The compound salt spray test chamber is a comprehensive environmental test instrument integrating salt spray, damp heat, drying and circulation. Compared with the traditional salt spray test chamber, the effects of cyclical corrosion such as salt spray, drying and moist heat on the product. More realistic, because the products are transported, stored and used in a dry and wet environment, so the accelerated corrosion test machine should be more realistic to simulate this environment, and foreign research also shows: cyclic corrosion relative to corrosion rate, structure The shape is very close to outdoor corrosion, and has excellent correlation with outdoor corrosion, and is included in the common test category. More and more experiments in the automotive industry require multi-step polymerization to combine salt spray, dryness and wet heat. Get up and loop. The compound salt spray test chamber breaks through the function of the traditional salt spray box. In addition to the function of the normal salt spray test chamber, it also combines the functions of alternating (circulating) salt spray test to provide tests such as infatuation corrosion and filamentous corrosion. The environment, a true reproduction of the ocean climate environment simulation.
The compound salt spray test chamber produced by Lin Frequency Instrument has the humidity control ability, mainly for the salt spray wet heat alternating test, and also has the drying function, which is widely used and recognized in many automobile industry and auto parts enterprises. The compound salt spray test chamber is one of the test equipments for “anti-humidity, anti-salt spray and anti-mold†in artificial climate environment. It is an important test equipment for studying the environmental adaptability and reliability of automobiles and their parts. Performance indicators meet the test criteria for neutral salt spray tests and acetate spray tests. The cyclic corrosion of the composite salt spray test chamber is very close to the outdoor corrosion relative to the corrosion rate, structure and shape, and has excellent correlation with outdoor corrosion. It has been included in the test field, and more and more industries have to go to the test. The multi-step process combines salt spray, drying, and moist heat. Ordinary salt spray test chambers can only be subjected to fixed value tests, while composite salt spray test chambers can be used for cyclic tests.
With the long-term use of the car, the car's service life and mileage continue to increase, which will bring some corrosion to some key components of the car itself. The more common ones are the cab, the big car, the passenger car shell. , car floor, fenders, front (fenders, masks, etc., these parts are often in contact with water, gravel, etc. in the car, there will be continuous sand or stone impact during the driving process of the car The protective layer on the surface of the car can easily cause damage to the paint layer of the car, causing the metal to be exposed. When these metals react with water or oxygen in the air, they will cause rust, which is what we often call rust.
The test method of the composite salt spray test chamber includes the test cycle exposure to acid salt spray, drying conditions and wet conditions. The test method is mainly used for comparative tests. The test results do not represent the final corrosion resistance of the metal under the actual working environment. Sexuality, however, for the salt contamination of materials exposed to similar test conditions, the relative corrosion resistance of acid rain environments. Corrosion of metal materials, with or without corrosion protection, is affected by many environmental factors, and the impact process depends on the type of metal material and The type of environment, because it is impossible to design an accelerated corrosion test containing all environmental factors affecting corrosion resistance in the laboratory, laboratory tests are used to simulate the effects of several major environmental factors on the corrosion of metallic materials. Corrosion may be promoted under outdoor climatic conditions of acid rain and salt pollution. The accelerated corrosion test method mentioned in the relevant standards is to simulate and accelerate the influence of this environment on the corrosion of metal materials. Therefore, for this phenomenon, compound salt spray The test box was also born and was obtained in the automotive industry. Often a wide range of applications.
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