Surface Treatment

Anodizing is an electrochemical surface treatment that converts the outer layer of metal into a durable, corrosion-resistant anodic oxide finish. Unlike paint or plating, which are applied to the surface and can chip or peel, anodizing is fully integrated with the underlying metal substrate. While this process can be performed on other nonferrous metals such […]

Introduction to Black Oxide Coating (Blackening) When designing precision components, engineers often call out “Black Oxide” on their blueprints for its sleek, dark appearance and minimal dimensional change. However, black oxide is one of the most misunderstood surface treatments in the manufacturing industry. Many buyers assume it offers permanent rust protection or treat all blackening

✓ Metrology Fact-Checked | Expert technical review by Mose Li | Standards Compliance: ISO 4287 / ASME B46.1 Introduction to Surface Roughness in Manufacturing When reviewing a blueprint from Europe, North America, or Asia, you might see surface finish callouts written as 32 RMS, 0.8 Ra, or N6. For a mechanical engineer or a CNC

✓ Fact-Checked by NPI Engineers | Expert review by Mose Li | Focus: 3D Printing to CNC Transition Introduction to 3D Printing Surface Roughness Unlike precision CNC machining, which subtracts material to leave a smooth face, 3D printing builds parts layer by layer. This additive process inherently creates a “staircase effect,” resulting in visible layer