The use of the product process, in order to verify the metal parts on the exposed zipper
hardware products will corrosion in the atmosphere or in other environments, the product can be placed in a long enough time in the use of the environment, such as a life cycle of products. This requires a convenient method to evaluate the corrosion resistance of the product.
Accelerated corrosion evaluation method of salt spray test is a kind of artificial atmosphere. It is saline aerosol concentration, and then sprayed on a box of Hengyuan closed, by observing the changes of the tested samples for a period of time in the case to reflect the corrosion resistance of the sample. It is a kind of accelerated test the method is, with a short time, not years, only a few days or even hours.
Although the salt fog test is an effective test method. But due to many factors affecting the corrosion, so the results of salt spray test do not directly guide the subjects in all environment corrosion properties of materials. However, salt spray test method can be used as a method of testing the test material.