What causes UAV Micro Screws to turn black?

2026,01,07

Currently, the aluminum die-casting industry is developing slowly, and aluminum alloy die-casting is widely used. Aluminum alloy casting is generally made by forging metal materials, and aluminum alloy profiles have excellent fluidity and ductility. However, UAV Micro Screws sometimes turn black during manufacturing. What are the reasons? Die-casting mold analysis.

1. Unreasonable production process

Neglect after finishing or pressure testing of UAV Micro Screws creates conditions for mold and blackening of castings, accelerating the mold growth process.

2. Untimely logistics and warehousing management

Storing UAV Micro Screws in warehouses at varying heights results in different mold growth rates.

3. Internal elements of aluminum alloy profiles

Many die-casting manufacturers use aluminum die-casting. If no thorough finishing is done during future machining, or if only simple tap water washing is used, the surface of the die-cast aluminum cannot be kept clean. Residues such as release agents, cutting fluids, and saponifying liquids, which are corrosive compounds, accelerate the growth of mold and blackening of UAV Micro Screws.

4. Environmental Factors for Aluminum Alloy Profiles

Aluminum is a smooth metallic material that easily oxidizes, blackens, or molds under certain temperature and humidity conditions. This is determined by the inherent characteristics of aluminum.

5. Unsuitable Cleaning Agents

Detergents are highly corrosive, causing die-cast aluminum to corrode and oxidize.

Many manufacturers, when producing UAV Micro Screws, neglect several key points, resulting in blackening of the vehicles. With proper storage conditions and timely drying, the problem of blackening can be effectively addressed.

Author:

Mr. yjfastener

E-mail:

hou@citool.com

Phone/WhatsApp:

+8615826187211