Salt spray test

Salt spray test is an environmental test that mainly uses artificial simulated salt spray environmental conditions created by salt spray testing equipment to evaluate the corrosion resistance of products or metal materials. Xunke Standard can conduct salt spray tests on a variety of polymer materials, metal materials, etc., and can issue nationally recognized test reports. Laboratory simulated salt spray tests can be divided into four categories: neutral salt spray test, acetate salt spray test, copper salt accelerated acetate salt spray test, and alternating salt spray test.
The neutral salt spray test (test) is the earliest accelerated corrosion test method that has the widest application fields. It uses % sodium chloride salt water solution, and the H value of the solution is adjusted to the neutral range (~) as the solution for spraying. The test temperature is all taken as ℃, and the sedimentation rate of salt spray is required to be between ~m/mh.
The acetate salt spray test (test) is developed on the basis of the neutral salt spray test. It is to add some glacial acetic acid to % sodium chloride solution to reduce the H value of the solution to about 10%, the solution becomes acidic, and the final salt spray formed also changes from neutral salt spray to acidic. Its corrosion rate is about three times faster than the test.
The copper salt accelerated acetate salt spray test (test) is a rapid salt spray corrosion test recently developed abroad. The test temperature is ℃, and a small amount of copper salt copper chloride is added to the salt solution to strongly induce corrosion. Its corrosion rate is approximately three times that of the test.
The alternating salt spray test is a comprehensive salt spray test. It is actually a neutral salt spray test plus a constant humidity and heat test. It is mainly used for cavity-type complete machine products. Through the penetration of the moist environment, salt spray corrosion occurs not only on the surface of the product, but also inside the product. It alternately converts the product under two environmental conditions: salt spray and humid heat, and finally assesses whether there are any changes in the electrical and mechanical properties of the complete product.
Salt spray test judgment method: Usually visual inspection before and after the test or the use of a low-magnification optical microscope is used to judge the lighter the degree of rust, the stronger the corrosion resistance of the product. During the test, temperature, salt spray concentration, humidity/salt spray cycle, and test duration will be used as severity levels. The above article content is only a partial list. If you have any questions, please feel free to call us. Phone