Polishing techniques for glass


Release time:

2024-01-31

After rough grinding and fine grinding, the surface of glass still belongs to a fine "rough surface", which needs to be polished to make the glass a transparent and smooth surface. The glass that has been ground with coarse abrasives can be polished with polishing materials to make it bright and shiny. Our company mainly uses mechanical polishing as the polishing method.  Common polishing materials include red powder (iron oxide), cerium oxide, chromium oxide, thorium oxide, zirconium oxide, etc. Daily glass processing also uses feldspar powder.

Polishing techniques for glass

After rough grinding and fine grinding, the surface of glass still belongs to a fine "rough surface", which needs to be polished to make the glass a transparent and smooth surface. The glass that has been ground with coarse abrasives can be polished with polishing materials to make it bright and shiny.
Our company mainly uses mechanical polishing as the polishing method. 
Common polishing materials include red powder (iron oxide), cerium oxide, chromium oxide, thorium oxide, zirconium oxide, etc. Daily glass processing also uses feldspar powder.
The main process factors that affect the glass mechanical polishing process include the properties, concentration, and feeding amount of the polishing material, the pressure and speed of the polishing disc, the temperature of the surrounding environment and glass temperature, the material of the polishing disc, the properties of the polishing suspension, and the compatibility between the chemical process and the mechanical process when using the glass polishing machine.
The materials used for polishing discs are generally felt, hard asphalt, non-woven fabric, as well as organic materials such as polyurethane and polytetrafluoroethylene. When polishing spherical and aspherical lenses in optical glass, a flexible polishing disc with a thin asphalt layer covering the outer side of nylon aluminum, zinc, and other thin sheets is used. This polishing disc always maintains a consistent state along the surface of the processed workpiece. In addition, a foam polyurethane polishing disc impregnated with cerium oxide can be used to achieve high-speed polishing. The polishing efficiency of coarse felt or semi wool felt is high, while the polishing efficiency of fine felt and nylon is low, and the surface of glass products is deep, Rough and fine grinding are commonly used before polishing.