Application and Features of Standard Test Sieve

Friday February-24 2023  09:44:33

The Standard Test Sieve used in the laboratory for inspection can be divided into three types from the screen material, each of which has different characteristics and application ranges: wire woven mesh (widely used, with only square holes between 2.36 mm and 0.02 mm) net), punching plate screen (mainly used in large mesh, there are two kinds of round hole and square hole from 0.2 to several hundred millimeters), electroforming screen (mainly used in high-precision occasions, can do Each mesh is within mean error). As a professional manufacturer of Standard Test Sieve, it is necessary to have a tool microscope and a projector. The tool microscope is used to check the accuracy of the mesh, and the arithmetic mean method is used (now the new method is the normal distribution value).

Features of Standard Test Sieve Sieve

Standard Test Sieve wire woven mesh has low cost and good flexibility, but relatively low precision (large mesh holes are allowed), and the mesh may be deformed, (the mesh precision can be controlled by expanding and shrinking holes, and electrochemical methods can be used) Hole fixing) Generally, manufacturers with high-precision screen production capacity are required to ensure mass production (screens that meet the GB/T6003.1-1997 standard need to be selected from a large number of high-precision screens). Most of the application industries are the diamond industry, especially the export manufacturers, which require a standard negative difference, because foreign countries are half a size away from China, and at the same time, the basic grains account for more than 90%, such as 230, preferably between 75 microns and 63 microns. the

The perforated plate screen type inspection sieve has uniform mesh precision and is not easily deformed. It is mainly used for the detection of large particles. Because it has two types of round holes and square holes, it is used for asphalt collection sieve with round holes and coal sample sieve with round holes.

Electroforming screens are manufactured by electrochemical methods, with high precision. Theoretically, the precision can reach one micron. However, due to the different process molds of manufacturers, there will be great differences. At the same time, the flexibility is not good, easy to crack, and the cost is too high, so it is not applicable. for production. There are sieves for inspection in various industries in the country, such as pharmacopoeia sieves, sand and gravel sieves, cement sieves, etc., all of which are meshed according to industry requirements and mesh tolerances comply with GB/T6003.1-1997, GB/T6003.2- 1997, GB/T6003.3-1997.

Standard Test Sieve sieves have a variety of user needs, but the mesh accuracy, screen frame matching accuracy, and material are the basic requirements.

Standard Test Sieve is widely used in scientific research and production, laboratories, quality inspection rooms, and laboratories of colleges and universities in metallurgy, powder, chemical, pharmaceutical, building materials, geology, national defense and other departments.