Anodizing Production Line with Free Sulfuric Acid 180 plusmn 30 g/l Degreasing Tank

一.Product overview

1.The anodizing production line is an important equipment used for surface treatment of aluminum and its alloys. It mainly forms an oxide film on the surface of aluminum through electrochemical reactions to improve its corrosion resistance, wear resistance, and aesthetics.

2.Hard film anodizing usually uses sulfuric acid as the electrolyte, with a concentration generally between 10% and 20%. The concentration of sulfuric acid can affect the growth rate and quality of the membrane layer.

3.Future production lines will pay more attention to energy-saving design, adopting efficient power sources and circulating water systems to reduce energy consumption and water resource usage.

二. Design Condition

三.Process 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) 2 jig(rack)/tank x 4tanks = 8jig(rack)
   (2) Current density: 130A/m²
   (3) Process time: 30min
   (4) Unprocess time: 10min
   (5) Total time 30+10=40min

(6) Average anodizing layer : 0.3*1.3*30*0.77 =10.81um

5. Colour 1

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:​

( 2 rack x 4 tank x 60min/h) ÷40min x600 hour =7200jig(rack)

2) Design 50m²^/jig(rack) . Where every tank is 100m²
3) Area treatment/year : 7200jig(rack)x 50m² /jig =360000m²

2. Anodizing treatment weight:
Monthly output : 360000m²÷350m²/T*0.9=925T≧900T

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

Power Rectifier : 15000A =4unit
2) Clouring tank: 100㎡/tank×70A/m²÷0.9 = 7777A/tank

Colour Rectifier : 8000A =2unit

六. Process Chat