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Instantly let you understand the key reasons for the blackening of aluminum alloy die castings
- 2020-06-09-

According to the editor of Jie Aosi Die Casting Factory, the current application of aluminum alloy die castings is becoming more and more extensive, but because aluminum alloy is very lively, although it has good fluidity and casting performance, it is easy to change during use. Black, often customers receive aluminum alloy die-casting parts, due to improper storage problems, resulting in blackening, corrosion and other phenomena of the die-casting parts, so today Jie Aosi Die Casting will explain to you what can cause aluminum The blackening of alloy die castings may be seen from these five major reasons:

Do not use cleaning agents:

The cleaning agent used is highly corrosive, causing the die-cast aluminum to corrode and air oxidation.


Logistics warehouse management is not timely:

If the aluminum alloy die-casting parts are stored in the warehouse with different aspect ratios, the mold growth will be different.


Process technology is not scientific:

The negligence of aluminum alloy die castings after cleaning or pressure inspection sets a standard for mold growth and blackening of castings and accelerates the conversion of mold.


Environmental factors of aluminum alloy profiles:

Aluminum is a bright metal material. It is very easy to oxidize and darken or grow mold under the necessary temperature and environmental humidity standards. It is determined by the characteristics of aluminum itself.

The internal elements of aluminum alloy profiles:

Many die-casting manufacturers do not do everything to clean up after aluminum die-casting and mechanical processing processes, or simple tap water cleaning, which cannot guarantee complete cleaning and tidiness. There are residual corrosion chemicals on the surface of die-cast aluminum, such as release agent, cutting oil, and saponification liquid. Substances and other dirt, this kind of dirt accelerates the rate of blackening of mould spots on aluminum alloy die castings.


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