Surface Finishing Services
Dahong Precision Factory provides one-stop mechanical manufacturing and surface treatment services. CNC Machining improves the beauty and functionality of your metal and plastic parts. Powder Coating, PVD, nickel plating, chromium plating, Shot Peening, Hard Anodizing, anodizing, DLC Coating and other Surface Treatment Services.
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One-Stop Metal Finishing Services
9+ Years Metal Finishing Expertise
Medical grade coating services for precision parts
Low MOQ Manufacturing
72-hour Turnaround Coating
Surface Treatment Solutions
Dahong Precision provides one-stop surface treatment services: through advanced processes such as electroplating, coating and anodizing, you can significantly improve the corrosion resistance, wear resistance and beauty of your parts, support customized needs, and meet the dual requirements of precision manufacturing efficiency and quality.
Nickel Plating
Nickel plating of metals (steel, copper, aluminum) provides excellent corrosion resistance, wear resistance and electrical conductivity to parts, while combining precision dimensional restoration and decorative surfaces, making it an efficient surface treatment solution to improve the performance and economy of your precision parts.
Chrome Plating
Chrome plating allows parts to have ultra-hard wear resistance, long-term corrosion resistance, low friction coefficient, high temperature resistance and functional conductivity, widely used in machinery, automotive and precision manufacturing fields, and through the trivalent chromium process upgrade to meet environmental regulatory requirements.
PTFE
Ultra-low friction coefficient, excellent corrosion resistance to strong acid and alkali, high temperature resistance, permanent non-stickiness and excellent electrical insulation, widely used in food machinery, chemical valves and other anti-stick anti-corrosion scenes, but the mechanical strength is low, need to avoid high load wear environment.
Anodize
Anodizing aluminum parts through electrochemical treatment to form a dense alumina film, significantly improve corrosion resistance, wear resistance and surface decoration, while enhancing insulation and coating adhesion, is an important process to extend the service life and take into account the beauty of the process.
DLC
DLC coating, also known as diamond-like coating, can improve the hardness of mechanical parts significantly increase the hardness of mechanical parts (HV2000+), reduce the coefficient of friction, and enhance wear and corrosion resistance, while suitable for a variety of materials.
Passivation
Custom passivated parts form a protective oxide film on the surface of the metal, which can improve corrosion resistance, prevent oxidation and extend life and reduce costs. Passivation can also enhance the aesthetics of the metal as it helps to maintain surface integrity.
Black oxide
Black oxide creates a uniform and dense oxide film on the surface of the ferrous metal to improve rust protection while providing a matte black appearance to enhance aesthetics or retain lubricant to reduce long-term corrosion and wear. Widely used for gears, fasteners and tools in automotive, aerospace and mechanical fields.
Galvanization
Galvanizing is a cost-effective surface treatment process in which CNC parts are hot dipped or electroplated to form a thin layer of zinc on the surface of the steel. Provides excellent corrosion resistance, improved electrical conductivity and durability. Widely used in construction, automobile and other fields.
Surface Treatment Portfolio Services
Dahong Precision has many years of surface treatment experience, according to your project needs, follow the processing compliance, for different materials, different parts functions, to provide customized parts of professional precision machining services, rapid proofing services.
- Machined Surface
- Bead Blasting
- Parts Polishing
- CNC Brushing
- Laser Printing On Metal
- Heat Treatment
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Machined Surface
CNC precision machining can achieve Ra0.4-1.6μm high finish surface, by optimizing the cutting parameters and tool path to control the texture direction, the workpiece can be directly assembled after processing only a simple deburring, to meet the need for fast delivery of parts without polishing.
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Bead Blasting
The CNC machined parts through Bead Blasting service can make the parts more smooth and beautiful, and the particle size of 0.1-3.0mm abrasive can be accurately regulated to achieve the roughness range of Ra0.8-6.3μm. Can efficiently remove oxide layer/burr, enhance coating adhesion, suitable for stainless steel/aluminum alloy/steel/copper and other materials.
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Parts Polishing
Professional CNC precision machining + mirror polishing one-stop service, metal parts polishing is the process of mirror processing by friction or chemical treatment to achieve Ra 0.4μm or better smooth, glossy surface.
The whole process of vacuum packaging of polished parts is closed to eliminate secondary pollution.
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CNC Brushing
The wire drawing process improves the wear resistance, corrosion resistance and appearance texture of hardware through customized texture, achieves matte/semi-matte texture, and reduces processing costs. It is widely used in industrial equipment to meet the dual needs of function and beauty.
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Laser Printing On Metal
CNC can customize the engraving content on the parts according to your project requirements, laser marking machine prints patterns on the surface of the parts, etch part numbers, logos, text and other content.
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Heat Treatment
CNC parts are heat treated to improve their physical and mechanical properties. Improve hardness, reduce brittleness, increase strength, enhance toughness, eliminate stress and size stability.
Surface Finishing Service FAQ
What surface treatment process is suitable for parts that require high electrical conductivity?
The electrical conductivity of the parts can be improved by gold-plated, silver-plated, nickel-plated surface treatment.
Can you handle surface finishing for prototype or single-piece quantities with the same quality control as bulk production?
Yes, we offer no-MOQ surface treatment
What's the best polished surface example?
A mirror is often seen as the best polished surface. Its smooth and highly reflective finish comes from precise polishing.
Could you please tell me if DLC coating is expensive?
DLC coating adopts PECVD/CVD composite deposition technology to achieve 2000-4000 HV ultra-high hardness and < 0.15 friction coefficient, and its process cost is controlled by the accuracy of vacuum coating equipment (±3% film thickness uniformity). In the field of precision medical devices and automotive power components, although the initial cost is high, it can reduce the wear rate by 3-5 times. Life cycle cost savings of more than 40%.
Is bead blasting a coating process?
Shot peening is not a coating, but a surface treatment technique that creates a clean surface and enhances subsequent coating adhesion.
What is Type III anodizing?
Type III anodizing, also known as hard anodizing, is an electrochemical process that creates a thick, durable oxide layer (25-150μm) on aluminum surfaces, offering superior hardness (HV 300-500), corrosion resistance, and wear protection for high-stress applications in aerospace, automotive, and industrial sectors.
How to confirm whether stainless steel has been passivated?
Passivated stainless steel surfaces are usually clean and smooth, and chemical or water break tests can confirm passivated layers.
Let's Make Something Extraordinary Together
At Dahong Precision, we are more than just a CNC machining supplier, we are your partner in precision manufacturing. Whether you need simple parts or highly complex parts, our surface furnishing services deliver the quality and reliability you deserve. Contact us today to discuss your project and find out how we can help you achieve your goals.