Polishing method of lithium disilicate glass ceramics

The polishing methods of lithium disilicate glass ceramics mainly include mechanical polishing and chemical polishing. The following is a detailed explanation of the two polishing methods:

Mechanical polishing

Mechanical polishing refers to the use of mechanical equipment for polishing processing, such as manual polishing machine, automatic polishing machine, etc. Mechanical polishing method can achieve a high polishing effect, and strong control, is one of the most widely used polishing methods.

Steps:

Preliminary grinding: Use sandpaper or grinding wheel and other tools to conduct preliminary grinding on the surface of lithium disilicate glass ceramics to remove the surface unevenness and burrs.

Step polishing: Using a polishing paste or polishing cloth of different sizes, the surface is polished step by step until the desired finish is achieved.

Note:

Select the right polishing material: Select the right polishing material according to the hardness and surface state of lithium disilicate glass ceramics.

Control polishing speed and strength: Too fast or too strong may cause surface damage or scratches.

Pay attention to the polishing direction: try to polish along the grain and outline of the ceramic product to avoid scratches and damage.

Chemical polishing

Chemical polishing refers to the use of chemicals for polishing processing, this method is often used in the surface treatment and reinforcement of ceramic products.

Steps:

Surface pretreatment: The surface of lithium disilicate glass ceramics is cleaned and degreased to ensure the uniform adhesion of the chemical polishing liquid.

Chemical polishing treatment: the pre-treated ceramic products are soaked in chemical polishing liquid, and the surface unevenness and burrs are removed by chemical reaction.

Cleaning and drying: The polished ceramic products are cleaned and dried to remove the residual polishing liquid and water.

Note:

Select the right chemical polishing fluid: Select the right chemical polishing fluid according to the material and surface state of lithium disilicate glass ceramics.

Control polishing time and temperature: too long polishing time or too high temperature may lead to excessive corrosion or deformation of the surface.

Pay attention to safety protection: chemical polishing liquid usually has a certain corrosive and toxic, so during the operation should wear good protective equipment, such as gloves, masks and goggles.

In addition to mechanical polishing and chemical polishing, there is a special polishing method - flame polishing, which is suitable for some specific application scenarios. The use of flame polishing to soften the glass surface and the impact of fire on the glass can solve some material grain problems on the surface of glass products, but the flatness of the glass surface after treatment will be reduced. This method requires specialized equipment and technical support, so it is relatively rare in practical applications.

In general, the polishing method of lithium disilicate glass ceramics needs to choose the appropriate method according to the specific application scenario and needs. In the polishing process, attention should be paid to controlling various parameters and conditions to ensure that the ideal polishing effect is achieved.