A salt spray can test is as well as known as corrosion study and is performed not far-off off from metal products. This test estimates the resistance of surface coating adjoining the corrosion initiating conditions. In a bland salt spray can can can can test, the specimen is exposed to the saline fog for a specific duration and subsequently the test cycle is completed, the specimen is analysed visually. There are standards defined by relative authorities to put it on the test step by step. ASTM B117 is followed that has defined all the conditions and precautions to be taken even though performing arts this test.
Test Procedure
To perform the test, first of all, a standardised salt spray chamber is required.
To begin the test, place the sample in the chamber by rubbing off every one pension of the contaminants bearing in mind dust or grease from the specimen surface.
The angle of placement should be 20 and the should be kept away from the chamber walls. Close the canopy of the chamber and set the era epoch.
Do you know about SPRAY COATING?
The duration of the test can produce an effect the merged of 24, taking into consideration, 24 hours, 48 hours, 72 hours and consequently concerning.
Many machines are equipped taking into consideration HMI panel or assume screen panel to find the share for in the profile programming.
Once the exam is hermetically sealed, the specimen is taken out and analysed visually.
If the specimen does not achievement any traces of rust it passed the exam, else it is unsuccessful.
Precautions to be Taken
The temperature of the chamber should be approx. 37C.
The level of fog that is to be maintained is 5ml.
During the exam, the canopy should not be opened. It disturbs the exam conditions that are maintained inside the chamber.
It is enormously important that the exam should rule non-halt. Therefore, it is enormously vital to have a water reservoir.
The sample should not be placed enormously muggy to the walls, it may outcome in uneven drying to fog.
Importance of Corrosion Testing
In metal industries, this exam serves alternating purposes. Some industries attempt to examine the behaviour of their product in concrete effective conditions, even though some attempt to estimate the shelf cartoon of their product. There is one enthralling analysis and that is a desire of salt spray vigor. It can be defined as the number of hours a specimen can withstand without developing the corrosion. In many industries, it is used as the parameter to regard as physical the regression in the production process. Over the period, due to wear and tear of the robot or back the age of the robot the production process starts to produce loopholes which might not profit recognised unless tested. The atmosphere of the coating starts to lower by mistake. This degradation can be sure by salt spray chemical analysis. If a coated product used to have a salt spray energy of 96 hours but now it has started to fail at 84 hours, this means the coating process needs reconsideration.
It is an internal way of air up mood standards. The manufacturer must consistently adhere to these standards to focus uphill-feel products. Salty fog breakdown is considered an important parameter in the metal industry. It not unaccompanied tests the sustainability of the coated surface but also determines the definite-time behaviour of the product.
There is always a misconception accompanied by the manufacturers and they attempt to relate the salt spray cartoon when legitimate cartoon. But this is not the goal of the test. Because in genuine liveliness conditions, there is a periodic cycle of wet and teetotal comings and goings. However, in simulated tested conditions, there are constant wet conditions. Understanding the right determination of this test is totally important as a upshot that right scrutiny determination can be served.
Test Procedure
To perform the test, first of all, a standardised salt spray chamber is required.
To begin the test, place the sample in the chamber by rubbing off every one pension of the contaminants bearing in mind dust or grease from the specimen surface.
The angle of placement should be 20 and the should be kept away from the chamber walls. Close the canopy of the chamber and set the era epoch.
Do you know about SPRAY COATING?
The duration of the test can produce an effect the merged of 24, taking into consideration, 24 hours, 48 hours, 72 hours and consequently concerning.
Many machines are equipped taking into consideration HMI panel or assume screen panel to find the share for in the profile programming.
Once the exam is hermetically sealed, the specimen is taken out and analysed visually.
If the specimen does not achievement any traces of rust it passed the exam, else it is unsuccessful.
Precautions to be Taken
The temperature of the chamber should be approx. 37C.
The level of fog that is to be maintained is 5ml.
During the exam, the canopy should not be opened. It disturbs the exam conditions that are maintained inside the chamber.
It is enormously important that the exam should rule non-halt. Therefore, it is enormously vital to have a water reservoir.
The sample should not be placed enormously muggy to the walls, it may outcome in uneven drying to fog.
Importance of Corrosion Testing
In metal industries, this exam serves alternating purposes. Some industries attempt to examine the behaviour of their product in concrete effective conditions, even though some attempt to estimate the shelf cartoon of their product. There is one enthralling analysis and that is a desire of salt spray vigor. It can be defined as the number of hours a specimen can withstand without developing the corrosion. In many industries, it is used as the parameter to regard as physical the regression in the production process. Over the period, due to wear and tear of the robot or back the age of the robot the production process starts to produce loopholes which might not profit recognised unless tested. The atmosphere of the coating starts to lower by mistake. This degradation can be sure by salt spray chemical analysis. If a coated product used to have a salt spray energy of 96 hours but now it has started to fail at 84 hours, this means the coating process needs reconsideration.
It is an internal way of air up mood standards. The manufacturer must consistently adhere to these standards to focus uphill-feel products. Salty fog breakdown is considered an important parameter in the metal industry. It not unaccompanied tests the sustainability of the coated surface but also determines the definite-time behaviour of the product.
There is always a misconception accompanied by the manufacturers and they attempt to relate the salt spray cartoon when legitimate cartoon. But this is not the goal of the test. Because in genuine liveliness conditions, there is a periodic cycle of wet and teetotal comings and goings. However, in simulated tested conditions, there are constant wet conditions. Understanding the right determination of this test is totally important as a upshot that right scrutiny determination can be served.
No comments:
Post a Comment