In the process of using aluminum profiles for a long time, we will find that its interior will get dirty easily, and we need to clean it at this time. In the process of cleaning, we should pay attention to mastering the appropriate method, so that cleaning aluminum profiles will be faster and easier. In order for everyone to clean better, I will teach you several methods of cleaning aluminum profiles. I hope it will be helpful to you. . the
Chemical cleaning: chemical cleaning has high efficiency and stable quality. It is suitable for cleaning welding wire and small-sized workpieces produced in batches. There are two methods available: dipping and scrubbing. Use acetone, gasoline, kerosene and other organic solvents to degrease the surface, wash with 5% to 10% naoh solution at 40°C to 70°C for 3min to 7min (the time for pure aluminum is slightly longer but not more than 20min), rinse with running water, and then use Pickle with 30% HNO3 solution from room temperature to 60°C for 1-3 minutes, rinse with flowing water, and air-dry or dry at low temperature. the
Mechanical cleaning: When the workpiece size is large, the production cycle is long, and it is contaminated after multi-layer welding or chemical cleaning, mechanical cleaning is often used. First wipe the surface with organic solvents such as acetone and gasoline to remove oil, and then directly brush it with a copper wire brush or stainless steel wire brush with a diameter of 0.15mm to 0.2mm until the metallic luster is exposed. Generally, it is not suitable to use grinding wheels or ordinary sandpaper for grinding, so as to avoid sand particles remaining on the metal surface and entering the molten pool during welding to cause defects such as slag inclusion. In addition, scrapers, files, etc. can also be used to clean the surface to be welded.