What materials are used for gravity casting and do they require post-treatment?

- Jun 21, 2019-

1. Some alloy materials, if gravity casting, then, is there a post-heat treatment?

For some alloy materials, although the casting method of gravity casting can be used, after the casting is completed, some post-heat treatment processes are needed to improve the mechanical properties of the casting, for example, its tensile strength and hardness. . Moreover, it should be noted that the alloys of different compositions have different requirements on the performance of the castings, and therefore, the processing methods are also different.

2. When the AC2A aluminum alloy material is cast by metal gravity casting, how can it be carried out in the pouring process?

AC2A aluminum alloy material, using the metal gravity casting this casting method, then its casting process, its specific operation is:

Wait until the alloy material melts and heats up, and the temperature reaches 730 to 750 degrees Celsius, use GBF rotary degassing gas to remove hydrogen residue, the time is 15 to 20 minutes. Then, let stand for 15 minutes. After that, it is checked whether the test component, the slag amount, the hydrogen content, and the like are inspected. Its pouring temperature is about 720 degrees Celsius, and the deviation is no more than 10 degrees Celsius.

3. Is this material ZA27 suitable for gravity casting?

ZA27, from a professional point of view, is a high-aluminum-zinc-based alloy with an aluminum content of about 27%. Therefore, it is suitable for gravity casting. Moreover, it has some advantages, such as good strength and toughness, low specific gravity, and wide application range, mainly for these four.