How are surface treatments integrated into the workflow?

Sequential Integration within CNC Machining Processes

Surface treatment is an essential step built directly into the overall CNC machining process workflow. After precision machining operations such as CNC milling, CNC turning, or multi-axis machining, all components undergo quality inspection before surface finishing begins. The goal is to ensure that no dimensional inaccuracies affect subsequent coating adhesion. For prototypes made under CNC machining prototyping, surface treatment validation is often included early in the development phase to verify visual and functional outcomes.

Optimizing Surface Treatments for Material Characteristics

Each material requires a customized finishing sequence. For example, aluminum 6061-T6 components often undergo anodizing treatment to enhance their corrosion resistance and surface hardness. Stainless steels such as SUS304 or SUS316L benefit from passivation to remove free iron and maintain clean, oxide-protected surfaces. For heat-resistant parts made from Inconel 718 or titanium alloys, such as Ti-6Al-4V, post-machining heat treatments stabilize the microstructure before applying coatings, including thermal barrier coatings.

Workflow Coordination Between Machining and Finishing

To maintain efficiency, finishing stages are planned concurrently with machining schedules. After surface preparation (cleaning, degreasing, and masking), coatings such as PVD coatings or powder coating are applied. Post-process testing verifies thickness, adhesion, and gloss uniformity before final inspection. For functional surfaces, operations like electropolishing or tumbling and deburring are integrated between machining and coating stages to guarantee smoothness and dimensional precision.

Cross-Industry Application of Integrated Finishing

Different industries apply surface treatments to fulfill performance-specific goals. In aerospace and aviation, coatings like anodizing or TBC ensure durability under extreme thermal and oxidative stress. The automotive sector relies on powder coating and electroplating for wear resistance and corrosion protection. For medical devices, electropolishing and passivation provide sterile, biocompatible surfaces essential for implantable and surgical components. The integration of machining and finishing steps ensures shorter turnaround, stable quality, and repeatable performance across these industries.