glass bead test sieve

What is a glass bead test sieve?

Glass bead test sieve, also known as test sieve or analysis sieve, is a device specially used to accurately measure the particle size distribution of glass beads. Considering the roundness, brittleness, fluidity and high requirements for particle size uniformity of glass beads, the test screen is usually composed of a series of standard precision screens, the apertures of which are arranged from coarse to fine, generally 2 to 8 layers, and used in conjunction with an electric vibrating screen.

The glass beads are separated step by step in each layer of the screen through vibration, and the particle size distribution is finally analyzed based on the mass of the material on and under the screen. The screen aperture range usually covers from 100 microns to 2 mm, which can meet the detection needs of different particle size specifications such as reflective beads for road markings and glass beads for shot peening. This equipment is suitable for particle size detection and quality control of small and medium batch samples in scientific research laboratories, quality inspection departments and production enterprises, and is an important tool to ensure the consistency and application performance of glass bead products.

Difference between glass bead test sieve and glass bead test sieve

Glass bead detection sieve focuses on particle size detection, emphasizes high precision and standardization, suitable for small sample analysis, glass bead screening machine tends to be high-efficiency, large-scale screening operation, suitable for grading processing in the production process

Working principle of glass bead test sieve

The working principle of glass bead test sieve is based on physical screening and particle size classification technology. Its core is to achieve accurate stratification of glass beads according to particle size through vibration or shaking of multiple layers of standard aperture sieves.

It consists of a group of vertically stacked sieves, and the sieve apertures are arranged in order from large to small (such as 2.00mm, 1.18mm, 0.85mm to 0.18mm).

Pour the glass bead sample to be tested into the top sieve, and through mechanical vibration or manual shaking of the equipment, the spherical structure of the glass beads and the action of gravity make the particles roll and jump on the sieve surface. Glass beads with larger particle sizes are intercepted by the upper sieve, and smaller particles fall into the lower layer through the sieve holes, and finally stratification by particle size is achieved.

Structure of glass bead test sieve

Glass bead test sieve is a special test equipment for measuring the particle size distribution of glass beads. It consists of a set of standard sieves with different apertures (stacked from large to small according to particle size), usually including sieve frame, sieve, bottom plate and cover. Through mechanical vibration or manual shaking, the glass beads are layered according to particle size to analyze their particle size distribution.

Screen: woven from metal wire (such as stainless steel), the aperture size strictly follows the standard, and common specifications are 45μm, 75μm, 106μm, 150μm, 212μm, etc.

Screen frame: generally a circular metal frame (such as aluminum alloy or stainless steel), fixed sieve and easy to operate, the diameter is commonly 200mm or 300mm.

Matching components: including base, top cover, vibrating screen machine (used to assist screening and improve efficiency), etc.

Glass bead test sieve mesh number and aperture comparison table

Specifications of glass bead test sieve and inspection sieve frame

Glass bead test sieve has two types of mesh: wire woven mesh with mesh size GB6003.1-1997 and punched plate mesh with mesh size GB6003.2-1997.

Basic mesh size w\Basic mesh size w\Basic mesh size w\Wire diameter d\Screening area percentage A0%\Basic mesh size\Basic mesh size\Basic mesh size\Wire diameter d\Screening area percentage A0%

Application scope of glass bead test sieve

Glass bead test sieve has a wide range of applications, closely surrounding various application scenarios of glass beads. In the field of transportation, it is used to detect glass beads for road markings to ensure that their particle size meets the standards, ensure good reflective performance, and improve night driving safety; in industrial grinding, it detects the particle size of abrasive glass beads to ensure grinding efficiency and accuracy. When producing optical instruments, the particle size of optical glass beads is tested to ensure the stability of their optical properties such as refraction and focusing. In the cosmetics industry, glass beads used to make fillers are tested to ensure that their particle size is uniform to avoid irritation to the skin. In addition, the fields of architectural coatings and 3D printing materials also rely on glass bead detection screens to control the particle size of glass beads, ensure the quality of finished products, and meet the stringent requirements of different industries for the particle size of glass beads.