Surface Treatment Services
Quality starts with finish. Zorapid delivers integrated surface treatment for CNC & injection molded parts. 20+ premium finishes strengthen, protect and beautify your components.
- One-stop full-process solutions
- Fast delivery and idea
- Full material compatibility
Several Common Surface Finishes
As-Machined Finish
When precision matters more than polish, choose as-machined finish. A raw, unprocessed surface straight from CNC machining, with visible tool marks and natural metallic luster. No extra processes, no extra cost — just strict tolerances for your design. Ideal for internal functional parts: structural brackets, inserts, and components that require precise fit but not cosmetic perfection.
Bead Blasting
Bead blasting uses fine glass beads to impact the part surface, creating a uniform, non-reflective matte finish. This process effectively removes machining tool marks, smooths the workpiece, and resists fingerprint smudges and micro-scratches. It is the ideal choice for consumer electronics and decorative exterior components that demand a modern, refined aesthetic.
Brushing
Brushing produces consistent directional textures on metal surfaces via high-precision mechanical abrasion. Technique creates a delicate hairline finish with a silky semi-gloss sheen, effectively masking product and minor scratches. Widely adopted for high-end decorative panels, kitchen appliances, and premium metal-textured desktops, it delivers an elegant industrial aesthetic.
Polishing
Electrolytic and mirror polishing. These techniques remove surface flaws for ultra-smooth, high-gloss finishes and top-tier quality. Ideal for medical and optical parts where precision and smoothness are essential.
Tumbling
Our tumbling (vibration/barrel grinding) delivers smooth, burr-free parts. It efficiently deburrs and finishes high-volume work, softening edges for a uniform matte surface. Great for complex, tiny parts hard to finish by hand.
Grinding
Grinding uses rotating abrasive wheels for ultra-precision finishing. It trims tiny material to ensure flatness and tight tolerances, ideal for hardened metal parts like shafts and gears where regular machining falls short.
Precision Mechanical Finishing Services & Abrasive Processing
Knurling
Our knurling service creates straight, diagonal, or diamond patterns on cylindrical parts to boost grip friction. Ideal for tool handles, control knobs, and fasteners, it improves operational safety and control while adding a refined, industrial aesthetic—perfect for components where reliable manual interaction is critical.
Lapping
Our lapping service uses a rotating plate and fine abrasive slurry to achieve ultra-flat, ultra-smooth surfaces. By removing microscopic material layers, we correct tiny imperfections and deliver Ra 0.01–0.1 μm finishes—ideal for components where flatness and smoothness are critical to performance.
Honing
Rotating abrasive rods correct taper, ovality, and other micro-irregularities, while creating a cross-hatched mesh texture for optimal lubrication retention. Delivering finishes up to Ra 0.1 μm, it’s ideal for hydraulic cylinders, engine cylinders, and precision bearings where tight form accuracy and low friction are critical.
POM Surface Treatment Comparison
Chemical & Electrochemical Metal Finishing Solutions
Anodizing Parts
Our anodizing service creates a tough, bonded oxide layer on aluminum surfaces—resistant to corrosion, wear, and peeling. Available in a spectrum of colors, it’s the ideal choice for consumer electronics, automotive parts, and industrial components that need both aesthetic appeal and long-term durability.
Passivation
Our passivation service removes free iron and machining contaminants from stainless steel, forming a corrosion-resistant passive layer. Suitable for medical devices, aerospace parts and food processing equipment, it provides consistent protection without changing dimensions or mechanical properties.
Blackening
Our blackening service creates a thin, bonded magnetite layer on metal surfaces—delivering a matte black, non-reflective finish with zero dimensional growth. Perfect for precision gears, optical components, and aerospace hardware, it provides mild corrosion protection without compromising tight tolerances or critical fits.
Electroplating & Coating Solutions
Zinc Plating
Our zinc plating service provides strong corrosion protection for ferrous parts. The zinc-passivate layer acts as a sacrificial barrier, preventing red rust via oxidation resistance. Ideal for industrial hardware, fasteners and mechanical parts, it maintains performance long-term without affecting dimensions.
Nickel Plating
Our nickel plating service combines premium corrosion protection with high-gloss finish, wear resistance, and conductivity. Ideal for precision machinery, valves, and high-end electronics, it boosts surface hardness to 200–400 HV, extending part lifespan while maintaining precise dimensional tolerances.
Powder Coating
Our powder coating service delivers a tough, solvent-free finish for outdoor heavy-duty parts. Electrostatically applied and heat-cured, it forms a UV-resistant plastic layer that shields against scratches, cracks, and oxidation—ideal for industrial equipment, architectural hardware, and outdoor machinery.
FAQ
What surface treatment services do you provide?
We offer full-range treatments: anodizing, hard anodizing, sandblasting, polishing, passivation, black oxide, plating (nickel, zinc, chrome), PVD coating, anti-corrosion coating, laser marking and hydrophobic coating.
What colors are available for anodizing?
Standard colors: silver, black, gold, blue, red, grey. Custom special colors are also acceptable based on your samples or color codes.
Can you do customized patterns or logos via laser marking?
Sure. We support custom text, logos, serial numbers and patterns on metal and plastic surfaces, clear and durable.
Will surface treatment affect part dimensional tolerance?
Thin-film processes like passivation and ordinary anodizing have negligible impact. We control film thickness strictly for high-precision parts to keep tolerance within range.
Do you accept separate surface treatment orders?
Yes. We accept standalone surface treatment orders, as well as one-stop service of machining + surface finish.