The application of aluminum plate is very extensive, so it is necessary to improve the quality of aluminum plate. So how to identify the quality of aluminum plate? How to ensure the quality of aluminum plate in the production process? How can I purchase the aluminum plate suitable for the production environment?

 

The problem of improving the quality of aluminum plate

 

Aluminium sheet products are widely used in automotive, construction and other industries. Improving the quality of aluminum products is fundamental to the survival of enterprises. Aluminum materials are extremely unstable in the air and easily generate oxide films that are difficult to identify with the naked eye. Due to the different processing methods of aluminum parts, such as casting molding, or direct cutting from rolled sheet, or mechanical fine processing molding, or heat treatment or welding after forming by different processes, the workpiece surface will appear Different states and different degrees of dirt or traces, for this reason, in the pretreatment process, the pretreatment process must be selected according to the actual situation of the workpiece surface.

 

It is necessary to pay attention to the pretreatment process. Not all surfaces of the cast parts are machined. The unmachined surface has an over-thick oxide layer formed during the casting process, and some also have a sand layer. At this time, the machine should be used first. The original oxide film on this part is removed by processing or sandblasting method, or it is processed after alkali washing. Only in this way can the original oxide layer of the unprocessed part be cleaned and the tolerance size of the machined part can be avoided.

 

Matters needing attention in the pre-treatment process of finely machined parts: Although the natural oxide film on the surface of the finely machined parts is only initially formed and easy to remove, it is greasy, especially in and around the holes. Such workpieces must first be treated with organic solvents. If you wash directly with alkali, not only will it be greasy and difficult to remove, but the finely processed surface will not withstand strong alkaline corrosion for a long time. As a result, it will also affect the roughness of the workpiece surface and the tolerance of the tolerance, which may eventually become a waste product.