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Porous aluminum instead of other porous materials
Home Computers & Technology
By: Olga Muehldorfer Email Article
Word Count: 633 Digg it | it | Google it | StumbleUpon it

The manufacturing technology of porous aluminum differs from the manufacturing technology of other porous materials. Thanks to the high flexibility and adaptability of the technology, porous aluminum can successfully compete with many porous materials in different applications. In most cases, porous aluminum replaces sintered metals, porous ceramics, porous plastics, nets and wire materials.

Porous aluminum instead of a pneumatic silencer / muffler with felt:
Prior to the launch of pneumatic silencers / mufflers made of porous aluminum, multi-piece pneumatic silencers with felt were used. For each such pneumatic silencer, the thickness of the felt was selected individually and several tests were carried out to obtain the required parameters of the pneumatic silencer. The use of porous aluminum pneumatic silencers / mufflers made it possible to eliminate a large part of this manual work. The properties of the porous aluminum pneumatic silencers / mufflers are easily reproducible by appliance of the optimal manufacturing process-dependent parameters.

Porous aluminum instead of sintered pneumatic silencer:
Flat pneumatic silencers made of sinter bronze require installation of 2 plates to achieve the required wall thickness and thus the necessary noise reduction level. Such plates made of sinter bronze are often destroyed by constant vibration and shock loads as the strength of the sintered bronze is not high enough. Steel cover plates with slots were used to extend the lifetime of the sintered bronze plates. However, this approach reduced the working surface and thus the efficiency of the pneumatic muffler. Plates of porous aluminum can easily be manufactured with required thickness. Pneumatic mufflers made of porous aluminium have smaller back pressure, larger working surface, longer lifetime, are vibration and shock resistant.

Porous aluminum instead of pneumatic sintered silencer with thread:
Standard sintered bronze pneumatic silencers have sufficient noise level reduction, but the shape and size of such silencers are significantly limited by the sintering technology. Porous aluminum mufflers / silencers can be manufactured in various designs according to your needs and for your individual task.
For the manufacturing of porous aluminium products simple conventional moulds will be used, there is no need for cost-intensive pressure-moulds as the sintering technology requires. The innovative and relatively simple manufacturing technology of porous aluminium allows us to offer you an excellent price-performance ratio even for small quantities and prototypes.

Porous aluminum instead of porous ceramics:
Ceramic filters must have quite a big wall thickness in order to have a sufficient lifetime. Even with a thick wall (which means large weight) such ceramic filters are still fragile and require careful handling. Porous aluminum filters have 5 to 10 times smaller wall thickness, 7 to15 times less weight and at the same time have higher strength, are vibration and impact resistant. With porous aluminium you may apply higher working pressure, which allows better cleaning of the filters in filtration-regeneration cycles, therefore more than doubling of the filters durability compared to ceramic filters.

Porous aluminum instead of porous plastic:
Compared to porous plastics, porous aluminum products have higher strength and higher operating temperature, they require no housing. Porous aluminum filters and pneumatic silencers have a longer durability and can be operated under higher pressure. In addition, porous aluminum is fireproof.

Porous aluminum instead of pressed wire:
Pressed wire filters will be deformed and gradually changing their shape when operated under a high pressure. After the pressure is released, the filter shape is not restored to its original shape. This affects the stability of the filter properties and shortens the durability of the filters. Porous aluminum filters have a solid and durable shape and stable lifetime properties. Due to the stiffness of porous aluminum, you can obtain shapes and sizes that are not available with pressed wire filters.

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