Tech Team · Kintek Solution

Laboratory test sieves are available in a variety of sizes, which are typically categorized by the diameter of the sieve frame and the size of the mesh or screen. Common frame diameters include 75 mm, 100 mm, 200 mm, 300 mm, 400 mm, and 500 mm. The mesh sizes range from 4 mesh (4.75 mm) to 500 mesh (0.025 mm), covering a broad spectrum of particle sizes. Additionally, sieves are categorized into three types based on their construction: wire woven mesh sieves (0.02 mm to 2.36 mm), metal perforated plate sieves (1 mm to 125 mm), and electroforming sieves (5 μm to 500 μm). The choice of sieve size and type depends on the specific application and the particle size range being measured.

Key Points Explained:

1. Sieve Frame Diameters:

   • Laboratory test sieves are available in standard frame diameters, which include:
     • 75 mm (3 inches)
     • 100 mm
     • 200 mm (8 inches)
     • 300 mm (12 inches)
     • 400 mm
     • 500 mm (18 inches)
     • 600 mm (24 inches)
   • These diameters are chosen based on the volume of material to be sieved and the equipment compatibility.

2. Mesh Sizes:

   • The mesh size of a sieve refers to the size of the openings in the screen, which determines the particle size that can pass through.
   • Mesh sizes range from 4 mesh (4.75 mm) to 500 mesh (0.025 mm).
   • The mesh size is selected based on the particle size range of the material being analyzed.

3. Types of Sieves:

   • Wire Woven Mesh Sieves:
     • Screen size range: 0.02 mm to 2.36 mm.
     • These sieves are made by weaving metal wires into a mesh pattern, suitable for fine to medium particle sizes.
   • Metal Perforated Plate Sieves:
     • Screen size range: 1 mm to 125 mm.
     • These sieves have holes punched into a metal plate, ideal for larger particle sizes.
   • Electroforming Sieves:
     • Screen size range: 5 μm to 500 μm.
     • These sieves are manufactured using an electroforming process, providing precise and uniform openings for very fine particles.

4. Applications:

   • The choice of sieve size and type depends on the specific application, such as:
     • Particle size analysis in laboratories.
     • Quality control in manufacturing processes.
     • Soil and aggregate testing in construction.
     • Pharmaceutical and food industry applications for fine particle separation.

5. Considerations for Selection:

   • Material Type: The nature of the material being sieved (e.g., abrasive, sticky, fine, or coarse) influences the choice of sieve type.
   • Volume of Material: Larger frame diameters are suitable for higher volumes of material, while smaller diameters are used for smaller samples.
   • Accuracy Requirements: Electroforming sieves are preferred for applications requiring high precision, while wire woven and metal perforated sieves are used for general purposes.

By understanding the available sieve sizes and types, users can select the appropriate sieve for their specific needs, ensuring accurate and efficient particle size analysis.

Summary Table:

Category	Details
Frame Diameters	75 mm, 100 mm, 200 mm, 300 mm, 400 mm, 500 mm, 600 mm
Mesh Sizes	4 mesh (4.75 mm) to 500 mesh (0.025 mm)
Types of Sieves	Wire Woven Mesh (0.02 mm–2.36 mm), Metal Perforated Plate (1 mm–125 mm), Electroforming (5 μm–500 μm)
Applications	Particle analysis, quality control, soil testing, pharmaceutical separation
Selection Considerations	Material type, volume of material, accuracy requirements

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