase the lifetime and range of use, sometimes the sanding paper can be done on a water-resistant base.
The advantages of this type of material.
However, there are also disadvantages, which include poor resistance to wear and low strength inherent in the paper.
For the production of abrasive paper with such a base is most commonly used cotton, which is pre-treated with a special resin. It is because of this method of production of tissue grinder is characterized by high resistance to water, improved flexibility, and is characterized by relatively high strength.
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The disadvantages of such coated abrasives is the fact that cotton tends to stretch in use. The second disadvantage is the higher cost compared to other bases, since cotton is more expensive, in addition, for the production of necessary and special resin.
I Should add that in specialized stores currently sell a combination of the sandpaper. This emery lie at the heart of glued together paper and fabric materials.
Sandpaper differ not only base, but also the type of grinding grain, which was used during creation.
Today for the production of such paper or nozzles on the drill uses a different abrasive grain. On this basis it is possible to distinguish 4 different types of material:
Designation of coated abrasives is regulated by GOST. In this document as the primary parameter specifies the grain size, which is denoted by the letter P, and the limits for this parameter are numbers from 12 to 2500. It is important to understand that the larger the specified number, the smaller the grain size on the paper. It is also worth noting that in some former Soviet republics used the GOST of the USSR. In this casethe marking will indicate the number of 20-N. In this case it is important to know that listed tens of microns grinding. If you want to specify just the number of microns, the marking will look like this: M20. A rough classification of types of coated looks like this:
Dimensions coated is determined depending on its granularity. Sandpaper with a measure of grit 50, has a width in 720, 750, 800, 850, 900, 1000. This indicator is measured in millimeters. Paper with such parameters width and grit is produced in rolls with a length of 30 meters. It should be noted that with R50 and a width of 1250 mm, coil length is reduced to 20 meters. For sanding paper GOST 6456-82 defines all sample sizes, the rules of production and acceptance.
The production Technology of this product lies in the method of applying abrasive onto the substrate. For this operation there are several methods. It may be a mechanical method of application or the option with application of an electric field. Every manufacturer of grinding paper chooses what method to apply the abrasive. It is also worth noting that an important factor in the production will be and the choice of confounders. They may be different brand or type. Also the cords will depend on the strength and mode of operation of the sandpaper.
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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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