Large-Scale Composite Salt Spray Test Chamber

The Large-Scale Composite Salt Spray Test Chamber is a professional environmental simulation instrument designed to replicate complex corrosion conditions, including high-salt, high-humidity, and temperature-humidity cycles. You can use it to test full vehicles, large components, or batch samples for corrosion resistance, providing reliable data for product development, quality control, and durability verification in automotive, aerospace, and defense industries.

Applications

1. Automotive Industry

Testing the corrosion resistance of complete vehicles, bodies, chassis, and new energy vehicle battery packs in coastal and frigid regions is a critical validation step for export model development.

2. Aerospace and Defense

Evaluating the reliability of aircraft components and military equipment under high salt fog and extreme temperature/humidity conditions ensures service life.

3. Large Structural Components

Simulating harsh environments like chemical plants and marine atmospheres to validate long-term corrosion resistance for items such as corrosion-resistant pipelines, photovoltaic modules, and ship components.

Standards

GMW 14872 Simulating the Corrosion Resistance of Automotive Components in Alternating Salt Spray, Humidity, and Dry Environments

GJB 150.11A Salt Spray Testing for Military Equipment

GB/T 10125-2021 Artificial Atmosphere Corrosion Testing—Salt Spray Test

ASTM B117 Simulating Complex Corrosion Environments (Marine, Chemical, etc.) to Evaluate Material or Coating Corrosion Resistance

ISO 9227:2022 Corrosion tests under artificial climatic conditions—Salt spray test

ASTM G85 Standard Test Method for Modified Salt Spray Test

GB/T 2423.17 Salt spray test for electrical and electronic products

GB/T 2423.18 Combined salt spray test

Features

1. Composite Environmental Simulation

Integrates multiple environmental stresses including salt spray (neutral NSS, acetic acid AASS, copper-accelerated CASS modes), temperature-humidity cycling (-40°C to 150°C, humidity 30% to 98% RH), and drying/condensation cycles. Simulates real-world corrosion scenarios such as marine atmospheres and industrial pollution zones.

2. Large-Scale Testing Capacity

Chamber dimensions typically range from 10–18m (L) × 3–5m (W) × 3–4m (H), accommodating large components like complete vehicles, body-in-white, and battery packs. Supports walk-through or lift platform designs for easy sample loading/unloading.

3. High-Precision Control and Intelligent Operation

Salt deposition is precisely controlled at 1–2 mL/80 cm²/h, with temperature fluctuations ≤±0.5°C and humidity deviation ≤±5% RH.

Equipped with a touchscreen programmable system supporting multi-mode cyclic testing (e.g., salt spray-damp heat-dry cycles), delivering high automation.

4. Corrosion-Resistant Structural Design

Interior walls utilize corrosion-resistant materials like PVC, FRP, or PP. Exterior shells are constructed from stainless steel or carbon steel with anti-corrosion coatings. Select models feature double-walled insulation to minimize heat loss.

Parameters

Accessories

Touchscreen programmable control panel

Salt spray generator and dosing system

Temperature and humidity sensors

Automated data logging and monitoring software

Sample racks, lifting platforms, and access doors

Test Procedures

1. Equipment Preparation

Verify chamber structural integrity and safety interlocks.

Check water supply, salt solution concentration, and salt spray generator operation.

Arrange samples securely on racks or lifting platforms.

2. Parameter Configuration

Select the desired salt spray mode (NSS/ASS/CASS).

Set temperature and humidity ranges, along with cycle duration.

Activate automated monitoring and data acquisition.

3. Test Execution

Start the chamber and monitor temperature, humidity, and salt spray deposition rates.

Perform cyclic testing according to programmed schedules.

Ensure safety alarms are active throughout the test.

4. Test Completion

Gradually return chamber to ambient conditions.

Remove samples carefully and analyze corrosion performance data.

FAQ

1. What types of samples can be tested?

You can test full vehicles, vehicle bodies, battery packs, pipelines, photovoltaic modules, aircraft components, and other large-scale structures requiring corrosion evaluation.

2. How is the salt spray deposition rate controlled?

The chamber digitally controls the deposition rate at 1–2 mL/80 cm²/h, automatically adjusting for uniformity according to the selected test mode.

3. Can it perform multi-environment cyclic testing?

Yes, you can program alternating cycles of salt spray, high/low temperature, humidity, and drying/condensation sequences.

4. What safety features are included?

Over-temperature protection, low water alarm, leakage protection, and programmable alarms for abnormal operating conditions.

5. How large of a component can be tested?

Chambers are typically 10–18 m long, 3–5 m wide, and 3–4 m high, accommodating full-size vehicles or large structural components.

6. Can the chamber simulate coastal and industrial environments?

Yes, by combining NSS/ASS/CASS salt spray modes with temperature-humidity cycles, it replicates real-world marine, industrial, and polluted atmospheric conditions.