When it comes to salt spray test, it has to be related to salt spray test chamber.
Salt spray test is carried out in salt spray test chamber. It is generally used to test the corrosion resistance of metal or the corrosion resistance of metal surface after electroplating. It can Corrosion tests can be carried out by spraying corrosive salt solutions, and tests can also be carried out by corrosive gases. Different corrosion methods can be adopted according to the specific use environment.
When doing a salt spray test, there is basically a set of test standards and test ratings. The corrosion status of the salt spray test is mainly determined by four methods, the rating determination method, the weighing determination method, the corrosion product appearance determination method and the corrosion data statistical analysis method.
The corrosion data statistical analysis method provides methods for designing corrosion tests, analyzing corrosion data, and determining the confidence level of corrosion data. It is mainly used to analyze and count corrosion situations, rather than specifically used to determine the quality of a specific product.
The salt spray test standards are divided into ten levels, which are based on enterprise test standards and are consistent with actual conditions.
Level 10: No defective area, appearance rating A, no change in the surface appearance of the sample;
Level 9: The defect area does not exceed 0.1%, the appearance rating is B, and there is slight to moderate discoloration on the surface of the sample;
Level 8: The defect area accounts for 0.1% to 0.25%, the appearance rating is C, the surface of the sample is severely discolored or has very slight corrosion;
Level 7: The defect area accounts for 0.25% to 0.5%, the appearance rating is D, the surface of the sample is severely tarnished and very slight corrosion products appear;
Level 6: The defect area accounts for 0.5% to 1.0%, the appearance rating is E, the surface of the sample is severely lost, or there is a thin layer of corrosion products or pitting corrosion on the partial surface of the sample;
Level 5: The defect area accounts for 1.0% to 2.5%, the appearance rating is F, there are corrosion products or pitting corrosion on the surface of the sample, and one of them is distributed on the entire sample surface;
Level 4: The defect area accounts for 2.5% to 5%, the appearance rating is G, and there is a thick layer of corrosion products or pitting corrosion on the surface of the sample;
Level 3: The defect area accounts for 5% to 10%, the appearance rating is H, there is a very thick corrosion product layer or pitting corrosion on the surface of the sample, and there is deep pitting corrosion;
Level 2: The defect area accounts for 10% to 25%, the appearance rating is I, and the sample has corrosion of the base metal;
Level 1: The defect area accounts for 25% to 50%, which is a serious corrosion phenomenon.
BOTO GROUP is manufacturer of environmental test chambers with over 20 years of experience.
Focusing on the production of various environmental testing equipment, the product series include: temperature test chamber, aging test chamber, salt spray test chamber,mechanical testing machine, etc.
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