When choosing die-cast lighting parts, do I need to check whether they have been surface treated?

Surface treatment directly affects the appearance, durability, and functionality of die-casting lighting parts, and must be rigorously evaluated. The following are key considerations:

1. Corrosion and oxidation resistance
Untreated surface: Die cast parts (such as aluminum alloys and zinc alloys) are prone to oxidation and rusting in humid or acidic environments, which shortens their service life.
Surface treatment (such as anodizing, electroplating): forms a protective layer to prevent corrosion, suitable for high corrosion environments such as outdoor, coastal, industrial, etc.

2. Appearance and Decorative Features
Commercial/home lighting: requires high-quality surfaces (such as frosted, brushed, electroplated glossy surfaces) to enhance product quality.
Untreated or rough surface: prone to leaving fingerprints and scratches, affecting aesthetics, only suitable for concealed engineering or low-end products.

3. Wear resistance and scratch resistance
Spray coating or electrophoresis treatment: enhances surface hardness and prevents collision and damage during transportation and installation.
No protective layer: It is prone to wear and tear after long-term use, exposing the substrate and affecting its appearance and corrosion resistance.

4. Impact on heat dissipation performance
Anodized aluminum oxide: can improve radiation heat dissipation efficiency, suitable for high-power LED lamps.
Excessive electroplating or painting: may hinder heat conduction, requiring a balance between aesthetics and heat dissipation requirements.

5. Insulation and safety
Special coatings (such as powder coating): provide insulation protection, prevent leakage risks, and are suitable for humid or electric shock prone environments.
Exposed conductive metal: may pose a safety hazard in high voltage or humid environments.

6. Environmental protection and weather resistance
RoHS/REACH compliant processing technology: avoids heavy metal pollution and is suitable for export or high standard markets.
Poor quality coating: prone to powdering and fading after long-term exposure to sunlight (such as cheap spray painting), affecting its lifespan and environmental friendliness.