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Low-temperature Hard Anodizing Surface Treatment for Aluminum Alloy Parts
This precision machined aluminum alloy part adopts integrated surface treatment of low-temperature DC hard anodizing + red dyeing & sealing. Uniform anodic film forms on inner gear slots and outer surface, with high hardness, wear resistance, corrosion resistance and insulation performance. It achieves consistent high-quality anodizing effect inside and outside, suitable for small-batch customized surface treatment.
Quick Info:
- Substrate Process: 3-Axis CNC Precision Milling
- Substrate Material: 6061 Aluminum Alloy (7075 Optional)
- Surface Treatment Process: Red Low-temperature Hard Anodizing (Dyeing + Sealing)
- Anodic Film Thickness: 8~12μm
- Treatment Grade: Industrial Grade Wear-resistant Insulating Hard Grade
- Production Methods: Small-batch Custom Surface Treatment, Rapid Sampling, Mass Anodizing Processing
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KT TOOL provides a wide range of surface finishing services to enhance both the performance and appearance of machined and printed parts. Our finishing processes improve corrosion resistance, wear resistance, and surface durability while ensuring consistent color, texture, and visual quality. Each treatment is carefully selected based on material type and application needs, whether for protective purposes or high-end appearance.
Core Characteristics of Surface Treatment
- Low-temperature hard film forming, film hardness is much higher than ordinary decorative anodizing
- Full-coverage anodizing on internal gear slots, consistent color inside and outside without chromatic aberration
- Red penetration dyeing, colorfast, non-peeling, Grade 0 cross-cut adhesion
- Multi-protection of high hardness & wear resistance, salt spray corrosion resistance and electrical insulation
- Delicate matte appearance texture, stable batch color consistency, suitable for small-batch customized treatment
Special Technical Key Points
- 0℃ low-temperature hard film forming, dense and hard film, different from normal-temperature ordinary decorative anodizing
- Micropore penetration dyeing, not surface spraying, never fading and peeling off
- Uniform film forming on complex internal gear slots, consistent anodizing effect inside and outside
- Ceramic anodic film with full insulation performance, meeting electrical safety standards
- Metallurgical bonding film with substrate, high adhesion, no cracking, no peeling and no falling off
Advantages of Small-batch Treatment
- Support independent scheduling for single-piece & small-batch anodizing, no large MOQ requirement
- Stable batch color consistency and controllable chromatic aberration for low-temperature hard anodizing
- Uniform film forming on complex internal gear slots, coloring inside cavity unavailable for spraying process
- Fast delivery time, high cost performance for small-batch customization
Key Process Parameters
| Process Item | Typical Parameter Value |
|---|---|
| Electrolyte Solution | 180±5g/L Sulfuric Acid Electrolyte |
| Process Temperature | 0℃±2℃ Low-temperature Hard Anodizing |
| Current Density | 1.2~1.5A/d㎡ |
| Oxidation Duration | 45~60min |
| Anodic Film Thickness | 8~12μm Hard Film |
| Film Micro Hardness | HV300~380 |
| Dyeing Condition | Acid red organic dye, constant temperature 55℃, penetration dyeing for 20min |
| Sealing Condition | Room-temperature nickel salt sealing for 15min |
