Introduction to Salt Spray Test of Metal Shelf
2021-09-25

Introduction to Salt Spray Test of Metal Shelf
Salt spray test is an environmental test that mainly uses artificially simulated salt spray environmental conditions created by salt spray test equipment to assess the corrosion resistance of products or metal (such as metal shelf) materials. It is divided into two categories, one is the natural environment exposure test, and the other is the artificial accelerated simulated salt spray environment test.
The artificial simulated salt spray environment test is to use a kind of test equipment with a certain volume space-the salt spray test box, in its volume space, artificial methods are used to create a salt spray environment to assess the quality of the salt spray corrosion resistance of the product . Compared with the natural environment, the salt concentration of chloride in the salt spray environment can be several or tens of times the salt spray content of the general natural environment, which greatly increases the corrosion rate. The salt spray test of the product is carried out and the result is obtained The time is also greatly shortened. For example, if a product sample is tested in a natural exposure environment, it may take 1 year for its corrosion, while the test under artificial salt spray environment conditions requires only 24 to 72 hours to obtain similar results.
The salt spray test standard is a clear and specific stipulation for the salt spray test conditions, such as temperature, humidity, sodium chloride solution concentration and pH value, etc., and also puts forward technical requirements for the performance of the salt spray test chamber. Which salt spray test standard is used for the same product should be selected according to the characteristics of the salt spray test, the corrosion rate of the metal, and the sensitivity to salt spray.
The purpose of the salt spray test of metal shelf is to assess the salt spray corrosion resistance of products or metal materials (iron, stainless steel, etc.), and the judgment of the salt spray test result is the judgment of the product quality, and whether the judgment result is correct and reasonable. It is the key to correctly measure the salt spray corrosion resistance of products or metals. The methods for judging the results of the salt spray test include: rating judging method, weighing judging method, corrosive appearance judging method, and corrosion data statistical analysis method.
The grading judgment method divides the percentage of the corrosion area to the total area into several levels according to a certain method, and a certain level is used as the basis for qualified judgment, which is suitable for evaluation of flat samples; the weighing judgment method is through the corrosion test before and after The method of weighing the weight of the sample to calculate the weight of the corrosion loss to evaluate the corrosion resistance quality of the sample. It is especially suitable for assessing the corrosion resistance quality of a certain metal; the corrosion appearance judgment method is a qualitative judgment It uses the salt spray corrosion test to determine whether the product has corrosion phenomena. This method is mostly used in general product standards; the statistical analysis method of corrosion data provides the confidence of designing the corrosion test, analyzing the corrosion data, and determining the corrosion data. It is mainly used to analyze and count the corrosion situation, rather than to determine the quality of a specific product.
In short, the salt spray test is an important means to assess the salt spray corrosion resistance of products or metal shelf materials, and the scientific and rationality of the test results is of utmost importance. There are many factors that affect the stability and consistency of the salt spray test results. To improve the effectiveness of the salt spray test results, test technology is the key. Therefore, the test personnel not only need to have solid professional knowledge and professional skills, but also need rich practical experience and a comprehensive understanding of the product, to understand the salt spray test from the chemical and environmental engineering, materials, structure and technology and other multidisciplinary fields, which is scientific and reasonable. Express the test results in a better way to provide effective information for product selection, structural design, process selection, product transportation, storage and use, and improve the salt spray corrosion resistance of products or materials.
Salt spray test is an environmental test that mainly uses artificially simulated salt spray environmental conditions created by salt spray test equipment to assess the corrosion resistance of products or metal (such as metal shelf) materials. It is divided into two categories, one is the natural environment exposure test, and the other is the artificial accelerated simulated salt spray environment test.
The artificial simulated salt spray environment test is to use a kind of test equipment with a certain volume space-the salt spray test box, in its volume space, artificial methods are used to create a salt spray environment to assess the quality of the salt spray corrosion resistance of the product . Compared with the natural environment, the salt concentration of chloride in the salt spray environment can be several or tens of times the salt spray content of the general natural environment, which greatly increases the corrosion rate. The salt spray test of the product is carried out and the result is obtained The time is also greatly shortened. For example, if a product sample is tested in a natural exposure environment, it may take 1 year for its corrosion, while the test under artificial salt spray environment conditions requires only 24 to 72 hours to obtain similar results.
The salt spray test standard is a clear and specific stipulation for the salt spray test conditions, such as temperature, humidity, sodium chloride solution concentration and pH value, etc., and also puts forward technical requirements for the performance of the salt spray test chamber. Which salt spray test standard is used for the same product should be selected according to the characteristics of the salt spray test, the corrosion rate of the metal, and the sensitivity to salt spray.
The purpose of the salt spray test of metal shelf is to assess the salt spray corrosion resistance of products or metal materials (iron, stainless steel, etc.), and the judgment of the salt spray test result is the judgment of the product quality, and whether the judgment result is correct and reasonable. It is the key to correctly measure the salt spray corrosion resistance of products or metals. The methods for judging the results of the salt spray test include: rating judging method, weighing judging method, corrosive appearance judging method, and corrosion data statistical analysis method.
The grading judgment method divides the percentage of the corrosion area to the total area into several levels according to a certain method, and a certain level is used as the basis for qualified judgment, which is suitable for evaluation of flat samples; the weighing judgment method is through the corrosion test before and after The method of weighing the weight of the sample to calculate the weight of the corrosion loss to evaluate the corrosion resistance quality of the sample. It is especially suitable for assessing the corrosion resistance quality of a certain metal; the corrosion appearance judgment method is a qualitative judgment It uses the salt spray corrosion test to determine whether the product has corrosion phenomena. This method is mostly used in general product standards; the statistical analysis method of corrosion data provides the confidence of designing the corrosion test, analyzing the corrosion data, and determining the corrosion data. It is mainly used to analyze and count the corrosion situation, rather than to determine the quality of a specific product.
In short, the salt spray test is an important means to assess the salt spray corrosion resistance of products or metal shelf materials, and the scientific and rationality of the test results is of utmost importance. There are many factors that affect the stability and consistency of the salt spray test results. To improve the effectiveness of the salt spray test results, test technology is the key. Therefore, the test personnel not only need to have solid professional knowledge and professional skills, but also need rich practical experience and a comprehensive understanding of the product, to understand the salt spray test from the chemical and environmental engineering, materials, structure and technology and other multidisciplinary fields, which is scientific and reasonable. Express the test results in a better way to provide effective information for product selection, structural design, process selection, product transportation, storage and use, and improve the salt spray corrosion resistance of products or materials.
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