Search for the product you are looking for
研发中心

News

Slide down

Do You Understand How a Salt Spray Test Chamber Works Before Using It?

Source:LINPIN Time:2025-04-09 Category:Industry News

A salt spray test chamber is an accelerated corrosion environmental testing device. The primary causes of metal corrosion include oxygen, salt particles, pollutants in the air, as well as changes in temperature and humidity. Without proper protection, metal products exposed to long-term use will eventually corrode, affecting both their appearance and functionality. Therefore, salt spray testing is essential before manufacturing metal products to determine material selection and protective measures.

If relying solely on natural atmospheric conditions, such testing would require significant time, labor, and financial resources. Salt spray test chambers reduce these costs by conducting efficient accelerated testing. So, how do they simulate atmospheric conditions for salt spray testing? Let’s delve into the working principle.

salt spray test chamber

To accelerate corrosion, the salt solution concentration used in salt spray test chambers is typically several times or even dozens of times higher than that found in the natural atmosphere. The prepared solution is added to the chamber, and compressed air is delivered to a nozzle. Under pressure, the saline solution is ejected as a fine mist of tiny salt droplets, which are evenly sprayed onto the test specimens. Continuous spraying for 24 to 72 hours leads to the formation of corrosion spots. To speed up the test, the solution concentration and spray volume can be increased.

The later corrosion spots appear, the better the material’s corrosion resistance; conversely, earlier corrosion indicates weaker resistance.

Salt spray corrosion testing is essentially a chemical reaction process. Chloride ions in the salt solution penetrate the metal’s oxide layer, disrupting its stability. These ions continuously adhere to the metal surface, causing persistent damage.

While the principle of a salt spray test chamber is relatively simple, corrosion in natural environments is ever-present, making this test indispensable for product quality control across many industries. Understanding how the device works allows companies to adjust the equipment and test solutions according to their specific product requirements.

News Recommendation
In the field of quality inspection and reliability testing, constant temperature and humidity test chambers and high and low temperature test chambers are two commonly used environmental simulation devices, each with unique functions and application scenarios.
The constant temperature and humidity test chamber, also known as a constant temperature and humidity tester, constant temperature and humidity experimental box, constant temperature machine, or constant temperature and humidity box, is a device used to test the performance of materials under various environmental conditions and to evaluate their resistance to heat, cold, dryness, and humidity.
A constant temperature and humidity test chamber is a device that can accurately simulate specific temperature and humidity environments. It is widely used in many fields such as electronics, automotive, aerospace, and biopharmaceuticals.
Most temperature cycling test chambers on the market feature an inner chamber made of stainless steel. However, after prolonged use, rust may still appear on the equipment. Why does this happen, and are there effective ways to prevent it?
With the continuous tightening of ingress-protection requirements in automotive electronics, low-voltage power distribution and photovoltaic industries, repeatable, quantifiable and traceable artificial-rain testing has replaced the traditional “splash-and-inspect” approach and become the core means of verifying sealing performance.
Product Recommendation
Telegram WhatsApp Facebook VK LinkedIn