Alumina wear-resistant ceramic forming method

(1) dry pressing molding

Alumina wear resistant ceramic dry pressing molding technology is limited to simple shape, wall thickness more than 1 mm, the ratio of length to diameter is not more than four items.A single axial or two-way molding process.Pressure on the mechanical press size change because of how much powder filling, easily lead to size after sintering shrinkage difference, affect the quality of the product, therefore, in the process of dry pressing fission particle uniform distribution is very important for the mold filling.

(2) slip casting

Injection molding is the earliest use of alumina wear resistant ceramic molding method.Injection molding is the key to the preparation of alumina slurry.Usually with water as solvent media, coupled with glue and adhesive solution, sufficient exhaust after grinding, then pour it into the plaster mould.Alumina wear resistant ceramic slurry will need to add organic additives to make slurry particle surface formation of electric double layer make slurry stable suspension without precipitation.

Aluminum oxide wear resistant ceramic  forming methods still have a lot of kinds, such as extrusion and cold isostatic pressing molding method.At home and abroad in recent years, and developed the filter shaping, direct injection molding of solidification and gel injection molding, centrifugal injection molding molding technology with solid free molding method.