Anodizing Production Line with Environmentally Sustainable Design and Improved Efficiency

一.Description

1.Anodic oxidation is the electrochemical oxidation of metals or alloys. The process in which aluminum and its alloys form an oxide film on aluminum products (anodes) under the action of an external current under corresponding electrolytes and specific process conditions.

2.Using metal or alloy components as anodes, an oxide film is formed on their surface through electrolysis.

3.Metal oxide thin films alter the surface state and properties, such as surface coloring, improving corrosion resistance, enhancing wear resistance and hardness, and protecting metal surfaces.

二. Design Condition

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】 3 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:

1. Degreasing
   (1) 6jig(rack)/ tank x 1 tank=6jig(rack)
   (2) treatment time: 2-5min
2. Alkaline Etching
   (1) 6jig(rack) / tank x 2 tank=12jig(rack)
   (2) treatment time: 3-15min
3. Neutralization
   (1) 6jig(rack) / tank x 1 tank=6jig(rack)
   (2) treatment time: 1-5min
4. Anodizing
   (1) 3 jig(rack)/tank x 5tanks = 15jig(rack)
   (2) Current density: 130A/m²
   (3) Process time: 30min
   (4) Unprocess time: 10min
   (5) Total time 30+10=40min

(6) Average anodizing layer : 0.36*1.3*30*0.77 =10.81um

5. Colour 1

1) Clour process: Mix Salts

2) Quantity:3 jig(rack)/tank x 1tanks = 3jig(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:​

( 3 rack x 5 tank x 60min/h) ÷40min x600 hour =13500jig(rack)

2) Design 50m²^/jig(rack) . Where every tank is 100m²
3) Area treatment/year : 13500jig(rack)x 50m² /jig =675000m²

2. Anodizing treatment weight:
Monthly output : 675000m²÷350m²/T*0.9=1735T≧1500T

3. Power consumption:
1) Anodising Tank:100m²/tank* 130A/ m²÷0.9=14444A/tank

Power Rectifier : 15000A =3unit
2) Clouring tank: 100㎡/tank×70A/m²÷0.9 = 7777A/tank

Colour Rectifier : 8000A =3 unit

六. Process Chat

MEI-AL Technology has been committed to serve the aluminum profile surface treatment industry with its strong technical force, excellent production and processing, scientific management methods and excellent management style. Mei-al main production: anodizing, coloring, electrophoresis production line, products have special high-power silicon control rectifier, high-power high-frequency switching power equipment, electrophoresis workshop pure water equipment(RO machines), refining equipment, electrophoretic paint recovery equipment, electrophoresis curing furnace,loading and unloading machines,1T+1T professional anodizing cranes, anodizing tank temperature control system and production line automatic control system, etc.

In our perpetual effort and support of our partners in the industry,MEI-AL Technology  has obtained outstanding achievements and is still maintaining a rapid development speed.With the operation spirit of “Professional, Concebtration, Integrity, Co-win”, MEI-AL Technology will provide with you excellent products and perfect services, in the rooted concept of Growind Up with You !

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