Guangdong MEI-AL Technology Co., Ltd.
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High Extrusion Ratio Anodizing Production Line for 2.5kg/m sup2 Aluminum
一.Production Description
1.Immerse the cleaned and acid etched aluminum products into an anodizing tank and apply electricity for anodizing. Electric current passes through aluminum products, forming a uniform layer of aluminum oxide film.
2.Before anodizing, aluminum products need to undergo cleaning and acid etching treatment to remove surface oil stains, oxide layers, and other impurities.
3.Immerse the cleaned and acid etched aluminum products into an anodizing tank and apply electricity for anodizing. Electric current passes through aluminum products, forming a uniform layer of aluminum oxide film.
二. Design Condition
| 1 | Alloy | Aluminium 6061 to 6063 or others |
| 2 | Anodizing film thinkness | 10~ 12µm micron |
| 3 | Average coverage area | 350m²/T (ton) |
| 4 | Max aluminium profile length | 6500mm |
| 5 | Extrusion ratio | 2.5kg/m² |
| 6 | Working hour/m | 300d/m x 20h/d = 600h/m |
| 7 | Racking system | Three fixtures /rack |
| 8 | Racking operation | Manual |
| 9 | Equipment Usage Rate | 0.9 |
| 10 | Power supply | AC 3phase 380v 50hz |
| 11 | Control Power | AC220V 50Hz |
| 12 | Water supply | 2kg/cm²·G |
| 13 | Hot steam | 6kg/cm²·G |
| 14 | Compressor air | 6kg/cm²·G |
三.Process Tank
| 1 | Degreasing 【Free sulfuric acid 180±30 g/l】 | 1 Tank |
| 2 | Alkaline Etching【Free alkali 40-60g/l,Al3+ 30-120g/】 | 2 Tanks |
| 3 | Neutralization 【Free sulfuric acid180±20g/l】 | 1 Tank |
| 4 | Anodising 【Free sulfuric acid 140-180g/l,Al3+≤20g/l】 | 5 Tanks |
| 5 | Colouring 【stannous sulfate 3-8g/l,Free sulfuric acid 15-25g/l,PH 0.8-1.2】 | 2 Tanks |
| 6 | Medium Temperature Sealing【PH 5-6.5,Nickel ion0.8-1.3g/l,Fluorion0.3-0.7 g/l】 | 3 Tank |
四. Treatment Process:
(6) Average anodizing layer : 0.36*1.3*30*0.77 =10.81um
1) Clour process: Mix Salts
2) Quantity:2 jig(rack)/tank x 1tanks = 2jig(rack)
3) Current density: 70A
4) Process time: 2-8min
6. Sealing
1) Sealing menthod: Sealing at Medium or Normal Temperature
2) Quantity:6jig(rack)/tank x 1 tank
3) Process time 10-15min
五. Design Parameter and Setting
1. Anodizing treatment area:
1) Each anodizing process tank need 40min ,where total jig(rack)/year:
( 2rack x 5 tank x 60min/h) ÷40min x600 hour =9000jig(rack)
2) Design 50m²/jig(rack) . Where every tank is 100m²
3) Area treatment/year : 9000jig(rack)x 50m² /jig =450000m²
2. Anodizing treatment weight:
Monthly output : 450000m²÷350m²/T*0.9=1157.1T≧1000T
3. Power consumption:
1) Anodising Tank:100m²/tank* 130A/ m²÷0.9=14444A/tank
Power Rectifier : 15000A =5unit
2) Clouring tank: 100㎡/tank×70A/m²÷0.9 = 7777A/tank
Colour Rectifier : 8000A =2 unit
六. Process Chat
| Discription for Un | ||
| 1 | De | Degreasing |
| 2 | Rs | Rinsing |
| 3 | HW Rs | Hot Water Rinsing |
| 4 | AE | Alkaline Etching |
| 5 | Ne | Neutralization |
| 6 | An | Anodizing |
| 7 | Cl | Coloring |
| 8 | Sl | Sealing |
| 9 | MU | Material Unloading |
| 10 | Pc | Packing |
