test sieve for metal powder

Tuesday February-10 2026  15:17:12

test sieve for metal powder is a sieving instrument used for particle size detection and classification of metal powders. It is typically made of 304 or 316 stainless steel, possessing properties such as corrosion resistance, non-magnetism, wear resistance, and resistance to deformation. It is suitable for various metal powders, including iron, aluminum, titanium, and alloy powders. Metal powders are mostly micron-sized loose particles, prone to agglomeration, and exhibit significant differences in flowability. Therefore, high requirements are placed on the surface smoothness and pore size consistency of the sieve body. This test sieve adopts a modular design, consisting of a sieve frame, sieve mesh, sieve cover, and receiving tray. The sieve frame is usually a cylindrical structure and can be stacked in multiple layers as needed. The sieving particle size covers the range of 45μm to 1000μm, satisfying both coarse powder classification and precise fine powder screening.

test sieve for metal powder Principle

The test sieve for metal powder operates based on mechanical vibration sieving. Through vertical vibration, horizontal oscillation, or a combination of both, the metal powder moves systematically on the sieve surface. Particles smaller than the sieve aperture will pass through the sieve with vibration, while larger particles will remain on the sieve surface, thus separating different particle sizes. Two to eight layers of sieves can be stacked as needed to complete multiple particle size divisions at once, saving time. The sieves are mostly made of woven stainless steel wire; for higher requirements, electroformed microporous sieves are used, resulting in uniform aperture shapes. Aperture specifications refer to standards such as ISO and ASTM B214 for easy comparison of data between different batches. Sieving is mostly carried out in a dry manner. When encountering fine powders that are prone to agglomeration, an ultrasonic device can be used to reduce clogging and make the sieving process smoother.

test sieve for metal powder Function

The test sieve for metal powder is commonly used in particle size distribution assessment, loose agglomerated powders, production inspection, and powder reuse. By placing powder sequentially on sieves with different aperture sizes and vibrating them, and then weighing the powder remaining at each layer, the particle size distribution of the metal powder can be visually observed, making it easy to generate curves and providing a reference for process adjustments. During the sieving process, continuous vibration breaks up loose clumps formed during storage or transportation, making the metal powder more uniform, flowable, and stable in its accumulation. In the production inspection stage, whether it's titanium powder for 3D printing or stainless steel powder for injection molding, sieving is necessary to confirm the appropriate particle size range, preventing abnormal particle size from affecting the molding effect or finished product performance. In metal powder recycling, it can also classify the broken material after sintering, separating larger particles and impurities, and reprocessing the usable powder for subsequent production, reducing waste.

test sieve for metal powder sizes

No.	Mesh	Aperture (µm)	Aperture (mm)	Common Applications
1	20	850	0.850	Coarse powder classification
2	30	600	0.600	Coarse powder screening
3	40	425	0.425	Coarse to medium powder
4	50	300	0.300	Medium powder
5	60	250	0.250	Medium powder
6	80	180	0.180	Medium to fine powder
7	100	150	0.150	Fine powder
8	120	125	0.125	Fine powder
9	140	106	0.106	Fine powder
10	170	90	0.090	Ultra-fine powder
11	200	75	0.075	Ultra-fine powder
12	230	63	0.063	Ultra-fine powder
13	270	53	0.053	Ultra-fine powder
14	325	45	0.045	Ultra-fine powder (commonly used in powder metallurgy)

test sieve for metal powder uses

In powder metallurgy, the test sieve for metal powder is used to screen bronze and iron-based powders needed to manufacture bearings or gears, resulting in a more uniform particle distribution. In 3D printing, whether it's titanium alloy, aluminum alloy, or high-temperature alloy powder, sieving controls the particle size, affecting the density and surface smoothness of the printed parts. In the field of cemented carbide, tungsten carbide powder also needs to be sieved to ensure the finished product's performance in terms of hardness and toughness. In addition to its applications, it is also used in coatings, magnetic materials, abrasives, electronic materials such as silver paste and copper powder, and the screening of explosive particles in the military industry. In laboratory formulation development, it helps researchers process powders and classify particles; in factory pre-production sampling, it provides reference data for subsequent processes.

The test sieve for metal powder combines materials science, precision machining, and mechanics principles. Through rational structural design and meticulous manufacturing processes, it solves the screening and testing challenges posed by the small size and tendency to agglomerate of metal powders. It not only measures the particle size distribution of metal powders but also improves powder flowability, helps control product quality, and plays a role in waste recycling and powder reuse, ensuring precision in metal powder processing.