Navector inert gas sieving machines are designed to classify powders for selective laser alloying, powder metallurgy and other technologies that require the use of metal powders with a given particle size and high requirements for the chemical purity of the material. Also, these installations can be used to work with other phosphoric powders that are sensitive to atmospheric oxygen, moisture. Navector units in the NHIU version, thanks to a combination of three-dimensional sieve movement and ultrasonic sieving assistance, they can effectively classify powders with a particle size of 40 to 300 microns. The ultrasonic system has adjustable power, base frequency modulation function, various interval modes of operation for optimal sieving of specific powders. All metal parts in contact with the product are made of AISI 304 stainless steel.

Standard equipment:

1. Support frame with a receiving platform for transport bunkers Vilitek BATT of cylindrical and low profile types. Optimized for loading bunkers both by stacker and overhead crane. Specially designed to work with active pneumo-vibration drives for assisting issuance and loading, installed on BATT bunkers.

2. Screw or vibratory feeder with the ability to control the powder feed rate. The feeder is equipped with viewing windows to control the supply of powder.

3. A system of vibrationally decoupled pipelines, adapters for supplying material from the supply hopper to the sieving system, supplying classified material to receiving hoppers.

4. Sieving system with the ability to work in an inert gas environment, specially designed for sieving metal powders with bulk density up to 10 tons/m³.

5. Ultrasonic sieving assistance system.

6. Valve system to enable the system to operate in an inert gas environment and to control the flow of powders.

Specifications of sieving systems

The performance is based on tests on a powder with a bulk density of 7 kg/l, obtained by gas atomization, with a separation boundary of 60 um, with ultrasonic sieving assistance.

Sieving plants can be equipped with an innovative control system for continuous-periodic sieving, the use of such a system significantly increases the percentage of separation of the target fraction, simplifies the setting of the sieving machine when switching from one powder to another and reduces the influence of the human factor on the sieving efficiency (the optimal sieve operation mode is set one once during commissioning and does not require adjustment by service personnel).

The 3D printing industry reference customers

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