ADVANCED CERAMICS TECHNOLOGIES
TECHNICAL CERAMICS
ENGINEERING
SWISSCERAMILL CERAMIC CUTTING TOOLS
3D CERAMIC PRINTING
ISOSTATIC PRESSING
Isostatic pressing is another commonly used shaping process for the manufacture of technical ceramics. This process is also known as cold isostatic pressing. In contrast to dry pressing, in which the raw material is pressed into a mold, isostatic pressing compresses the raw material evenly from all sides under high pressure.
In isostatic pressing, the ceramic powder is placed in a flexible mold containing a liquid that acts as a transfer medium. The mold is placed in a pressure chamber and compressed evenly from all sides under high pressure of up to 600 MPa. This pressure causes the raw material to be pushed into every corner of the mold, achieving high density.
Isostatic pressing of technical ceramics offers a number of advantages over dry pressing. Because the raw material is compressed evenly from all sides, it can be made into complex shapes with thin walls and sharp edges. In addition, components with a higher density and more homogeneous structure can be produced.
However, isostatic pressing of technical ceramics is more expensive than dry pressing due to the equipment needed and the high pressure required.
We would be happy to support you in realizing your parts with this process.
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Isostatic pressing of engineering ceramics is a process used to manufacture ceramic parts with high density and precise dimensions. It is also referred to as isostatic cold or hot pressing and uses hydraulic pressure to ensure an even distribution of pressure on a ceramic powder enclosed in a special mold.
The process of isostatic pressing of technical ceramics involves several steps:
Powder preparation: The ceramic powder is carefully selected and prepared to achieve the desired properties of the final ceramic part. This may include controlling the particle size, particle distribution, and composition of the powder.
Mold filling: The ceramic powder is placed into a special mold suitable for isostatic pressing. The mold can be made of rubber, plastic, or metal and is designed to transfer the pressure evenly to the powder.
Isostatic pressing: The filled mold is placed in a press filled with a hydraulic medium, such as water or oil. The pressure in the medium is increased to act uniformly on the powder in the mold and compress it. This allows for an even distribution of pressure on the powder from all sides, resulting in a homogeneous and dense ceramic part.
Demolding: After the desired pressure has been maintained on the powder, the mold is removed from the press and the pressed ceramic part is taken out. Depending on the specific process, it may be necessary to subject the part to further steps, such as drying or sintering, to achieve the final properties.
Isostatic pressing of technical ceramics offers a high degree of control over the density, homogeneity, and dimensional accuracy of the manufactured ceramic parts. It is frequently used in the manufacture of ceramic components for demanding applications such as aerospace, electronics, medical technology, and the automotive industry, where high strength, wear resistance, heat resistance, or other specific properties are required.
However, isostatic pressing of technical ceramics is more expensive than dry pressing due to the equipment required and the high pressure involved.
We would be happy to assist you in producing your parts using this process.
