Laser oxide removal
When aluminum is put in contact with the humidity and oxygen of the air, a chemical reaction occurs (reduction–oxidation or redox). The aluminum oxide thus created reduces further deterioration of the aluminum by reducing the access of oxygen to the base metal. This is called passivation of aluminum.
For welding and several other surface treatments, it is important that metal be clean and without aluminum oxide. There are different ways to depassivate aluminum. Most are manual and hardly repeatable, they often require harsh chemicals that require special handling procedures and powerful exhaust fans. During some of these processes, not only you run the risk of deteriorating the surfaces but impurities can be introduced in the base metal.
Wouldn’t it be better to have a cleaning solution that requires no consumable, that is totally safe for your employees, that require no chemical and no maintenance?
Laserax has developed several product lines with advanced capabilities that will surely meet your cleaning and depassivation needs. Consult our product page to learn more about Laserax lasers.Ask an expert
Why use a laser for oxide removal?
A fast and efficient technology
Laser cleaning is an innovative solution to manual, labour intensive cleaning solutions.
Set and forget system
All Laserax laser systems requires no consumables and only minimal maintenance.
Laser technology remove oxide from aluminum, ferrous and non-ferrous metals.
Reduced environemental risks
Without chemical, laser oxide removal reduce your environmental risk exposure.
Laser oxide removal
When a laser beam is focussed on a surface, a large quantity of energy is transferred to the targeted material. If that quantity of energy if superior to the ablation threshold of the targeted material, there will be fusion, sublimation or vaporization. It is called laser ablation.
The oxide that is created when a metal is brought in contact with the oxygen and humidity in the air has an ablation threshold well below the ablation threshold of most base metals. It is thus possible to adjust the laser parameters so that its intensity is superior to the ablation threshold of the contaminants we want to remove but inferior to that of the base metal. The result: the oxide is removed without deleterious effect on the base metal.
The optical characteristics of the targeted material - mainly its reflexivity at the wavelength of the laser used, the speed at which the laser sweeps the surface of the material to be cleaned and the distance between consecutive passes will determine the quantity of material removed. It is often a good idea to remove thin layers after thin layer.
Laserax has developed a Modular Approach TM that allows the creation of automated laser systems to fulfill your specific metal cleaning and surface preparation needs.
Laserax mobile laser cleaning system can remove oxide from machines or tanks on site. No need to move them to a workshop or to a cleaning station.
Contact our laser technology experts to get more information on laser cleaning systemAsk an expert
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