Q1: How does the combination of sandblasting and oxidation enhance the profile’s surface quality?

A1: Mechanical sandblasting utilizes fine micro-media to completely level out extrusion die lines, minor handling scratches, and structural surface defects. The subsequent electro-chemical oxidation process grows a dense, protective oxide barrier directly from the metal. This ensures a uniform, premium matte finish with anti-fingerprint and scratch-resistant properties.

Q2: Will the colored anodized layer peel off or fade over time in intense light?

A2: No. Because the colored layer is formed by depositing metallic salts or organic dyes straight into the microscopic pores of the anodized oxide film before it is hydrothermally sealed, the color becomes a structural part of the aluminum. It cannot peel, flake, or chip like painted films, and offers outstanding stability against UV fading.

Q3: How does your factory maintain precise color consistency across different bulk production batches?

A3: Colored anodizing is a highly sensitive electrochemical process. To guarantee a tight color delta tolerance across vast volume orders, we strictly regulate the chemical solution concentration, voltage curves, temperature control, and immersion timing in our automated anodizing lines, backed by precise digital colorimeter verification.

Q4: Is it best to perform CNC drilling and cutting before or after the sandblasting and oxidation process?

A4: To ensure that all raw cut faces, drilled holes, and counter-sunk edges receive the same uniform sandblasted texture and color coating, we highly recommend completing all precision CNC milling, tapping, and miter sawing prior to the surface treatment phase. This delivers fully protected, flawlessly finished structural pieces.