How to ensure your solar lights withstand any weather with a salt spray test

Salt spray test is a clear and specific regulation of salt spray test conditions, such as temperature, humidity, sodium chloride solution concentration and pH value. In addition, it also puts forward technical requirements for the performance of salt spray test chamber. The purpose of salt spray test is to assess the salt spray corrosion resistance quality of products or metal materials, and the judgment of salt spray test results is the judgment of product quality. Whether its judgment results are correct and reasonable is the key to correctly measure the salt spray corrosion resistance quality of products or metals. The judgment methods of salt spray test results include rating judgment method, weighing judgment method, corrosion occurrence judgment method and corrosion data statistical analysis method.

Salt spray test rating method:
1. The rating judgment method divides the percentage of the ratio of corrosion area to total area into several levels according to a certain method, and takes a certain level as the basis for qualification judgment, which is suitable for the evaluation of flat plate samples.
2. The weighing judgment method evaluates the corrosion resistance quality of samples by calculating the weight (or weight gain) of corrosion loss through the weight change of samples before and after corrosion test. It is suitable for evaluating the corrosion resistance quality of a certain metal.
3. The method of determining the presence of corrosive substances is a qualitative method, which judges the samples based on whether the products have corrosion after the salt spray corrosion test. This method is mostly used in general product standards.
4. The statistical analysis method of corrosion data is mainly used to analyze and count corrosion conditions, rather than specifically used for the quality judgment of a specific product.

The artificial simulated salt spray environment test is to use a test equipment “salt spray test chamber” with a certain volume space, and use artificial methods to create a salt spray environment in its volume space to assess the quality of salt spray corrosion resistance of products. Compared with the natural environment, the salt concentration of chloride in the salt spray environment can be several times or dozens of times of the salt spray content in the general natural environment, which greatly improves the corrosion rate. The time to obtain the results of salt spray test on products is also greatly shortened.

The artificial salt spray test also includes:neutral salt spray test, acetate spray test, copper salt accelerated acetate spray test and alternating salt spray test.
1. Neutral salt spray test (NSS test) is an accelerated corrosion test method that appeared first and is currently the most widely used in the field. It uses 5% sodium chloride saline solution, and the pH value of the solution is adjusted to the neutral range (6 ~ 7) as the solution for spray. The test temperature is 35 ℃, and the sedimentation rate of salt spray is required to be 1 ~ 2ml/80cm ². H.

2. Acetate spray test (ASS test) is developed on the basis of neutral salt spray test. It is to add some glacial acetic acid to the 5% sodium chloride solution, so that the pH value of the solution is reduced to about 3, and the solution becomes acidic. Finally, the salt mist formed is also changed from neutral salt mist to acidic. Its corrosion rate is about 3 times faster than that of NSS test.

3. Copper salt accelerated acetate spray test (CASS test) is a rapid salt spray corrosion test developed recently abroad. The test temperature is 50 ℃, and a small amount of copper salt copper chloride is added to the salt solution to strongly induce corrosion. Its corrosion rate is about 8 times that of NSS test.

4. The alternating salt spray test is a comprehensive salt spray test, which is actually a neutral salt spray test plus a constant damp heat test. It is mainly used for cavity type complete machine products. Through the penetration of the humid environment, salt spray corrosion occurs not only on the surface of the product, but also inside the product. It is to convert the product alternately under salt fog and humid and hot environmental conditions, and finally check whether the electrical and mechanical properties of the whole product have changed.

This artificial salt spray environment test ensures that the solar lights can withstand any weather, LISUN launched Salt Spray Test Chamber | Salt Fog Test | ASTM B117 Salt Spray ChamberSalt Spray Test Chamber is applicable to the salt spray corrosive test for the protection layer of components, parts, electronic and electrical parts and metal materials and industrial products. The salt fog test chamber meets the following standards: IEC60068-2-11 (GB/T2423.17), GB/T10125, GB/T1771, ISO9227, ASTM-B117, GB/T2423-18, QBT3826, QBT3827, IEC 60068-2-52, ASTM-B368, MIL-STD-202, EIA-364-26, GJB150, DIN50021-75, ISO3768, 3769, 3770; CNS 3627, 3885, 4159, 7669 etc.

YWX/Q-150X series Composite Salt Spray Test Machine fullly compliance with GB/T 2423. 18, GB/T-10125, IEC 60068-2-11, GMW 14872, TCSAE 71, VCS 1027_1449, PV 1210,etc standards requirements. It do measurement through simulating conditions that are more commonly encountered in the natural environment such as  salt spray, hot air drying, humidity, low temperature combined and loop in any order. It is widely used to test items used in drastically changing environments, such as automobile parts, aviation equipment, building materials, coating, electric and electrical machinery so on.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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