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New product development and the renewal of old molds are often encountered in die casting production. In general, the internal and external qualities of die castings depend on die casting process parameters such as molten metal temperature, die casting pressure, speed and speed switching points. However, in most cases, it is also closely related to mold design and production. Factors affecting the mold, including the number of cavities, the design of the gating system, the type of gate (position and size), and the structure of the casting itself. In order to avoid casting defects caused by mold design, and to test and correct some problems in mold making, it is necessary to test the finished mold.
Test mode and process parameter optimization of die-casting die
The main purpose of the test mode is to find optimized process parameters and mold modification schemes. It is required to ensure that the mold can stably and uninterruptedly mass produce qualified products even if the materials, machine settings or environmental factors have changed. Limit the "adaptation" of the mold, not just to get a few good test samples.
1. Find out what's wrong with the mold
The molds produced by the mold factory are all expected to be a mold with good adaptability (ie, molding parameters or wide process conditions). However, due to poor design considerations or incomplete processing during the production process, problems often arise, such as excessive size, poor local transition, and improper structure, resulting in unqualified castings or trial production of the mold. Unable to proceed. The test mode is the simplest, direct and effective way to find the mold problem.
2. Find the best forming conditions
During the trial process, the test mode personnel can find a set of the most suitable process data, and the set of data can be used as the default value for setting the machine parameters during mass production, and the most mass production of the mold is adjusted according to the set of data. Good process conditions.
3. Verify CAE-assisted design and improve follow-up efficiency
CAE analysis software is the result of computer simulation and simulation calculation based on the specifications of real machines, the performance of real alloys and the real external environment. According to the simulation situation, the mold designer makes corresponding corrections to the mold design; when the real machine is tested, the analysis data can be directly input as the preset value, and the molder can test whether the mold design is lacking. The defects of the test module can be compared with the simulation results to provide a basis for subsequent process parameter setting.