The salt spray test chamber utilizes a salty solution or an acidic salty solution to accelerate the corrosion of materials or products under the environment of a certain temperature and relative humidity to reproduce the degree of damage suffered by the materials or products within a certain time range. The equipment can be used to evaluate the ability of materials and their protective layers to resist salt spray corrosion, and to compare the process quality of similar protective layers. It can also be used to evaluate the ability of some products to resist salt spray corrosion. The method of placing test samples during the salt spray test chamber test
The equipment can reach any temperature point from normal temperature to 55 ℃ in the test work space, and keep it constant. The salt spray corrosion test shall be carried out on the materials or products under the conditions of constant volume and constant temperature and relative humidity. When the salt spray test box is used for experiment, how can the test sample be placed in the box to make the test more perfect? ​​The test sample placement method:
1. The sample is placed in the salt spray test chamber with the test surface facing up, allowing the salt spray to settle freely on the surface of the test. The surface of the test cannot be directly sprayed by the salt spray.
2. The sample should be flat in principle. In the salt spray test chamber, the surface to be tested is 15 degrees to 30 degrees from the vertical direction, and as far as possible 20 degrees. For irregular samples (such as the entire workpiece), it should also be as close as possible to the above regulations.
3. The sample can be placed on different horizontal surfaces in the box, but it must not touch the box or contact each other. The distance between the samples should not affect the free fall of the salt spray on the surface of the test, and the droplets on the sample should not fall on other samples. For new inspections or tests with a total test period exceeding 96h, the sample may be allowed to shift.
4. The sample holder can be made of glass, plastic and other materials. The material for hanging the sample cannot be metal, but artificial fiber, cotton fiber or other insulating materials.
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