What are the types of salt spray test chambers?

2022-09-06 CHAMBER

What is salt spray test chamber?

The salt spray test chamber generally refers to the salt spray corrosion test chamber. Salt spray corrosion test chamber through the assessment of the material and its protective layer of salt spray corrosion ability, as well as a similar protective layer of the process quality comparison, while certain products can be assessed to resist salt spray corrosion ability.

Salt Spray Test Chamber

The product is suitable for parts, electronic components, metal materials, protective layer, and industrial products of salt spray corrosion test.

Salt spray corrosion test chamber is widely used in various industries, such as aerospace engineering, marine engineering, mechanical engineering, and so on.

It can be used to assess the corrosion resistance of metallic materials and coatings like stainless steel under high humidity conditions (up to 95% relative humidity) with salt particles and high pressure (up to 100 psi).


As a comprehensive testing system that includes an exposure chamber and data acquisition system, it can automatically control the temperature and humidity inside the exposure chamber during the experiment.

What are the types of salt spray test chambers?

The salt spray test can be divided into three categories:neutral salt spray test, acetate fog test, and copper salt accelerated acetate fog test. According to different corrosion mechanisms, there are various types of salt spray chambers.

1. Neutral Salt Spray Test

Neutral salt spray chamber simulation neutral salt spray test can be divided into two categories: open-air neutral salt spray chamber and closed-air neutral salt spray chamber. A neutral salt spray chamber is generally used for large-scale static tests and short-term dynamic tests; it is widely used in the shipbuilding industry for testing hulls and bulkheads.

2. Acetate Fog Test

Acetate fog chamber simulation acetate fog test can be divided into two categories: open-air acetate fog chamber and closed-air acetate fog chamber. Acetate fog chamber is generally used for small-scale static tests with long duration; it can be used for large-scale static tests as well as short-term dynamic tests if necessary conditions are met.

3. Copper Salt Accelerated Acetate Fog Test

Copper Salt Accelerated Acetate Fog Test is an accelerated method based on a neutral salt spray test, which introduces copper chloride (CuCl2) into the neutral salt solution as an accelerator agent. Under this condition, the corrosion rate will increase significantly compared with that in neutral salt spray test conditions.


Salt spray test chamber from the function is divided into several kinds?

The salt spray test chamber from the function is divided into an ordinary salt spray test chamber and a multifunctional type salt spray test chamber.

1. Ordinary salt spray test chamber: General use of the pure salt spray test room, mainly used for the testing of the corrosion resistance of metal products and other plastics, such as bearings, mechanical seals, electronic components, and other components.

2. Multifunctional type salt spray test chamber: The main purpose of this product is to simulate various environments to test various materials and products. In addition to corrosion resistance tests, it can also be used for aging simulation tests, heat aging tests, and so on.


How does a salt spray chamber work?

The salt atmosphere is generated via the atomizing nozzle, which uses compressed air to siphon the salt solution from the reservoir.

This is then sprayed into the chamber. The high-pressure spray atomizes the solution, creating tiny droplets that fill up the entire space, including all surfaces and crevices.

The salt spray chamber can be used for a variety of applications, but it’s most commonly used to test for corrosion resistance.

The chamber has an adjustable pressure range that allows for fine-tuning of testing conditions. The higher pressure ranges produce higher temperatures, which increase corrosion rates.

The salt spray chamber also provides an enclosed environment with low humidity, which reduces any other factors that might affect corrosion rates (such as atmospheric moisture or humidity).

Additionally, these chambers have been used for many years as a way to test the durability and longevity of materials in harsh environments such as marine environments or industrial settings where there are high levels of humidity and moisture present on a daily basis.


Is standard for salt spray test?

Salt spray test standards (1) Neutral salt spray test (NSS test) is one of the earliest and most widely used accelerated corrosion test methods.

It is also called the neutral salt fog test or neutral salt spray test, which is a method to evaluate the resistance of materials to corrosion under the action of seawater, seawater, or saline atmosphere.

This method was first proposed by Lloyd-Jones in 1836 and was improved by Bowden in 1956. In China, the first national standard GB/T 3047-1996 “Standard Method for Testing Resistance to Salt Spray” was released in 1996.

(2) Conventional salt spray test. This method is also called the conventional salt fog test or conventional salt spray test, which mainly exposes samples to a mixture of warm deionized water and sodium chloride solution at room temperature for specified time intervals.

The results obtained from this method are more practical than those obtained from NSS tests; however, the results are less accurate than those obtained from NSS tests because it does not use pure seawater but use tap water instead of tap water as its solvent liquid during exposure tests.


The Bottom Line

NOKI Salt Spray Testing Chamber is a portable, self-contained, and fully functional test chamber that can be used for the certification of products at any stage of their life cycle. It is an ideal solution for testing new products in an accelerated environment, as well as validating the performance of existing products under extreme conditions.

The NOKI Salt Spray Test Chamber is easy to use, requires minimal maintenance, and offers outstanding reproducibility of results.
NOKI salt spray test chamber has extensive experience in the instrumentation industry and is ready to help you with your test chamber needs. Visit our website today to get more information about our products and services.

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