Galvanizing Services
Rapid Protos provides professional galvanized surface treatment services, offering corrosion-resistant and wear-resistant protective coatings for various metal parts. With over 20 years of experience in precision parts manufacturing and surface treatment, we can provide high-quality zinc plating solutions for customers in industries such as automotive, aerospace, machinery, electronics, and construction.
Whether it is small-batch trial production or large-scale production, we can select the appropriate galvanizing process according to your product requirements to ensure the product has an attractive appearance, stable performance, and an extended lifespan.
What is Galvanizing?
Zinc plating (or galvanizing) is a surface treatment process that covers a layer of zinc on the metal surface. The zinc layer can effectively isolate air and moisture, prevent the base metal from undergoing oxidation reactions, thereby delaying corrosion.
- Electro-galvanizing: The surface is bright, suitable for parts with appearance requirements.
- Hot-dip galvanizing: The coating is relatively thick, suitable for outdoor and strong corrosion environments.
- Mechanical galvanizing: Suitable for small fasteners and parts that are not resistant to high temperatures.
Why Galvanize?
- Corrosion resistance: Extend the service life of parts, especially in humid or chemically corrosive environments.
- Improve appearance: Provide a silver-white or colored metallic texture, enhancing the aesthetics of the product.
- Increase wear resistance: Reduce the loss of parts in frictional environments.
- Reduce maintenance costs: Decrease the frequency of replacement and repair caused by corrosion.
- Diversified applications: Can be applied to various metal parts such as fasteners, enclosures, and structural parts.
Galvanized Surface Treatment Parameters
| Parameter | Optional Range | Description |
|---|---|---|
| Color | Silver – white, Blue – white, Color zinc, Black zinc | Customizable appearance color |
| Glossiness | High gloss, Semi – gloss, Matte | Selected according to customer requirements |
| Film thickness | 5–25 μm | Customized according to corrosion resistance requirements |
| Surface roughness | Ra 0.8–1.6 | Adapt to different precision requirements |
| Surface hardness | HV 80–200 | Enhance wear resistance |
| Wear resistance | High, Medium | Depending on the application of the part |
| Masking requirements | Support partial zinc plating | Meet functional requirements |
| Appearance usability | High | Meet the standards of appearance parts |
| Visual appearance | Smooth and defect – free | Meet the requirements of industrial and consumer products |
Galvanized Parts Surface
Materials that can be Galvanized
| Material Type | Example Material Grades |
|---|---|
| Carbon steel | Q235, 45#, A36 |
| Alloy steel | 40Cr, SCM440 |
| Stainless steel | 201, 304, 316L |
| Copper and copper alloys | H62, C3604 |
| Aluminum and aluminum alloys | 6061, 5052 |
| Magnesium alloy | AZ91D |
Industry applications of galvanized parts
- Automotive industry: Bolts, nuts, brake components, body structural parts
- Construction industry: Steel structures, guardrails, connectors
- Mechanical manufacturing: Transmission parts, brackets, enclosures
- Electronic equipment: Enclosures, support parts
- Home appliance industry: Decorative parts, support frames
- Aerospace industry: Fasteners, structural components
