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Comprehensive Guide to Salt Spray Test Chamber Standards and Safety Measures
From: BONAD  Date: 2024-11-08 16:48:22

Introduction:

Salt spray testing is a crucial environmental test that assesses the corrosion resistance of products or metal materials by simulating a salt spray environment. This guide delves into the standards for salt spray test chambers and outlines essential safety precautions to ensure secure operation.

Salt Spray Test Chamber: Testing Standards

The salt spray test is divided into two primary categories: natural environmental exposure tests and artificial accelerated simulated salt spray environment tests. The latter is conducted using a salt spray test chamber, which creates a controlled salt spray environment within a specific volume to evaluate the product's resistance to corrosion.

In artificially simulated environments, the salt concentration can be significantly higher than in natural settings, accelerating the corrosion process and reducing testing time. While natural exposure tests might take up to a year, similar results can be achieved in just 24 hours using a salt spray test chamber.

Corrosion primarily occurs in atmospheric environments due to factors like oxygen, humidity, temperature fluctuations, and pollutants. Salt spray corrosion, a common and destructive form of atmospheric corrosion, is mainly caused by chloride salts from marine and inland saline-alkaline areas. When chloride ions penetrate the metal's oxide layer and protective coating, they initiate electrochemical reactions with the underlying metal. Additionally, chloride ions have hydration energy that allows them to easily adsorb into pores and cracks on the metal surface, displacing oxygen in the oxide layer and transforming insoluble oxides into soluble chlorides, thus exacerbating surface corrosion.

Salt Spray Corrosion Test Chamber

Safety Precautions for Salt Spray Chambers

Ensuring safety during the operation of salt spray chambers is paramount. Here are some key safety measures:

1. Grounding: The outer shell of the salt spray chamber must be grounded to prevent electric shock risks in case of leakage during testing.

2. Reliable Installation: Ensure proper installation before operating the equipment and avoid testing before confirming secure installation.

3. External Power Supply: Use an external power supply as the control power source for heated samples instead of directly using the machines power supply.

4. Electrical Cabinet Safety: Only qualified professionals should open the electrical cabinet cover to avoid injury from dangerous currents.

5. Avoid Touching Moving Parts: Do not touch parts temporarily at rest while the machine is running to prevent injury from sudden activation.

6. Prohibition of Movement: Do not move the salt spray test chamber while samples are inside to prevent sample reversal or dropping.

7. Horizontal Installation: Install the salt spray chamber horizontally to avoid alarms or unstable controls.

8. Secure Fixing: Ensure that the salt spray chamber is securely fixed with adjusted feet before use to prevent accidental movement when subjected to external forces.

9. Read the Manual: Carefully read the safety requirements in the manual and safety signs on the equipment before use to understand correct operating procedures and precautions.

Conclusion:

Adhering to these safety precautions can effectively ensure safe operation of salt spray chambers, protecting both users and equipment from potential hazards.

 
 
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