OUR LABORATORY IS EQUIPPED WITH VARIOUS EQUIPMENT AND CAN MEET VARIOUS REQUIREMENTS OF CHEMICAL ANALYSIS AND METALLOGRAPHIC ANALYSIS.
FOR THE SELECTED INSTRUMENT, WE ILLUSTRATE THE FEATURES IN DETAIL, THE OPERABLE FUNCTIONALITY AND ANALYSIS, IN COLLABORATION WITH Tecnologie Superficiali Srl.
SALT FOG SPRAY
What is salt fog spray and what does it do?
The salt spray test is a standardized test that allows us to check the resistance of a material and the effectiveness of organic and inorganic surface coatings in protecting the substrate against corrosion. The test, useful for comparing and qualitatively evaluating materials and coatings products with technologies, different levels of thickness and porosities, is often used to verify that a product conforms to certain quality specifications or simply to gather information on its corrosion resistance in this type of environment.
Our chemical laboratory is equipped with a Erichsen Corrotherm 610 salt fog spray.
What can we analyse at Metalcoating?
- Salt spray fog and static humidity tests
- Qualitative analysis and by means of comparative tests
- Standardised tests such as DIN 50021, DIN 50017, DIN EN ISO 7253, ISO 7253, ISO 11503, ASTM B 117, ASTM B 368 T, ISO 9227
- Quality control of the coatings in terms of resistance to corrosion
- Evaluating the effectiveness of a coating for the purposes of protection
- Evaluation of products particularly sensitive to corrosion
- In accordance with the rules of DIV, ISO, ASTM, BS, JIS, IEC, MIL-STD
Principle of operation
The metals are constantly exposed to corrosive agents such as moisture, acids, caustic solutions, gases and other contaminants that can determine a more or less rapid corrosion over time. The resulting deterioration and loss of desired characteristics has led to the use of treatments and coatings for protection purposes. Therefore, the choice of the correct combination between the base material and the type of coating to be applied is fundamental.
Corrosion and resistance are therefore a valuable and essential method, both as rapid quality control of materials and as a testing technique for products which are particularly sensitive to corrosion.
The test consists in placing the samples in a suitable chamber within which a saline test solution (5% NaCl) is nebulised at a temperature of 35°C. The mist produced allows you to recreate a highly corrosive environment.
At the end of the test the degree of corrosion of the sample is evaluated and documented. Intermediate checks can be useful to check the state of corrosion progress throughout the duration of the test.
We are able to provide an assessment of the degree of corrosion of your samples over time ranging from a 10 rating, for samples resistant to saline mist, to a 1 rating for highly sensitive samples which undergo a marked and evident deterioration
You can manage and edit all of the room functions, such as:
– conditions for salt and static humidity test,
– abatement of the fog, running temperature,
– nozzle spray air pressure,
– test duration
Duration of the salt spray fog test
The duration of the test in saline fog depends on the time necessary for it to trigger the corrosive phenomenon, and is therefore closely related to the type of material or coating and can vary from a few hours to thousands of hours. Often the required minimum duration is imposed by specific product or suggested by the historical results available.