After mechanical polishing of stainless steel surface, if no other treatment, the surface of the new matrix because of contact with oxygen in the air, or will generate a thin layer of oxide film layer. And after the use of electrolytic or chemical polishing, some after passivation treatment to generate a passivation film. If the passivation treatment is not carried out, there will be a thin layer of oxide film as well. So to speak, the metal and the oxygen in the air in contact with the general will form an oxide film. It's just that some are visible and some are not! Oxide skin is a corrosion product formed by the oxidation of steel at high temperatures, consisting of ferrous oxide, ferric oxide, iron tetraoxide and ferric oxide. Oxidized skin will accelerate the corrosion of the metal, so the larger the area of the oxide skin, the faster the corrosion rate of the steel substrate, the more serious the corrosion.
Produce this oxide film want to remove is a relatively troublesome problem, the traditional cleaning time-consuming and laborious, there is a certain amount of consumables, cleaning is not very convenient, and the laser rust removal cleaning machine can quickly clean the stainless steel surface of the oxidized layer, oil and so on, because it is a non-contact, non-abrasive cleaning method, so it will not cause damage to the surface of the workpiece!
The principle of laser cleaning is the use of high-frequency high-energy laser pulse irradiation of the surface of the workpiece, the coating layer can be instantly absorbed by the focused laser energy, so that the surface of the oil stains, rust spots or coatings occur instantly to be peeled off, high-speed and effective removal of surface adhesions or surface coatings of the cleaning method, and the role of the laser pulse of a very short period of time in the appropriate parameters will not harm the metal substrate.
