Corrosion is the destruction or deterioration of a material or its properties under the action of the environment. Most corrosion occurs in the atmospheric environment, which contains corrosive components and corrosion factors such as oxygen, humidity, temperature changes and pollutants. Salt spray corrosion is one of the most common and destructive atmospheric corrosion. Agricultural machinery bearings have special working environment and high humidity pollution, so the product requirements should have relatively high product corrosion resistance.

Salt spray test is a kind of environmental test that mainly uses the artificial comparative salt spray environmental conditions created by salt spray test equipment to assess the corrosion resistance of products or metal materials. It is divided into two categories, one is the natural environmental exposure test, the other is the artificial accelerated comparison salt spray environmental test. Artificial comparison salt spray environmental test is to use a test equipment with a certain volume space - salt spray test chamber, in its volume space with artificial methods to create a salt spray environment to assess the product's salt spray corrosion resistance quality.

The basic content of salt spray test is that at 35 degrees Celsius, 5% sodium chloride aqueous solution is sprayed in the test box, compared with the accelerated corrosion method of seawater environment, and the length of its resistance time determines the corrosion resistance. Compared with the natural environment, the salt concentration of chloride in the salt spray environment can be several times or dozens of times the salt spray content in the general natural environment, which greatly improves the corrosion rate, conducts salt spray test on the product, and greatly shortens the time to obtain the results. For example, if a product sample is tested in a natural exposure environment, it may take 1 year to corrod, and if it is tested under artificial comparative salt spray environmental conditions, similar results can be obtained in as long as 24 hours.

Our JB Bearings agricultural machinery hub unit bearing products can all pass the salt spray test. For customers to solve the problems encountered in the use of agricultural machinery bearings. Extended service life.