Have you ever encountered this situation? The metal components of the lighting fixtures you bought start to show signs of corrosion on the surface after a period of use. This precisely indicates that the quality of such lighting products is not up to standard. If you’re curious about the reason behind this, then today we’re going to reveal that it’s all closely related to “salt spray testing”!
What is Salt Spray Test?
Salt Spray Test is an environmental test used to evaluate the corrosion resistance of products or metal materials. It simulates a salt spray environment to assess the durability of materials under such conditions and evaluate their performance and longevity in corrosive environments.
Experimental Classification:
1. Neutral Salt Spray (NSS)
Neutral Salt Spray Test is the earliest and most widely used accelerated corrosion test method. Generally, it uses a 5% sodium chloride salt water solution with a pH value adjusted to neutral range (6.5-7.2) for spray use. The test temperature is maintained at 35°C, and the salt fog deposition rate is required to be between 1-3 ml/80cm²·h, typically 1-2 ml/80cm²·h.
2. Acetic Acid Salt Spray (AASS)
Acetic Acid Salt Spray Test developed from the Neutral Salt Spray Test. It involves adding glacial acetic acid to a 5% sodium chloride solution, lowering the pH to around 3, making the solution acidic, and consequently transforming the salt fog from neutral to acidic. Its corrosion rate is about three times faster than NSS testing.
3. Copper Accelerated Acetic Acid Salt Spray (CASS)
Copper Accelerated Acetic Acid Salt Spray Test is a recently developed rapid salt spray corrosion test abroad. The test temperature is 50°C, with a small amount of copper salt (copper chloride) added to the salt solution, which greatly accelerates corrosion. Its corrosion rate is approximately 8 times faster than NSS testing.
4. Alternating Salt Spray (ASS)
Alternating Salt Spray Test is a comprehensive salt spray test that combines neutral salt spray with constant humidity exposure. It is primarily used for cavity-type whole-machine products, inducing salt spray corrosion not only on the product surface but also internally through the permeation of humid conditions. Products undergo alternating cycles between salt fog and humidity, assessing changes in electrical and mechanical performance of whole-machine products.
Are Liper’s lighting products also salt spray tested?
The answer is Yes! Liper’s metal materials for lamps and luminaires are manufactured according to international standards. Based on the IEC60068-2-52 standard, they undergo an accelerated corrosion test involving continuous spray testing for 12 hours (for iron plating). After the test, our metal materials must show no signs of oxidation or rust. Only then can Liper’s lighting products be tested and qualified.
We hope this article helps our customers understand the importance of salt spray testing. When selecting lighting products, it is crucial to choose high-quality options. At Liper, our products undergo rigorous testing, including salt spray tests, lifespan tests, waterproof tests, and integrating sphere tests, etc.
These thorough quality checks ensure that Liper’s customers receive high-quality, reliable lighting products, thereby enhancing our client’s quality of life and overall satisfaction.
As a professional lighting manufacturer, Liper is extremely meticulous in material selection, allowing you to choose and use our products with confidence.
Post time: Jul-19-2024
