Alternative advantages of laser cleaning for metal pickling
Release time：2022.03.25
Views：2090Pickling plate takes high-quality hot-rolled sheet as raw material, which enables users to effectively reduce procurement costs on the premise of ensuring surface quality and use requirements.
The advantages of pickling plate mainly are:
1. Good surface quality. As the hot-rolled pickling plate removes the oxide scale on the surface, the surface quality of steel is improved, which is convenient for welding, oiling and painting.
2. High dimensional accuracy. After leveling, the plate shape can be changed to reduce the deviation of unevenness.
3. Improve the surface finish and enhance the appearance effect.
Metal pickling process
Pickling principle:
It is a surface process that uses acid solution to remove oxide scale and rust on the surface of steel. It is usually carried out together with pre film.
Common defects:
Iron oxide scale pressing, oxygen spot, yellow spot, under pickling and over pickling.
Environmental pollution: the main pollutants produced in the pickling process are pH, SS, COD, BOD, ammonia nitrogen, petroleum, etc.
Laser cleaning process
1. Cleaning principle:
The laser energy penetrates the object surface, and the electrons in the material absorb the energy vibration for about 100 femtoseconds, resulting in plasma on the material surface; After 7-10 picoseconds, the electron energy is transferred to the lattice to make the lattice begin to vibrate. After 10 picoseconds, the object begins to produce macro temperature, and the local materials irradiated by the laser begin to heat up, melt and vaporize, so as to achieve the purpose of cleaning.
2. Cleaning process and effect:
Compared with the pickling method, the process flow of laser cleaning is very simple and does not need pretreatment. It can remove oil, oxide layer and rust at the same time. Just turn on the equipment for light, and then clean it in one step.
Laser cleaning can reach the highest industrial cleaning level of SA3; There is almost no damage to the hardness, hydrophilicity and hydrophobicity of the material surface. More thorough than pickling.
The advantages of pickling plate mainly are:
1. Good surface quality. As the hot-rolled pickling plate removes the oxide scale on the surface, the surface quality of steel is improved, which is convenient for welding, oiling and painting.
2. High dimensional accuracy. After leveling, the plate shape can be changed to reduce the deviation of unevenness.
3. Improve the surface finish and enhance the appearance effect.
Metal pickling process
Pickling principle:
It is a surface process that uses acid solution to remove oxide scale and rust on the surface of steel. It is usually carried out together with pre film.
Common defects:
Iron oxide scale pressing, oxygen spot, yellow spot, under pickling and over pickling.
Environmental pollution: the main pollutants produced in the pickling process are pH, SS, COD, BOD, ammonia nitrogen, petroleum, etc.
Laser cleaning process
1. Cleaning principle:
The laser energy penetrates the object surface, and the electrons in the material absorb the energy vibration for about 100 femtoseconds, resulting in plasma on the material surface; After 7-10 picoseconds, the electron energy is transferred to the lattice to make the lattice begin to vibrate. After 10 picoseconds, the object begins to produce macro temperature, and the local materials irradiated by the laser begin to heat up, melt and vaporize, so as to achieve the purpose of cleaning.
2. Cleaning process and effect:
Compared with the pickling method, the process flow of laser cleaning is very simple and does not need pretreatment. It can remove oil, oxide layer and rust at the same time. Just turn on the equipment for light, and then clean it in one step.
Laser cleaning can reach the highest industrial cleaning level of SA3; There is almost no damage to the hardness, hydrophilicity and hydrophobicity of the material surface. More thorough than pickling.
