the functions of optical finishing include:
- Jul 05, 2018 -
The functions of optical finishing include:
1. Improve the shape and flatness of the plate.
2. Reduce or eliminate the yield platform of the steel plate, so as to temporarily reduce or eliminate the phenomenon of slippage line when the coated steel plate is used for forming and processing.The yield platform is temporarily eliminated by large amount of photofinishing, which can be maintained for several days.
3. Keep the plating crystal flat to reduce the fluctuation of the plating surface.Here say "crystal flower," rather than "zinc flower", because, the crystallization of the galvanized layer of pattern is called zinc flower, if the other kinds of hot dip plating crystalline pattern, also known as zinc flower is not appropriate,,, but all kinds of hot dip plating crystalline pattern can collectively crystal flower.
4. Given the surface roughness.This requires that the surface of the smooth work roll be brushed in advance by means of sand blasting, electric spark beating or laser tapping.The working roller with different surface roughness will give different surface roughness to the plating plate.However, the surface roughness of coating and plate is not equal to the surface roughness of working roller, because the elastic deformation of plate surface disappears after leveling processing, and only the plastic deformation remains.The "photocopying coefficient" is generally 0.5~ 0.6, that is, the roughness formed on the surface of the plate is the finishing work roll, and the roughness of the surface of the roll is 50-60%.