Metal Powders Test Sieve

What is a metal powders test sieve?

Metal Powders Test Sieve  is an experimental device used to determine the particle size distribution of metal powder. The metal powder test sieve is generally made of stainless steel and equipped with screens of different mesh sizes (for example, multiple grades from coarse powder to ultrafine powder) to separate metal powders by particle size.

Metal Powders Test Sieve uses precise mesh size to classify powders, providing detailed particle size distribution data. The test sieve's manufacturing material, mesh accuracy, and structural design directly impact the accuracy of test results. Types of test sieves are primarily categorized by mesh material and shape, including woven mesh sieves and electroformed sieves (also known as electroformed sieves). Woven mesh sieves are made of woven metal wire, with apertures ranging from tens of microns to millimeters. Electroformed sieves are manufactured using an electrochemical process, resulting in extremely precise apertures and a smaller screening range. They are primarily used for fine powders in the micron and even submicron ranges.

Video of metal powders test sieve

What is the working principle of the metal powders test sieve?

The working principle of a metal powders test sieve is based on particle size separation using a series of standardized sieves with precisely sized mesh openings.

The screen is vibrated at high frequency by a vibration motor.

The metal powder jumps and rolls on the screen. Metal powders particles smaller than the screen aperture pass through the screen aperture, while metal powder particles larger than the screen aperture are retained on the screen.

The vibration frequency and amplitude of the metal powders test sieve can be adjusted to adapt to metal powders of different particle sizes and properties.

Technical specifications of metal powders test sieve

Project	Specification details
Screen type	Wire mesh, perforated plate screen
Screen mesh range	Commonly 20-400 mesh, can be customized to a wider range according to needs
Screen frame material	304 stainless steel, carbon steel, etc.
Screen frame size	Φ100mm, Φ200mm, Φ300mm, etc.
Number of sieve layers	1-7 layers (depending on the specific equipment and needs)
Applicable particle size range	Generally can handle metal powders from a few microns to a few millimeters

Metal Powders Test Sieve Type Parameters

Article	Standard	Sieve Diameter	Sieve Depth (H1)
Woven Wire Cloth Sieve 630 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 500 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 400 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 315 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 250 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 180 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 125 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 100 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 90 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 63 µm	DIN ISO 3310-1	200 mm	32 / 50 mm
Collecting Pan		200 mm	25 / 50 mm
Sieve Lid		200 mm	27 mm

Article	Standard	Sieve Diameter	Sieve Depth (H1)
Woven Wire Cloth Sieve 355 µm	ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 250 µm	ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 180 µm	ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 125 µm	ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 90 µm	ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 63 µm	ISO 3310-1	200 mm	32 / 50 mm
Woven Wire Cloth Sieve 40 µm*	ISO 3310-1	200 mm	32 / 50 mm

Correspondence between mesh number and mesh size

 

Mesh number (Mesh)	Mesh size (mm)	Mesh size (μm)	Application example
4	4.75	4750	Coarse particle screening
10	2.00	2000	Ore sand, coarse powder
20	0.85	850	Spray powder
30	0.60	600	Powder metallurgy coarse screening
50	0.30	300	Medium particle size powder
100	0.15	150	3 3D printing, fine powder
200	0.075	75	battery materials, ultrafine powder
325	0.045	45	fine screening
400	0.038	38	ultrafine powder
800	0.020	20	limit fineness, special purpose

Technical parameter

Number	Name	Unit	Data
1	Layers	Layer	1-8
2	Diameter	mm	200
3	Granularity	mm	0.038-3
4	Noise	dB	50
5	Feeding Capacity(once)	G	200
6	Amplitude	mm	5
7	Voltage	v	220
8	Speed	R/min	1420
9	Power	Kw	0.125
10	Overallv Dimension	mm	360*300*736
11	Weight	Kg	45

What are the advantages of the metal powders test sieve?

The metal powders test sieve offers several advantages, making it a widely used method for particle size analysis in industries like overcoming the problem of static adsorption, Overcoming the problem of metal powder oxidation, Solving the problem of poor fluidity of metal powders, Solving the problem of particle agglomeration, additive manufacturing, powder metallurgy, and more.

Overcoming the problem of static adsorption: Use anti-static materials to make the screen and screen body, reduce the adsorption of static electricity on metal powder, allow the powder to pass through the screen smoothly, and improve screening efficiency and accuracy.

Overcoming the problem of metal powder oxidation: Some metal powders are easily oxidized in the air, affecting the screening results. Screening is carried out in an inert gas environment to prevent powder oxidation.

Solving the problem of poor fluidity of metal powders: Some metal powders have poor fluidity and are difficult to pass through the screen. Improve the fluidity of the powder by vibrating the metal powder test screen or add a flow aid to the powder to improve its fluidity.

Solving the problem of particle agglomeration: Generate high-frequency vibration through a vibration motor. The vibration action causes the agglomerated metal powder particles to be subjected to impact and shear forces, thereby dispersing the agglomerates for easy screening.

What is the purpose of the metal powders test sieve?

The purpose of a metal powders test sieve is to determine and control the particle size distribution of metal powders, ensuring they meet specific quality and performance standards for industrial applications.

Ensure product performance: By accurately controlling the particle size of metal powder, the metal products produced subsequently have good physical, mechanical and chemical properties, such as strength, toughness, conductivity, etc.

Improve production efficiency: The appropriate powder particle size helps to improve the formability, fluidity and sintering properties in the production process, reduce defects and scrap rates in production, and improve production efficiency and economic benefits.

Applicable materials of metal powders test sieve

The Metal Powders Test Sieve is primarily used for precise classification and particle size analysis of metal powders of varying properties and particle sizes. Its wide range of applications covers powders of various conventional metals, alloys, and specialty metal materials. It can also be used to screen non-metallic powders related to metals, such as electromagnetic materials and metal oxides, to meet the powder particle size control and quality testing needs of various industrial sectors.

Common metal powders: iron powder, aluminum powder, lead powders, copper powders, etc.

Alloy and special metal powders: alloy powder, electrolytic copper powder, stainless steel powder, molybdenum powder, etc.

Other related materials: electromagnetic material powder, metal oxide powders such as zinc oxide, metal carbide powders such as tungsten carbide.

Mesh number recommendation for metal powders test sieve

The recommendation for mesh numbers in metal powder test sieves heavily depends on the particle size distribution (PSD) of the metal powder you are analyzing. Metal powders used in various applications, such as additive manufacturing (3D printing) and powder metallurgy, can have a wide range of particle sizes, typically from a few micrometers to several hundred micrometers.

Coarse powders screening: If the metal powder particle size is large, such as greater than 1mm, you can choose a 20-40 mesh test sieve for preliminary screening.

Medium powders screening: For medium metal powder with a particle size of 0.1-1mm, a 40-100 mesh sieve is more suitable.

Screening of fine powders: When the powder size is 0.05 - 0.1mm, the 100 - 200 mesh test sieve can screen well.

Screening of fine powders and ultrafine powders: For fine powder and ultrafine powder less than 0.05mm, it is usually necessary to use a sieve with a mesh size of 200 or even 400 for accurate screening.

What are the applications of the Metal Powders Test Sieve?

Metal powder test sieves play a key role in various fields, primarily for particle size distribution analysis and quality control of various metal powders. Through precise screening, they can separate powder samples into different particle size fractions, thereby obtaining powder particle size distribution data. This is crucial for ensuring stable and consistent product performance. In R&D and production, test sieves are used to evaluate the properties of new materials and monitor powder quality during the production process to prevent performance defects caused by uneven particle size. Furthermore, they are a common tool for quality inspection before materials are received into storage, verifying that powders provided by suppliers meet specified particle size standards. Through these applications, metal powder test sieves provide fundamental data support for material quality control, ensuring the reliability of subsequent processing and final products.

The application of metal powder test sieve applies in the accurate analysis of granularity structures of particle and power materials, and the testing analysis of solid content in liquid for laboratories, quality control rooms, and scientific research departments. Metal powder test sieve is widely used in testing analysis of chemical, building materials, powder metallurgy, and material in the processing process of sewage and wastewater from the environmental protection industry.

Working process of metal powders test sieve

The Metal Powders Test Sieve operates through a rigorous classification and separation process. Its core principle is to use mechanical or ultrasonic vibrations to drive powder particles of varying sizes through a series of sieves arranged in descending order of aperture, ultimately achieving size classification. The process begins with the preparation of a standard sieve set, continues through sample loading, vibratory sieving, classification, and finally, weighing and calculating the mass percentage of each particle size range.

Preparation stage: According to the particle size range to be measured, select a set of standard sieves (arranged in order from large aperture to small aperture) to form a sieve group. Usually the top is the large aperture sieve and the bottom is the receiving tray.

Sample loading: Place the metal powder sample to be tested on the top sieve. The sample quantity must meet the standard requirements (such as GB/T1480-2012, the sample mass is generally 50g or 100g).

Screening:

Vibration: Move the metal powder on the sieve surface through mechanical vibration (such as vibrating screen machine) and ultrasound. The vibration force causes the particles to roll or jump on the sieve.

Grading separation: Particles with a particle size larger than the sieve aperture are retained on the current sieve layer, and particles with a particle size smaller than the aperture fall through the sieve aperture into the next sieve layer, and so on, until all particles are graded.

Collection and weighing: After the screening is completed, the powder on each sieve layer and the fine powder in the bottom plate are collected and weighed separately, and the mass percentage of each particle size segment is calculated.

Precautions for metal powder test sieve

Particle size distribution of powder: If the particle size distribution range of the metal powder is wide, it is necessary to select a series of test sieves with different mesh sizes to more accurately measure the powder content of different particle sizes.

Purpose of the test: If the purpose is to determine the average particle size of the powder, you can select several representative meshes for screening. If the purpose is to understand the particle size distribution of the powder in detail, you need to select test sieves with more meshes to obtain more accurate data.

Industry standards and specifications: Different industries and application areas may have specific standards and specifications that specify the mesh selection of test sieves.

Customer Cases

Quality Control in Additive Manufacturing	Particle Size Optimization in Powder Metallurgy	Quality Control of Metal Powders for Coatings	Metal Powder Recycling

These case studies illustrate the diverse applications of metal powder test sieves in different industries, all centered around the critical need for accurate particle size analysis for quality control, process optimization and research.