Anodizing Tank Module for Aluminum Profile Anodizing

Product Specifications

Technical details and manufacturing context for Anodizing Tank Module

Definition

The Anodizing Tank Module is a component used in aluminum profile anodizing production lines. It serves as the primary reaction vessel where aluminum profiles undergo electrochemical anodizing. The module houses the electrolyte solution, typically sulfuric acid or other acid-based solutions, and contains the cathode system. It provides a controlled environment for forming a durable, corrosion-resistant oxide layer on the aluminum surface. The module is engineered for chemical resistance, temperature stability, and integration with power supply and filtration systems. Materials on file include polypropylene (PP), stainless steel 316L, PVC, and fiberglass reinforced plastic (FRP). Key parameters include tank material (PP or FRP), wall thickness (10–20 mm), working volume (500–5000 L), temperature range (15–25 °C), temperature control accuracy (±1 °C), electrolyte concentration (150–200 g/L sulfuric acid), current density (1.5–3.0 A/dm²), voltage (12–24 V DC), electrode material (lead or titanium coated with mixed metal oxide), electrode spacing (100–300 mm), heating/cooling capacity (5–20 kW), agitation system (air agitation or pump circulation), exhaust connection (DN100–DN200), drain valve size (DN50–DN80), lining material (PVC or PP for steel tanks), service life (10–15 years), and duty cycle (continuous). Standards referenced include ASTM B580, ASTM D4101, and ASTM D3917. These standards serve as procurement references; actual compliance must be verified with the manufacturer. The module is designed for continuous operation and requires proper maintenance to achieve expected service life. For specific applications, confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The module operates on the principle of electrolysis. Aluminum profiles act as the anode and are immersed in the electrolyte solution within the tank. When direct current is applied, oxygen ions from the electrolyte combine with aluminum atoms at the surface, forming a controlled, porous aluminum oxide layer. The tank maintains consistent electrolyte composition, temperature, and current density to ensure uniform coating thickness and quality. The cathode system completes the electrical circuit, and the agitation system ensures uniform temperature and concentration. The heating/cooling system maintains the electrolyte within the specified temperature range. The exhaust system removes fumes generated during the process. The drain valve allows for quick draining and maintenance. The module's design ensures that the anodizing process is controlled and reproducible, producing a consistent oxide layer on the aluminum profiles.

Common Materials

Polypropylene (PP), Stainless Steel 316L, PVC, Fiberglass Reinforced Plastic (FRP)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Tank Material	Polypropylene (PP) or Fiberglass Reinforced Plastic (FRP)	Polypropylene (PP) or Fiberglass Reinforced Plastic (FRP) — PP for chemical resistance and cost; FRP for higher structural strength. PP for chemical resistance and cost; FRP for higher structural strength.ASTM D4101 for PP, ASTM D3917 for FRP
Tank Wall Thickness	10–20 mm	10–20 — Thicker walls for larger tanks or higher temperatures. Thicker walls for larger tanks or higher temperatures.
Working Volume	500–5000 L	500–5000 — Depends on production capacity; larger volumes for higher throughput. Depends on production capacity; larger volumes for higher throughput.
Temperature Range	15–25 °C	15–25 — Optimal for sulfuric acid anodizing; outside range affects coating quality. Optimal for sulfuric acid anodizing; outside range affects coating quality.
Temperature Control Accuracy	±1 °C	±1 — Required for consistent oxide layer thickness. Required for consistent oxide layer thickness.
Electrolyte Concentration (Sulfuric Acid)	150–200 g/L	150–200 — Typical for Type II anodizing. Typical for Type II anodizing.ASTM B580
Electrode Material	Lead or Titanium coated with mixed metal oxide (MMO)	Lead or Titanium coated with mixed metal oxide (MMO) — Lead for cost; MMO for longer life and lower maintenance. Lead for cost; MMO for longer life and lower maintenance.
Electrode Spacing	100–300 mm	100–300 — Affects current distribution and coating uniformity. Affects current distribution and coating uniformity.
Heating/Cooling Capacity	5–20 kW	5–20 — To maintain temperature within range; depends on ambient and heat generation. To maintain temperature within range; depends on ambient and heat generation.
Agitation System	Air agitation or pump circulation	Air agitation or pump circulation — Ensures uniform temperature and concentration. Ensures uniform temperature and concentration.
Exhaust System Connection	DN100–DN200 mm	DN100–DN200 — For fume extraction; size depends on tank width. For fume extraction; size depends on tank width.
Drain Valve Size	DN50–DN80 mm	DN50–DN80 — For quick draining and maintenance. For quick draining and maintenance.
Lining Material	PVC or PP lining for steel tanks	PVC or PP lining for steel tanks — If tank is steel, lining protects against corrosion. If tank is steel, lining protects against corrosion.
Service Life	10–15 years	10–15 — With proper maintenance and within operating conditions. With proper maintenance and within operating conditions.
Duty Cycle	Continuous	Continuous — Designed for 24/7 operation. Designed for 24/7 operation.
Electrolyte Temperature	15–25 °C	15–25 °C — Outside this window: Below 15°C: reduced coating thickness and hardness; above 25°C: porous coating, reduced corrosion resistance. Outside this window: Below 15°C: reduced coating thickness and hardness; above 25°C: porous coating, reduced corrosion resistance.
Sulfuric Acid Concentration	150–200 g/L	150–200 g/L — Outside this window: Below 150 g/L: low conductivity, uneven coating; above 200 g/L: excessive etching, rough surface. Outside this window: Below 150 g/L: low conductivity, uneven coating; above 200 g/L: excessive etching, rough surface.
Current Density	1.5–3.0 A/dm²	1.5–3.0 A/dm² — Outside this window: Below 1.5: thin coating; above 3.0: burning, powdery coating. Affects coating thickness and hardness.ASTM B580
Voltage	12–24 V DC	12–24 V DC — Outside this window: Below 12V: insufficient current; above 24V: risk of arcing and damage to coating. Depends on tank size and electrode spacing.
Electrolyte Level	80–90% of tank height	80–90% of tank height — Outside this window: Low level: exposes electrodes, uneven current; high level: overflow, dilution. Outside this window: Low level: exposes electrodes, uneven current; high level: overflow, dilution.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Tank Body Part
Primary container holding the electrolyte solution, constructed from chemically resistant material.

Material: Polypropylene (PP) or FRP
Cathode Rail System
Conductive rails or bars that hold the cathode plates and distribute electrical current.

Material: Titanium or Stainless Steel 316L
Heating/Cooling Coils
Maintains precise electrolyte temperature within the required operating range.

Material: Titanium or PTFE-coated Steel
Agitation System
Ensures uniform electrolyte concentration and temperature by circulating the solution.

Material: PP or PVDF
Exhaust System
Removes fumes generated during the anodizing process.
Drain Valve
Allows quick draining of the electrolyte for maintenance.

Manufacturers of Anodizing Tank Module

Manufacturer profiles associated with Anodizing Tank Module.

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Frequently Asked Questions

What materials are used for the tank construction?

The tank can be made of polypropylene (PP) or fiberglass reinforced plastic (FRP), with stainless steel 316L and PVC also listed as materials on file. The choice depends on chemical resistance and structural strength requirements. For steel tanks, a PVC or PP lining is used for corrosion protection.

What is the typical working volume range?

The working volume ranges from 500 to 5000 liters, depending on production capacity. Larger volumes are used for higher throughput. The exact volume should be confirmed based on the specific production line requirements.

What standards are referenced for this product?

Standards referenced include ASTM B580 for anodizing, ASTM D4101 for polypropylene, and ASTM D3917 for fiberglass reinforced plastic. These are procurement references and do not guarantee compliance; verify with the manufacturer.

What is the recommended electrolyte temperature range?

The recommended electrolyte temperature range is 15–25 °C. Outside this range, coating quality may be affected: below 15 °C reduces coating thickness and hardness, while above 25 °C leads to porous coating and reduced corrosion resistance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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