What are the methods of removing old paint from metal surfaces

Can choose laser cleaning, laser cleaning refers to the use of high-energy laser beam irradiation of the workpiece so that the surface of the dirt, rust spots or coatings undergo instantaneous evaporation or stripping, so as to achieve a clean process. Jinan high-energy Qingyang laser cleaning research shows that: because the laser and the surface to be cleaned without contact, not only high-speed removal of surface contamination, but also does not damage the performance of the clean surface, so it has the advantages of high efficiency, mobility and flexibility, easy to realize the advantages of automation and so on. From the mechanism: based on the object surface contaminants absorb laser energy, or gasification volatilization, instantaneous thermal expansion and overcome the surface of the particle adsorption, so that it is detached from the surface of the object, and thus achieve the purpose of cleaning.

Compared with the traditional cleaning process, laser cleaning technology has the following characteristics:

(1) it is a dry "dry" cleaning, does not require cleaning fluid or other chemical solutions, and the cleanliness is much higher than the chemical cleaning process;

(2) the scope of the cleaning of dirt and the applicable range of substrates Very wide;

(3) through the regulation of laser process parameters, can not damage the surface of the substrate on the basis of ah, the effective removal of pollutants, is the surface of the old as new;

(4) laser cleaning can be convenient to realize the automation of the operation;

(5) laser cleaning equipment can be used in the long term, the operating cost is low;

Laser cleaning is a kind of Laser cleaning is a "green" cleaning process, the elimination of waste is a solid powder, small size, easy to store, basically no pollution of the environment.

Traditional products in addition to paint there are two main methods: the first is the chemical paint removal methods, that is, with the help of cleaning fluid on the product paint layer to produce swelling, dissolving effect, such as the use of alkaline or organic paint remover. The other is a physical paint removal method, that is, the use of mechanical power to remove the paint layer of the product, such as scraping or high-pressure water to remove paint. Although the above two methods of technical use is very mature but there are obvious defects: chemical paint removal method is mainly the use of chemical reagents to achieve the product in addition to the purpose of the paint, so it will cause environmental pollution, is not conducive to the local cleaning, easy to damage the substrate, removal of the time required for a long period of time is very inefficient, and at the same time the chemical reagents are volatile, the human body's health is also a certain degree of impact. Physical paint removal method is mainly through the mechanical method to achieve the purpose of paint removal, so it is very easy to damage the substrate, mechanical paint removal method of noise, labor intensity, cleaning effect is not very ideal