Press release
Have you ever seen such a structure of porous metal?
porous aluminium vs. sintered metal
Porous aluminum is produced by casting with salt. This technology offers a unique structure of the porous metal. The structure of porous aluminum and the structure of well known sintered metals are complementary.
The pores in the sintered metal correspond to the metal in the porous aluminum and vice versa. Theoretically, the minimum volume porosity of the sintered metals is 26% and the maximum volume porosity of the porous aluminum is 74%. Practically, porous aluminum has 50-55% pores due to imperfect stacking of salt particles.
Shape and size of the pores:
Two types of salt granules are used for the production of porous aluminum, either spherical salt or break salt. The properties of porous aluminum depend very much on the size of the pores. We use 7 different salt fractions to obtain porous material with very different properties. This allows us to offer the optimal product for every task.
Connection between the pores:
In the production of porous aluminum, each salt particle has many contact points with other salt particles. The surface tension prevents molten aluminum to get between two salt particles. Therefore, all salt particles and then all the pores are connected to each other. All pores are open, so porous aluminum is permeable throughout the whole volume and in all directions.
Liquid and gas flow in porous aluminum and in sintered metal:
The particular structure of the pores in porous aluminum results in a different flow of liquid or gas than in the pores of the sintered metal. Such flow increases the efficiency of the use of porous aluminum in such applications as heat exchange, filtration and silencing.
EXXENTIS Ltd was founded in 2011. Based in Switzerland near Zurich EXXENTIS operates successfully in Europe as a manufacturer of porous aluminum and works with clients from various industries. Our products made of porous aluminum are produced in our own production facility to the highest quality standards. We offer you individual technical advice for every new task. In an active, ongoing dialogue we find the optimal solution for your requirements. When necessary, our experienced and competent team of engineers develops tailor-made solutions and individual parts. Our core competencies are the development and production of tailor-made, optimal product solutions for complex and unusual tasks in various industrial applications. Our technology makes it possible to produce individual prototypes for testing your ideas - quickly and at attractive prices.
Olga Mühldorfer
Techn. Sales
Exxentis Ltd
Schartenfelsstrasse 6, 5403 Wettingen, Switzerland
Tel.: +41 (0)56 430 03 00
www.exxentis.com
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