Product Description
Chemical polishing is a non-mechanical surface treatment that smooths and brightens metal surfaces by controlled chemical dissolution. It delivers uniform, high-gloss finishes without distortion or surface damage — ideal for complex, delicate, or small components.
✅ No mechanical contact
✅ Burr-free, stress-free finish
✅ Ideal for precision and hygiene-critical industries
Types of metal polishing | ||
Mechanical polishing | Chemical polishing | Mirror finish |
Satin finish | Antique Finish | Brushed finish |
Hand polishing | Electropolishing | Stainless steel polishing |
Suitable Materials
Stainless Steel (304, 316, etc.)
Copper & Copper Alloys (Brass, Bronze)
Aluminum & Aluminum Alloys
Titanium and High-Performance Alloys
Key Benefits
| Benefit | Description |
| Uniform, mirror-like finish | No tool marks or mechanical defects |
| Non-distorting & non-contact | Safe for fragile or thin-walled parts |
| Improved corrosion resistance | Forms passive surface layers |
| Enhanced cleanability | Great for sanitary and cleanroom environments |
| Batch processing capability | Higher efficiency for industrial volume |
| Cost-effective | No abrasives, reduced labor and processing time |
| Eco-friendly (with waste control) | Modern setups reduce environmental impact |
Chemical Polishing Parameters
| Parameter | Typical Range |
| Surface Roughness (Ra) | Up to 0.1–0.2 µm |
| Temperature | 60–95°C |
| Processing Time | 2–15 minutes |
| Material Removal Rate | 2–10 µm/min |
| pH / Acidity | Strong acid environment (pH 1–3) |
| Compliance | Includes neutralization & safe acid recovery |
Purpose of Processing
| Pharma SS Tubes | Mirror finish with Ra ≤ 0.2 µm (GMP compliant) |
| Copper Heat Sinks | Oxide-free, highly conductive surface |
| Titanium Implants | Smooth and sterile-ready surfaces |
| Aluminum Facades | Aesthetic bright finish for architecture |
Product parameters
| Parameter | Specification | Parameter | Specification |
| Material | Brass (e.g., C3604, C2680, HPb59-1, etc.) | Edge Finish | Deburred, smooth, chamfered if required |
| Surface Treatment Type | Mirror Polishing for Brass | Post-Treatment Compatibility | Suitable for clear coating, anti-tarnish treatment, or lacquer finishing |
| Surface Roughness (Ra) | ≤ 0.8 μm (can be customized based on finish requirements) | Dimensional Tolerance Impact | Minimal – precision maintained during polishing process |
| Finish Appearance | Bright, reflective, mirror-like finish (anti-tarnish coating optional) | Corrosion & Tarnish Resistance | Improved when combined with coating or passivation |
| Polishing Method | Manual buffing, Mechanical polishing, Vibratory polishing | Applications | Decorative hardware, musical instruments, luxury fittings, electrical contacts |
Material Selection
Stainless steel |
Aluminum |
Brass |
Metal |
White copper |
Custom Process
Contact
Negotiation
Mass Production
Transportation
Quality Inspection
| Method | Purpose |
| Surface Roughness Testing (Ra) | Confirms smoothness of polished surface |
| Microscopy | Checks for pitting, uniformity, micro-defects |
| Visual/Gloss Inspection | Grades mirror and aesthetic quality |
| Corrosion Testing | Ensures improved material performance |
| Weight Analysis | Measures consistency in material removal |
Quality Assurance
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| Drum Polishing Machine | Vibration Grinder | Magnetic Grinding | Polishing Machine |
Our Company
FAQ
| Question | Answer |
| What is the main benefit of polishing treatment for brass parts? | Polishing significantly enhances the visual appeal of brass parts, creating a smooth, glossy, and mirror-like finish. It also helps remove machining marks, burrs, and oxidation spots. |
| Will polishing brass affect the dimensional accuracy of my parts? | No, the polishing process is carefully controlled to maintain tight tolerances. Only a minimal layer of material is removed during polishing to preserve the part's dimensions. |
| Can polished brass parts resist tarnishing over time? | Polished brass can resist tarnishing better when combined with a clear coating, anti-tarnish treatment, or lacquer finish. We offer optional post-polishing protective treatments. |
| Is mirror polishing suitable for all brass grades? | Yes, most machinable brass grades like C3604 and C2680 are suitable for mirror polishing. However, final gloss may vary slightly depending on the alloy’s composition. |
| Can I customize the level of gloss or finish on my brass parts? | Absolutely. We offer customizable polishing levels—from satin to high-gloss mirror finishes—based on your design or branding requirements. |
