The final forming of Aluminum die casting parts is mainly formed by condensation of liquid aluminum alloy. In the production process of castings, if the specific steps of casting are not controlled, the quality of the castings will be difficult, and the performance indicators of the workpieces will be compromised. The useful life of castings. Therefore, two levels of adjustment must be paid attention to in the production and processing of aluminum castings.
1: Adjust the precision and finish of aluminum casting specifications
In the contemporary production and processing industry, the precision and quality standards of castings are becoming higher and higher. The near-net shape technology of castings has changed the old idea of casting only to provide blanks. Its meaning comes from reducing material consumption, energy consumption, Labor consumption, and then improve the internal and external quality of the product, and obtain market and economic benefits. As everyone knows, the precision and finish of castings are too difficult to manipulate due to the hazards and constraints of many elements. The casting is made of liquid squeeze casting. It has the unique advantages of maintaining near-net shape. The inner wall and appearance design of the casting at the frame level are squeezed at one time with casting measures to make it close to the ultimate appearance of the part. The processing and assembly process flow is reduced to a minimum; in terms of specification precision and process performance, the casting can be close to the final regulations of the product to ensure a margin or a small margin; at the same time, the preserved initial surface of the casting is beneficial to maintain The corrosion resistance and fatigue resistance of the castings will increase the life of the product.
2: Generation and regulation of crystalline and coagulated tissue
The structure of liquid aluminum alloy, the generation and growth of crystal nuclei, the size, direction and characteristics of crystals are closely related to the condensed structure of castings, and they have a significant impact on the process performance and tensile strength of aluminum castings. The significance of adjusting the solidification structure of castings is also in order to obtain the desired structure. To adjust the solidification structure, it is necessary to have a comprehensive understanding and in-depth analysis of its production mechanism, formation process and hazardous elements. The feasible ways to adjust the organization that have been established at this stage include deterioration, creation, dynamic product formation, sequential solidification, and rapid solidification.