The correct and reasonable mold is the prerequisite for the smooth progress of aluminum alloy die-casting production, and plays an important role in ensuring the quality of aluminum alloy die-casting parts. 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-casting parts. The mold is the prerequisite for correct selection and adjustment of various process parameters. The mold design is mainly the production of aluminum alloy die castings. A comprehensive reflection of the various factors expected.
If the mold design is reasonable, there are fewer problems encountered in actual production, and the pass rate of the castings is high. On the contrary, the mold design is unreasonable. The casting force of the fixed mold is basically the same when the casting is designed. The casting system is mostly fixed in the mold, and it is produced on the aluminum alloy die-casting machine where the punch cannot be fed after the shot, and it cannot be produced normally. The casting has been stuck to the fixed mold.
Although the finish of the mold cavity is very light, the phenomenon of sticking to the fixed mold still occurs due to the deep cavity. Therefore, in the design of aluminum alloy die-casting mold, it is necessary to comprehensively analyze the structure of the casting, familiar with the operation process of the aluminum alloy die-casting machine, to understand the possibility of adjusting the aluminum alloy die-casting machine and the process parameters, to grasp the filling characteristics under different conditions, and After considering the mold processing method, the drilling method and the fixed form, it is possible to design a mold that is realistic and meets the production requirements.
As mentioned at the beginning, the filling time of the molten metal is extremely short, and the specific pressure and flow rate of the molten metal are very high. This is extremely harsh in the working condition of the aluminum alloy die-casting mold, plus the alternating stress of the chilling heat. The impact of the impact has a great impact on the service life of the mold.
The service life of aluminum alloy die-casting molds usually refers to the natural damage caused by careful design and manufacture under the conditions of normal use, combined with good maintenance, and the modulus of aluminum alloy die-casting before being scrapped and scrapped. (including the number of scraps in aluminum alloy die-casting production).