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Metal mesh mesh

2018-04-14

The number of mesh holes in the length of 1 inches (25.41mm) is Mesh, the unit is an eye / inch, for example, the number of mesh holes in the length of 1 inches (25.41mm) is 100, that is, a net of 1 square inches of 100 holes in the direction of longitude and latitude, with 10000 mesh holes, and the number of eyes is 100.


Because the mesh is the opening of the wire on the net, the number of Internet holes per inch should be equal to the number of wires, so it can also be explained that there are 100 wires in the warp (or weft) of 1 inches (25.41mm), that is, a net of 1 square inches consisting of 100 wires in the direction of longitude and latitude, and there are 10000 mesh holes. 100 orders.


Because of historical reasons, the American Taylor standard sieves are used in our country, and the international standard sieves are generally used in this standard, while the sieves of France and the former Soviet union are made in centimeters as units of length, which are very different. The sieves in the United Kingdom and the United States are different and roughly the same. Japan's sieving system is in its own system. It is easy to understand, because the steel wire diameter of each country is different and the unit system is different (for example, the United States is ignoring the international unit system so far, the British units used by the people are still the big line.) It is easy to produce different sieving system. Many manuals have sieve tables. It is not difficult to find.


According to the Taylor screening system, the visual number Mesh and the aperture a and the silk diameter d have the following relation formula: Mesh = 25.41/ (a+d) - ---- 25.41 here is millimeter, the natural aperture and the wire diameter are all millimeter to ~ ~ ~

So what is the Taylor screening system in the end?

It is said that Taylor in the screen mesh is how the provisions? The division of Taylor standard screen is based on the 200 screen hole size 0.074mm (0.053mm), multiplied by or divided by the n square (n = 1, 2, 3...) of the main modulus (the main modulus = 2^0.5 = 1.414, that is, the root number 2). If the size of the sieve hole is coarsely or finer than the 200 mesh, the size of a series of sieve holes can be obtained if the sub modulus (sub modulus = 2^0.25=1.1892, the four square root of 2) is multiplied by or divided by the 0.074mm, and the size of the sieve hole in the list is classified by the sub modulus.



In addition, the standard sieves made in some countries are in addition to the above two modulus, and the modulus is 2, 10^0.1 = 1.2589 (10 times 10 times square root).

The following two standards can be querying in China's current screen standard.



GB/T 5330-2003 industrial wire woven square hole screen.

GB 10611-89 network hole size series for industrial use

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