Technical ceramics
Solutions for a wide variety of technical ceramics and many different applications like grinding media
Solutions for shaped and unshaped refractories for very high temperature with corrosion and erosion resistance
Standard ceramics
Solutions for different layers of standard ceramic bodies especially engobes and glazes
Technical ceramics
Solutions for high-temperature technical ceramics characterized by a high chemical resistance
Solutions for polishing with controllable abrasive power
Flame retardant
Solutions for flame retardancy of many industrial products like wires and cable coating.

Investment Casting

Investment casting, also known as lost-wax casting, is one of the processes of manufacturing metal parts that go back more than a thousand years. In this method, the mold is formed using a wax model corresponding to the desired piece. Then the mold is immersed in a ceramic slurry to form a shell around the mold. After the shell drying, the mold and shell are placed in the oven and the wax melts and comes out of the shell. Finally, the molten metal is poured into the ceramic shell and the part is manufactured.

Most parts that are usually made by investment casting include objects that have complex geometry. High working temperatures are also common in this process, which is suitable for Cast metals with high melting temperatures that cannot be molded into plaster or metal. This method is used for automotive, aircraft and military industries.

The material which is used for the shell needs to be shock resistant, resistant to melt corrosion, chemically and stable at high temperatures and provide good surface quality in the cast part. For this application ALPHA offers different grades of calcined alumina with precise particle size distributions, soda content and specific surface area.

The meticulous manufacturing process leads to complete control of products' properties and a suitable product for every technical ceramic.


Suggested Products:

Calcined Alumina (α-Alumina)