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Why Should Die Casting Molds Be Tested?

Why Should Die Casting Molds Be Tested?

Why Should Die Casting Molds Be Tested?

The development of new products and the updating of old molds are often encountered in die casting production. Generally speaking, the internal and external quality of die casting part depends on the process parameters of die casting production, such as metal liquid temperature, die casting pressure, speed and speed switching point.

However, in most cases, it is also closely related to mold design and production. The factors affecting die casting molds include the number of cavities, the design of pouring and discharging system, the type of gate (location and size), and the structure of the casting itself.
In order to avoid casting defects caused by die casting mold design and to check and correct some problems in die casting mold production, it is necessary to test the finished die casting mold.

1. The test and process parameter optimization of die casting mold

The main purpose of mold test is to find out the optimal process parameters and mold modification plan, even if the material, machine settings or environmental factors have changed.
Ensure that the mold can be stable and achieve uninterrupted mass production of qualified products, maximize the "adaptability" of the mold, rather than just to obtain a few good sample.

2. Find out the problems existing in the die casting mold

The die casting mold made by the mold factory is expected to be a pair of mold with good "adaptability" (that is, wider forming parameters or technological conditions).
But often due to poor design or processing in the process of production, die casting mold often has some problems, such as out-of-tolerance size, local transition is not smooth, inappropriate structure, etc.

Thus it results in the production of unqualified castings or causes that mold trial production cannot be carried out, and mold test is the most simple, direct and effective way to find out mold problems.

3. Find out the best forming conditions of die casting mold

In the process of mold test, mold testers can find a group of the most suitable technological data, and this group of data can be used as the default value of setting machine parameters in mass production, to adjust the best process conditions of mold mass production according to the group of data

4. Verify CAE assisted design to improve the working efficiency of subsequent die casting molds

CAE analysis software is based on real machine specifications, real alloy performance and real external environment, through computer simulation results.

According to the simulation situation, mold designers make corresponding corrections to mold design; In mold test in the real machine, the analysis data can be directly input as the default value, and mold test personnel can use this to check and analyze whether there are disadvantages in mold design.

The defects of the test molds can be compared and analyzed with the simulation results, which can provide a basis for the setting of the process parameters of die casting mold.

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