Analysis on Casting Process Requirements and Production Process of Aluminum Die Castings
/ Industry News
/ Analysis on Casting Process Requirements and Production Process of Aluminum Die Castings
The fluidity of aluminum die castings mainly refers to the ability of alloy liquids to fill the mold. Under normal circumstances, the fluidity determines the alloy's ability to cast complex castings. The fluidity of eutectic crystal alloys is the best. There are many factors affecting the fluidity, mainly the solid phase particles of metal oxides, metal compounds and other pollutants in the composition, temperature and alloy liquid, but the external fundamental factor is the pouring temperature. And the pouring pressure (commonly known as pouring indenter).
The aluminum die-casting parts are effectively made according to the requirements of the casting process, in accordance with the requirements of the casting process, in the determination of the modeling method, the need to prepare the molding materials on the basis of the use, the precision of the casting and the entire production process The economic effect depends mainly on this process. In many modern foundry workshops, styling and core making are mechanized or automated.
When aluminum die castings are in operation, with the advancement of technology and the booming of the foundry industry, different casting preparations will be used in different casting methods during the production process, and the most widely used sand type will be used in the operation. For example, for casting, the mold preparation includes two major tasks: preparation of the molding material, molding, and core making.
The task of preparing the shape of aluminum die-casting parts is, to a certain extent, effective in selecting the appropriate raw sand, binder and auxiliary materials according to the requirements of the castings and the properties of the metal, and then according to a certain ratio They are mixed into a molding sand and core sand with certain properties.
Commonly used sand mixing equipment in aluminum die castings are a roller-type sand mixer, a counter-flow sand mixer and a continuous sand mixer. The latter is designed for mixed chemical self-hardening sand, continuous mixing, and quick mixing.
In the process of actual production of aluminum die-casting parts, under normal circumstances, in the case where the alloy has been determined, in addition to strengthening the smelting process to a certain extent, it must be changed to a certain extent.