The salt spray (or salt fog) test is a standardized and popular corrosion test method, used to ASTM B was the first internationally recognized salt spray standard, originally published in Other important relevant standards are. Designation: B – 07a Standard Practice for Operating Salt Spray (Fog) Apparatus1 This standard is issued under the?xed designation B. ASTM B Testing, also known as a Standard Practice for Operating Salt ASTM B Testing requires controls over many operational parameters such as: .
|Published (Last):||21 August 2007|
|PDF File Size:||9.98 Mb|
|ePub File Size:||9.26 Mb|
|Price:||Free* [*Free Regsitration Required]|
Careful attention should be given to the chemical content of the salt.
The second climate cycle comprises 0. This does not apply to running tap water.
When the pH of the salt solution is adjusted to 6. ASTM does not address this issue, but ISO does not recommend it and if it is to be done, advocates a thorough cleaning. ISO gives the guidelines for proper measurement of corrosion resistance for hot-dip galvanized specimens.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM-B STANDARD PRACTICE FOR OPERATING SALT SPRAY (FOG) APPARATUS_百度文库
The temperature within the exposure zone of the closed cabinet shall be recorded Note 8 at least once daily except on Saturdays, Sundays, and holidays when the salt spray test is not interrupted for exposing, rearranging, or removing test specimens or to check and replenish the solution in the reservoir NOTE 8—A suitable method to record the temperature is by a continuous recording device or by a thermometer which can be read from outside the closed cabinet. It is generally desirable to control the temperature of the surroundings of the salt spray chamber and to maintain it as stable as possible.
Bare metal shall not be used. This produces a corrosive environment of dense salt water fog also referred to as a mist or spray in the chamber, so that test samples exposed to this environment are subjected to severely corrosive conditions.
Salt spray test – Wikipedia
Before the solution is atomized it shall be free of suspended solids Note 4. However, in order to obtain reliable results additional requirements must be met. Test, Measure and Control.
This may be done monthly or more frequently to ensure consistent operation over time. Retrieved from ” https: Each set point and its tolerance represents an operational control point for equilibrium conditions at a single location in the cabinet which may not necessarily represent the uniformity of conditions throughout the cabinet.
Please log in, in order to get access to prices, ordering and inquiry functions. Options for corrosion chambers. It is preferred that control panels be provided that bracket the expected test specimen performance. The recorded temperature must b1117-07a obtained with the salt spray chamber closed to avoid a false low reading because of wet-bulb effect when the chamber is open. After cleaning, weigh each panel on an analytical balance to the nearest 1.
Room air may be compressed, b1177-07a, humidi? The first prerequisite for your test chamber to operate properly is that it is regularly serviced and well maintained.
In contrast asrm the full plastic construction, the VLM test rooms consist of a combination of recyclable plastics and metal e.
Nozzles may be located at the ceiling, or 0. The test duration is variable.
Otherwise cleaned air may be introduced into the bottom of a tower? The fallout rate should be measured for 16 hours and it must range from 1. In this connection it is well to point out that Practice B is not applicable to the study or testing of decorative chromium plate nickel-chromium on steel or on zinc-base die castings or of cadmium plate on steel.
Asttm the panels in the proximity of the condensate collectors. aetm
If the salt used is of lower purity, then test for halides. Heating Blocks for Evaporators.