Salt spray test machine operation of the test sample placement principle

The salt spray tester is mainly used to evaluate the salt spray corrosion resistance of the sample material and its protective layer, plating layer and the like, and the comparison of the process quality between similar protective layers. The principle of placing the tested items in the salt spray test machine is as follows:

1. The test sample is placed in the salt spray test machine with the test surface facing up, so that the salt spray generated by the salt spray tester can be freely settled and deposited on the test surface of the sample, and the salt spray cannot be directly sprayed onto the test surface of the sample. on.

2. The test sample should be laid flat under normal circumstances. In the salt spray test chamber, the test surface of the sample should be 15°~30° from the vertical direction. For irregular samples (such as the whole workpiece), it should be as close as possible to the above requirements.

3. The test samples can be placed on different horizontal surfaces in the salt spray test cabinet, but they must not touch the cabinet or touch each other. The distance between the test samples shall not affect the free fall of the salt spray on the test surface, and the droplets of salt spray accumulated on the test sample shall not drip onto other test samples.

4. The sample holder is made of material resistant to salt spray and acid-base corrosion such as glass or plastic. If the sample is to be hung on the support, the material of the suspended sample cannot be made of metal. Generally, cotton fiber and man-made fiber are used. Or other non-metallic materials such as insulating materials.

盐雾测试机操作之被测试样的摆放原则

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