Using high-frequency ultrasonic cleaning technology to remove stains on optical fiber glass fibers - Fanying Laboratory Ultrasonic Experience Sharing

Optical fiber is the abbreviation of optical fiber, which is composed of thin glass fibers with a diameter of about 0.1mm. It is transparent and thinner than hair. It is so fragile, precise and small in size that it is difficult to remove dirt using traditional cleaning methods. However, by choosing the right frequency, ultrasound can easily clean these objects without damaging these small parts.

First of all, ultrasonic cleaning of optical fiber glass fibers belongs to precision cleaning

Precision cleaning has two meanings:

1) It means that the product being cleaned is relatively precise, with high performance, high reliability and miniaturization.

2) It means that the residual pollutants of the cleaned product are relatively few and relatively small, with a relatively high cleanliness. Precision industrial cleaning has stronger cleaning means and cleaning ability than conventional industrial cleaning, higher cleaning efficiency, and uses more advanced cleaning processes, cleaning technology equipment and detection methods. After precision industrial cleaning, no water marks, fingerprints, hair, dandruff, etc. can be seen on the surface of the object. The diameter of the residual dirt particles is less than 1um, which can usually be observed with an optical microscope. The diameter of the particles that can be observed with an optical microscope is 0.1um~10um

Ultrasonic frequency suitable for precision cleaning: (high frequency 68KHz~120KHz)

From a professional perspective, small particles of dust attached to the optical fiber glass fibers belong to particle pollution.

Particles have a certain shape and volume, and the particle size distribution range is very wide. Each solid substance may become dust, flying with the wind and adhering to the surface of the workpiece. Commonly seen are metal shavings, plastic powder, glass powder, dust, fiber, hair, skin shavings, grinding powder, polishing powder, etc. These pollutants come from the processing procedures and the surrounding environment.

Some particles are deposited on the surface of the workpiece by free fall, and the adhesion is not very strong. Some are deposited on the surface of the workpiece due to liquid evaporation, and the adhesion is very strong. Some are crushed on the surface of the workpiece by a large mechanical force during grinding or polishing, and the adhesion is very strong.

The small particles on the fiber optic glass are dust floating in the air. Due to friction, the surface of the particles often carries static electricity, which has strong static adhesion and is difficult to remove. The force generated by the collapse of high-density cavitation bubbles in Vanke's supersonic high-frequency ultrasonic cleaning is equivalent to countless small brushes carefully scrubbing the surface of the fiber optic glass, causing the microparticles to fall off without damaging the strength of the fiber.