Several key elements of aluminum alloy die casting production
Date：
2021-01-12
Correct and reasonable die casting is the premise of the smooth production of aluminum alloy die casting, which plays an important role in ensuring the quality of aluminum alloy die casting. Due to the characteristics of aluminum alloy die casting process, the correct selection of various process parameters is the decisive factor to obtain high quality aluminum alloy die casting, and the mold is the premise of the correct selection and adjustment of various process parameters. Die design is mainly for aluminum alloy die casting production to fully reflect the expected variety of factors.
The correct and reasonable mold is the prerequisite for the smooth production ofaluminum alloy die castingand plays an important role in ensuring the quality of aluminum alloy die castings. Due to the characteristics of aluminum alloy die casting process, the correct selection of various process parameters is the decisive factor for obtaining high-quality aluminum alloy die castings, and the mold is the prerequisite for the correct selection and adjustment of various process parameters. Die design mainly reflects the expected factors in the production of aluminum alloy die castings
If the mold design is reasonable, there will be fewer problems encountered in actual production, and the qualification rate of castings is high. On the contrary, the mold design is unreasonable. For example, in the design of a casting, the wrapping force of the moving and fixed molds is basically the same, while the gating system is mostly produced on the aluminum alloy die-casting machine where the punch cannot feed after the injection, which cannot be produced normally, and the casting has been stuck to the fixed mold
Although the surface finish of the die cavity is very smooth, the die cavity is deep and still sticks to the die. Therefore, when designing the aluminum alloy die casting mold, it is necessary to comprehensively analyze the structure of the casting and be familiar with the operation process of the aluminum alloy die casting machine. It is necessary to understand the possibility of adjusting the aluminum alloy die-casting machine and process parameters, master the filling characteristics under different conditions, and consider the mold processing methods, drilling and fixing forms before designing a mold that is practical and meets production requirements
As mentioned at the beginning, the filling time of the metal liquid is very short, the specific pressure and flow rate of the metal liquid are very high, which is extremely bad for the working conditions of the aluminum alloy die casting die. In addition, the impact of the alternating stress of the chilling and heating has a great impact on the service life of the die. The service life of the aluminum alloy die casting die usually refers to the service life of the aluminum alloy die casting die under normal use conditions through careful design and manufacturing, Combined with the natural damage caused by good maintenance, the number of aluminum alloy die castings (including the number of scrap products in aluminum alloy die casting production) before they can no longer be repaired and scrapped
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