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Why do salt spray test?
In order to verify whether the metal parts on the product will corrode when exposed to the atmosphere or other environments, the product can be placed in the use environment for a long enough time, such as a life cycle of the product. This is time-consuming and labor-intensive, in practice It is rarely used.
This requires a convenient method to evaluate the corrosion resistance of the product.
The salt spray test is an accelerated anti-corrosion evaluation method of artificial atmosphere. It is to atomize a certain concentration of salt water, and then spray it in a closed constant temperature box, by observing the change of the tested sample after being placed in the box for a period of time. Reflects the corrosion resistance of the tested sample. It is an accelerated test method, that is, it takes a short time and does not require a few years, but only a few days or even a few hours.
Although the salt spray test is an effective test method. However, due to the many factors that affect corrosion, a single salt spray resistance cannot be used as a representative of the performance of other media, so the salt spray test result cannot be used as the test material to resist in all environments. A direct guide to corrosion performance. At the same time, the performance of the material in the test cannot be used as a direct guide to the corrosion resistance in use.
Nevertheless, the salt spray test method can still be used as a method for testing the tested material.