High hardness and abrasion resistance, low adhesion capacity on metals as well as high strength, corrosion and oxidation resistance
Silicon nitride is suitable for tools used in forming technology for rod pressing, extrusion, or pulling of metallic materials and/or particle-reinforced plastics. The high hardness and abrasion resistance, the low adhesion capacity on metals as well as the high strength, corrosion and oxidation resistance are decisive for their suitability.
In order to ensure that the ceramic matrize is able to withstand the high tensile stresses that occur, it is usually shrunk into a steel holder. However, this requires a very precise design taking into account the specific conditions of use of the customer.
Typical examples are drawing rings for steel wire or deep-drawing matrices for the shaping of cooking pots.