What is standard test sieve

Friday February-24 2023  09:45:40

Introduction of Standard Test Sieve

Standard test sie​ve is mainly used for particle size classification and detection of powders, granules or suspensions. It has strict mesh size standards and can quickly and effectively measure the size of solid particles from 150mm to 5μm. Standard test sieves have diameters of 75mm, 100mm, 200mm, 300mm, and 400mm, among which 200mm and 300mm standard test sieves are more common, and stainless steel, nylon, and all-copper sieve frames can be selected according to requirements.

Standard Test Sieve Specifications

Product: Standard Test Sieve

Aperture sizes: 0.02-2.36mm

Frame diameter: 75mm, 100mm, 200mm, 300mm, 400mm, 500mm (other requirements can be customized)

Surface type:Woven Wire Mesh/Perforated Plate/Electroforming Mesh

Hole shape: Square/Round

Material:Stainless steel304/Brass/Chromeplate

International standard: ISO3310-1:1990 R20/3, R20, R40/3 series

Screen frame layers: 1-8 layers

Weight: 45kg

Types of Standard Test Sieve

Standard Test Sieve's sieves can be divided into three types, each with different characteristics and applications:

Wire woven mesh (widely used mesh from 2.36mm to 0.02mm, only square mesh);

Punching plate screen (mainly used in large mesh, there are two types of meshes, round holes and square holes, from 0.2 to several hundred millimeters);

Electroforming screen (mainly used in high-precision occasions, each mesh can be within the average error range). As a professional manufacturer of standard sieves, you must have a tool microscope and a projector. The tool microscope is used to check the accuracy of the mesh, using the arithmetic mean method (now the new method is the normal distribution method).

Features of Standard Test Sieve

1. The screen frame is made of SUS304 stainless steel by stretching and polishing, the wall thickness is 0.6mm, the gloss is uniform, durable, and there is no magnetism;

2. The screening accuracy is accurate and the efficiency is high, which can be screened to 0.025-3mm;

3. Equipped with time relay control, which can realize timing from 0 to 99 minutes, and the data is more reliable;

4. The ingenious base shock absorption design can effectively shield the vibration of the equipment on the workbench during operation and reduce the working noise;

5. The screen mesh and the screen frame are fixed by tin welding to eliminate the problem of relaxation and shaking, and can work stably at a temperature of >300 degrees.

Application of Standard Test Sieve

1. The standard test Sieve used for asphalt pavement and various base aggregates is based on square-hole sieves, and the corresponding sieve sizes are 75mm, 63mm, 53mm, 37.5mm, 31.5mm, 26.5mm, 19mm, 16mm, 13.2mm. , 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm;

2. When the diameter of the standard test Sieve of aggregates for cement concrete is greater than or equal to 2.5mm, the round-hole sieve shall be used as the standard and the square-hole sieve shall prevail when it is less than 2.5mm. The sieve size of the corresponding standard sieve is 100mm, 80mm, 63mm, 50mm, 40mm, 31.5mm, 25mm, 20mm, 16mm, 10mm, 5mm, 2.5mm, 1.25mm, 0.63mm, 0.315mm, 0.16mm, 0.075mm.

3. One chassis and one cover of the sieve

4. Its specifications and quality requirements: should comply with the provisions of GB/T6003.2 "metal perforated plate standard test Sieve"

5. Diameter of screen frame: both are 300mm