Many friends who are engaged in the aluminum alloy casting industry know that there are many points to pay attention to in the production process of aluminum castings with the quality of opinions. The aluminum casting manufacturers will introduce some skills for us to avoid misunderstanding and produce aluminum castings.

In order to check the quality of the casting, check the quality of the casting in advance in order to check the quality of the casting which is not easy to form, and to check the quality of the casting which is not easy to form.

In the pressing process of aluminum casting, if the gas production is large, it will directly harm the porosity of aluminum casting. Therefore, in order to avoid the similar phenomenon, dry and clean alloy material should be selected; at the same time, the smelting temperature should be adjusted to avoid over temperature, and degassing should be done well. Of course, the casting process specification should be selected correctly, and the filling sequence should be selected, which is more conducive to the cavity gas drainage; the size of the sprue and runner should be sufficient to facilitate the stable movement of the alloy liquid and the gas can be discharged.

In addition, it is necessary to select coating with good performance for aluminum casting and adjust the amount of brush coating. For aluminum castings, each defect is caused by several different factors. Therefore, it is necessary to solve the problem according to the difficulty coefficient level.

For example, clean the aluminum alloy casting mold's parting surface, cavity and cylinder, then improve the coating and coating process, increase the clamping force and increase the casting aluminum alloy quantity; then adjust the technical parameters, including the injection force, the injection rate, the filling time, the casting time, the casting temperature, the mold temperature, etc., and determine the ratio of the aluminum alloy ingot, the new material and the recycled material, and the melting rate. Refining process.

On this basis, many problems of aluminum castings can be prevented, and the molding quality of aluminum castings can meet the corresponding standards and meet the requirements of specific application.

After the injection molding of aluminum castings without any other treatment, its properties are lacking, especially in the properties of aluminum castings. In order to improve the characteristics of the surface layer of aluminum casting and increase its service life, it is necessary to add a protective layer on the surface layer.

The function of the carrier film on the surface layer of automobile aluminum casting is, therefore, it is not necessary to carry out other special treatment in many applications. As long as the aluminum casting and selected abrasives are installed in the roller to realize rolling grinding, the better finish surface can be obtained immediately.

Although grinding and polishing can improve the surface finish of aluminum castings and make them have relative light reflection ability, the results also show that the hardness of aluminum castings depends on a large extent. If you want to make the shot peening machine get stable effect, we should use the methods of painting, vacuum plating and anode as far as possible, then we can get the stable ability, and the surface of parts can be more beautiful and generous.

For aluminum castings, there are many kinds of chemical dip coating method can make it get decorative metal coating. If it is to specify high performance, only chemical treatment is not enough, and pretreatment can be carried out before painting.

For example, the residual chemical organic solvents on the surface layer of aluminum castings should be cleaned with clean water, and then they should be dried with a clean cloth or naturally dried. If it is necessary to carry out painting treatment on aluminum casting, it should be carried out to prevent dirt on its surface layer.

If the application of more appropriate paint, so that aluminum castings can also be compared to solve the problem of painting, casting surface layer as soon as possible to get an ideal protective layer.

Aluminum casting is one of the metal forming methods, which is a way to achieve less chip and no chip. It is widely used and develops rapidly. At present, die casting alloys are no longer limited to non-ferrous metals such as zinc, aluminum, magnesium and copper, but also gradually expanded to die-casting cast iron and steel castings. The size and weight of the die casting depends on the power of the die casting machine. Due to the increasing power of die casting machine, the shape and size of casting can be from several millimeters to 1-2 meters, and the weight can be from several grams to tens of kilograms. It can be used for die casting with diameter of 2M and weight of 50kg. Aluminum casting is no longer limited to automobile industry and instrument industry, but gradually expanded to other industrial sectors.