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Blackening Treatment: A Subtle Shield with a Signature Look
- group name
- Surface Finishing
- Min Order
- 1 piece
- brand name
- SOMI Custom Parts Manufacturer
- model
- Blackening
- Nearest port for product export
- Rongqi Port, Shenzhen Port
- Delivery clauses under the trade mode
- FOB, CIF, EXW
- Acceptable payment methods
- T/T, PayPal, Westem Union, Cash
- update time
- Fri, 05 Dec 2025 15:30:25 GMT
Paramtents
Blackening Color Black
Packging & Delivery
-
Min Order1 piece
Briefing
Detailed
⚙️ Blackening Treatment: A Subtle Shield with a Signature Look
🧩 What Is Blackening?
Blackening (black oxide treatment) is a chemical conversion process that produces a sleek black surface on metal parts. It improves corrosion resistance, maintains precision dimensions, and enhances appearance.
🔁 Process Workflow
- Cleaning – Remove grease and impurities
- Surface Activation – Acid pickling for uniform reaction
- Black Oxide Bath – Heated chemical reaction with metal surface
- Rinsing & Sealing – Apply oil, wax, or polymer coating
- Drying & Inspection – Quality check and finish validation
🧪 Common Types of Blackening
| Type | Description | Temperature |
|---|---|---|
| Hot Black Oxide | Traditional, high-corrosion resistance | ~140–145°C |
| Cold Blackening | Room temp, good for soft metals | ~20–25°C |
| Mid-Temp Blackening | Energy-efficient, reduced steam | ~95–105°C |
| Stainless Steel Oxidizing | Special chemistry for stainless | Varies |
🎨 Color & Finish Options
- Jet black (matte or glossy)
- Charcoal black
- Dark gray (varies with sealant)
- Satin finish (oil or wax enhanced)
🎯 Application Areas
- 🚗 Automotive – gears, brackets, bolts
- 🔫 Firearms – housings, barrels
- 🧰 Industrial Machinery – tools, shafts
- 📱 Electronics – connectors, frames
- 🍽️ Consumer Goods – kitchenware, accessories
💡 Technical Features
- Minimal thickness (~1 micron)
- Corrosion resistance (with sealants)
- Low reflectivity and improved lubrication
- Eco-friendly variants available
🔍 Pros vs. Cons
| Advantages | Limitations |
|---|---|
| Elegant appearance | Requires sealant for full protection |
| Dimensional accuracy | Not suitable for non-metals |
| Improved lubricity | Less wear resistance than coatings |
| Cost-effective | Post-treatment steps needed |
🛠️ Compatible Materials
Suitable: Carbon steel, alloy steel, stainless steel (with special bath), cast iron, copper alloys
Not Recommended: Plastics, aluminum (unless pre-treated), porous metals
💬 SOMI's Surface Engineering Signature
At SOMI, blackening transforms ordinary metal components into sleek, high-performance parts. When function meets finish, the result is unmistakably SOMI.