A mold with a correct and reasonable structure is a prerequisite for the smooth progress of die-casting production, and plays an important role in ensuring the quality of castings.
Due to the characteristics of the die-casting process, the correct selection of various process parameters is the determining factor for obtaining high-quality castings, and the mold is the premise for the correct selection and adjustment of various process parameters. The mold design is essentially a comprehensive reflection of the expected various factors that may occur in die-casting production.
If the mold design is reasonable, there will be fewer problems encountered in actual production, and the qualified rate of castings off the machine is high. On the contrary, the mold design is unreasonable. For example, when designing a casting, the wrapping force of the dynamic and fixed molds is basically the same, and the pouring system is mostly in the fixed mold, and it is placed on the Guannan die-casting machine where the punch cannot feed after the injection. Normal production cannot be achieved, and the castings are always stuck to the fixed mold. Although the finish of the fixed mold cavity is very smooth, the phenomenon of sticking to the fixed mold still occurs due to the deep cavity.
Therefore, when designing the mold, it is necessary to comprehensively analyze the structure of the casting, be familiar with the operation process of the die-casting machine, understand the possibility of adjusting the die-casting machine and process parameters, master the filling characteristics under different conditions, and consider the mold processing method, drilling and fixing form. Only then can a practical mold that meets production requirements be designed.
