How to do a good job in improving the quality pretreatment of aluminum profile products

Aluminum plate products are widely used in industries such as automobiles and construction. Improving the quality of Aluminum Products is fundamental to the survival of enterprises. Aluminum materials are extremely unstable in the air and can easily generate oxide films that are difficult to identify with the naked eye. Due to different processing methods for aluminum parts, such as casting, direct cutting from extruded sheet metal, mechanical precision processing, or heat treatment or welding after different processes, the surface of the workpiece will present different states and degrees of dirt or marks. Therefore, in the pre-treatment process, the pre-treatment method must be selected according to the actual situation of the workpiece surface.

In the pre-treatment process, it should be noted that not all surfaces of the cast parts have undergone mechanical processing. The surfaces that have not been machined may have a thick oxide layer formed during the casting process, and some may even have sand layers. In this case, the original oxide film in this area should be removed by machining or sandblasting first, or by alkali washing before processing. Only in this way can the original oxide layer in the unprocessed area be removed and the tolerance size of the machined area be avoided from changing.Aluminium Profiles.

Attention should be paid to the issues in the pre-treatment process of precision machined parts: Although the natural oxide film on the surface of precision machined parts is just formed and easy to remove, the grease is heavy, especially in and around the holes. Such workpieces must be cleaned with organic solvents first. If they are directly washed with alkali, not only is the grease difficult to remove, but the precision machined surface cannot withstand long-term strong alkali corrosion, which will also affect the roughness and tolerance of the workpiece surface, and may eventually become waste.