Electrogalvanized
|
Categories of electro-galvanized material |
Standards and grades |
Max Zn Coating (g/m2) |
Thickness (mm) |
Width (mm) |
Length (mm) |
Coil inside diameter (mm) |
|
|
Grade |
Standard |
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|
General use |
SECC, BLCE+Z, DC01E+Z |
Q/BQB430-2009 |
90/90 |
0.3-3.5 |
800-1830 |
1000-6000 |
508, 610 |
|
Used for drawing |
SECD, BLDE+Z, DC03E+Z |
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|
Used for deep drawing |
SECE, BUSDE+Z, DC04E+Z |
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Used for special deep drawing |
SECF, DC05E+Z, BUFDE+Z |
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Used for extra deep drawing |
BSUFDE+Z, DC06E+Z |
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|
Used for special extra deep drawing |
DC07E+Z |
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SMSTEELApplication
Thus, electrogalvanized products become:
- SPCC → SECC
- SPCD → SECD
- SPCE → SECE
- SPCF → SECF
- SPCG → SECG
Electrogalvanizing Process
Electrogalvanizing electrodeposits a zinc layer onto steel substrates using DC current through a zinc-salt electrolyte solution. This process:
- Provides corrosion resistance
- Extends service life
- Enhances aesthetic quality
SMSTEELApplication
**Corrosion Protection Mechanism:**
Zinc's oxidation resistance protects steel in both dry and humid environments. If damaged, a zinc-steel galvanic couple sacrificially protects the substrate.
**Standard Process Flow:**
1. Surf- Alkaline degreasing → Hot water rinse → Acid pickling → Rinsing
2. Electroplating Zinc electrodeposition → Rinsing
3. Post-treatment Chromate passivation → Hot water rinse → Drying
4. Quality Assurance - Inspection → Packaging
SMSTEELproducts display
