Injection molding method:

Injection molding method:

Injection molding is the earliest molding method used for zirconia ceramics.

Using gypsum molds, low cost, and easy to shape large-sized and complex components.

The key to injection molding is the preparation of slurry.

Usually, water is used as the flux medium, followed by the addition of glue remover and binder. After thorough grinding, exhaust is discharged, and then poured into the gypsum mold.

Due to the adsorption of moisture by the capillary of the gypsum mold, the slurry solidifies inside the mold.

When hollow grouting is carried out, when the slurry adsorbed on the mold wall reaches the required thickness, the excess slurry needs to be poured out.

To reduce the shrinkage of the billet, high concentration slurry should be used as much as possible.

Organic additives need to be added to the zirconia ceramic slurry to form a double layer on the surface of the slurry particles, ensuring stable suspension and no precipitation of the slurry.

In addition, adhesives such as vinyl alcohol, methyl cellulose, Alginic acid amine, and dispersants such as polypropylene amine and arabic gum should be added to make the slurry suitable for grouting and molding operations.

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