Sometimes people don't understand why aluminum castings turn white. What exactly causes the whitening of aluminum alloy castings? Today, Dongguan aluminum alloy casting processing factory - Chengzhu Metal will explain to you the reasons for this phenomenon.

To put it bluntly, the whitening of aluminum castings is a defect. When encountering such products, everyone must be cautious and not be deceived by the one-sided words of the suppliers. Now let's talk about the causes of such defects.

The reason for the whitening of aluminum alloy castings is often that the positions of these whitening points fail to meet the sealing requirements, and it usually occurs on thin walls. The specific reasons for such problems are roughly that the feeding of the casting is insufficient during our crystallization process, or the position where the aluminum alloy liquid is introduced is incorrect, the temperature is inappropriate, the pouring speed is too fast, or the solidification principle does not conform to the sequence can also lead to the above-mentioned defects. Another issue is that the burrs of aluminum alloy castings are large, or the cooling of aluminum alloy castings is slow.