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Salt spray testing provides a controlled accelerated corrosive environment to evaluate the relative corrosion resistance of the coating, substrate, or part itself. Parts or panels are placed inside a test chamber and exposed continually for a specified period of time, then evaluated for resistance to corrosion. This type of testing is also known as salt spray test.
most of corrosions about metal materials happen in the atmosphere. because there are a few corrosion factors like oxygen, humidity,temperature variation,pollutant existing in the atmosphere. It is exactly the interaction of these factors in atmosphere that produce atmospheric corrosion on metal casting.and salt-spray corrosion is one of common and destructive atmospheric corrosions.
The salt spray will corrode the metal composite of led street light housing. A corrosion-resistant led street light means it has better applicability in harsh atmospheric environments such as seaside and wharf.
the corrosion of alloy by salt spray is mainly caused by electrochemical reaction . after the conductive salt solution penetrate into the alloy which form of a micro battery system, reaction takes place. during the reaction, electrons transfer occurs, appears as a metal anode dissolve and then form a new compound-that' corrosion. chloridion plays a major role in salt spray corrosion. it has a strong penetrating ability and easily penetrate into metal oxide layer ,later enter into the metal, destroy the passive state of metals. at the same time, chloride ions have a very small hydration energy and are easy to be adsorbed on the metal surface, causing the metal to be destroyed.
To want to know the corrosion resistance of led street light, if you intend to test in a natural environment, the needed time of corrosion may take a year or even years. it is highly unrealistic. and it can't be accepted by most reaseachers and procurers who are eager to know the test outcome , especially when they are transforming their products or buying product. so it is a imperative to turn to another test approach-artificial simulation experiment.such experiments can produce similar results in days or even hours.
product conformity assessment is a control method, which is used by a country or area to ensure the quality and safety of products intend to flow here. it is also a product market admittance condition of some places .salt spray test qualified led street light mean a superhard quality assurance . especially in place where there are full of corrosion factors like seaside , wharf , chemical factory etc. the performance of these lights will be more durable than other regular street lights.
when considering special occasion project lighting product ， it is very easy to make mistakes if working based on chronic experience or trying to copy the previous project, a problem known in lighting implement project as "habitual thinking". this thinking is also common in other fields. to help battle that , before start up project, it is necessary to comprehensively analyze lighting fixture application environment and have all details in mind to ensure project's quality and durability.
The quality of your project has a great impact on your company's brand and reputation. so when you do decide to move forward, overall consideration will help you to make a wise decision on purchasing selection. to continue to see things through the eyes of your customer and to treat everything in a long view ,you will earn more than you image . because intangible assets like goodwill will aid you to attract more customers .
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