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What are the skills of optical glass polishing technology?

2021-07-27 14:09:36

Laser is mainly used for laser processing in industry. Laser processing is non-contact processing, with clean workpieces, less mechanical damage, high precision, short processing time, etc., and optical glass lenses are used in laser processing for manufacturing Lenses, prisms, mirrors, windows, etc. of optical instruments or mechanical systems. Including colorless optical glass (usually referred to as optical glass), colored optical glass, radiation resistant optical glass, radiation protection glass and optical quartz glass.

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Optical glass is an inorganic glassy material that transmits light through refraction, reflection, and transmission, or changes the intensity or spectral distribution of light through absorption. It has stable optical properties and high optical uniformity. So what are the skills of optical glass polishing technology?

1) Bath method polishing: Bath method polishing means that both the workpiece and the polishing disc are immersed in the polishing liquid. The depth of the polishing liquid should be 10-15mm when the equipment is stationary, and the agitator is to make the polishing liquid in a suspended state. , No precipitation, iron oxide (red powder), aluminum oxide and other polishing materials are generally used when polishing glass.

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(2) Ion beam polishing: Ion beam polishing is a supplementary polishing method used to further improve the polishing accuracy of glass workpieces after traditional polishing. First, under vacuum (1.33Pa), the inert gas (argon, krypton, xenon, etc.) atoms are made into ions using high-frequency or discharge methods, and then accelerated with a voltage of 20-25kV, and then collide to the position of 1.33×10 On the surface of the workpiece to be processed in the vacuum chamber of the Pa vacuum degree, the energy is directly transferred to the atoms of the workpiece material, so that it can escape from the surface and be removed.

(3) Plasma-assisted polishing: Plasma-assisted polishing is a method that uses chemical reactions to remove surface materials to achieve polishing. It uses a specific gas to make an active plasma. When the active plasma interacts with the surface of the workpiece, a chemical reaction occurs, resulting in Easily volatile mixed gas to remove the surface material of the workpiece.

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In addition to the above polishing methods, there are many new processing technologies, such as CNC grinding and polishing, stress disk polishing technology, ultra-smooth surface processing technology, ductile grinding processing, elastic emission polishing method, laser polishing, vibration polishing, etc., the degree of intelligence All are very high, with high repeatability. CNC grinding and polishing, stress disk polishing technology, etc., specifically for the processing of spherical and aspheric optical lenses.