Salt spray test chamber is used to determine the corrosion resistance of the surface of metal or some galvanic materials and evaluate the corrosion resistance of the metal or galvanic surface according to the results of the salt spray test chamber test. The salt spray test examines the corrosion resistance of the test material by observing the corrosion of the test object. There are currently three types of brine used in salt spray testing: neutral brine, acetate solution, and copper-accelerated acetic acid solution.
The salt spray test chamber is used for testing the corrosion resistance and film thickness of some metals, alloys, metal coating, oxide coating, organic coating, paint, varnish, etc. When operating the salt spray test chamber, the temperature in the chamber and the temperature of the pressure drum can be adjusted to the test requirements via the temperature controller on the salt spray test chamberearth. In addition, the salt spray test cabinet can also be used for noxious gas tests. Such a salt spray test cabinet is referred to as a sulfur dioxide corrosion test cabinet.
Temperature error is a comprehensive temperature performance index that includes: temperature control instrument setpoint and actual temperature deviation in the box, temperature variation, temperature uniformity, and other items. Please describe the salt spray test box for you below The adjustment method of the deviation between the instrument setting value and the actual temperature in the box: There are two temperature control instruments in the salt spray test box, one controls the air temperature in the box, and the other controls the water temperature in the filler. The settings of these two temperature control devices have a great influence on the temperature error.
For temperature control in the box, the temperature sensors are located close to the box wall andnd there is a distance from the geometric center of the box, so the temperature measured by the temperature sensor has a difference from the temperature at the geometric center of the box. The larger the volume, the larger the difference. In order to eliminate the influence of this deviation on the temperature control of the box, this deviation should be found and corrected before the formal test so that the measured temperature is close to the temperature of the center of the box.