You are purchasing a downloadable pdf of this Standard. This specification defines the requirements for selecting and evaluating mineral and slag abrasives . 6 Feb JETMAG® abrasive was analyzed in accordance with the required qualification tests of. SSPC-AB 1 for specific gravity, hardness, weight. 15 Feb Mineral and Slag Abrasives (Abrasive Specification No. 1).
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I do not think anyone can confidently quantify abrasive contamination transfer to a surface during abrasive blast cleaning, as there are too many variables to consider. Although it may not be required by the specification, it is good practice to first conduct a test panel sspc ab 1 confirm the planned method of surface preparation will meet the specification.
AB 1, Mineral and Slag Abrasives
December 27, at 8: That is, abrasive cleanliness is an indirect requirement. Which abrasive cleanliness standard should be used?
December 29, at 5: The surface of the water is then visually examined for any oil droplets or sheen. How can I tell if the abrasive is contaminated?
Ssc my name, email, and website in this browser for the next time I comment. It is important that the conductivity meter compensate for temperature and sspc ab 1 the probe is verified for accuracy using a controlled solution with a known conductivity value prior to sspc ab 1. Water soluble salts transferred to the surface can cause accelerated rust back, osmotic blistering, under-film corrosion, and premature coating failure.
SSPC-AB 4 requires more frequent testing including at least three water-soluble contaminants tests at different times during an 8-hour period. The degree of embedment from abrasive blast cleaning operations can sspc ab 1 widely even within a generic category of abrasive. This could cause widespread failures and become very expensive to repair. I agree that continued monitoring is highly recommended, especially with recyclable materials, since localized surface contaminants can become widespread when entered into the abrasive blasting media.
AB 1, Mineral and Slag Abrasives
Selection of the type and size abrasive is dependent on the degree of cleanliness specified, the depth of the surface profile, the type of sspc ab 1 to be sspf, sspc ab 1 any specification requirements regarding type e. The abrasive blast cleaning standards swpc composed of both direct and indirect requirements.
March 3, at This test should be conducted at least once per shift during blast cleaning operations and at least 3 tests per shipment of bulk delivery.
June 16, sspc ab 1 7: We never had a big problem. At least from our experiences. April 5, at 3: The cleanliness of the abrasive whether new or recycled is equally important. This field test takes equal parts abrasive sspc ab 1 deionized water mL of each that are combined and are twice stirred for 1-minute with an 8-minute standing time between stirs to leach any soluble salts from the abrasive.
Thank you for the question. If dust sspc ab 1 on the surface or water remains cloudy, the overall cleanliness of the abrasive should be questioned as this could cause impede production. Leave a Reply Cancel reply Your email address will not be published. Recyclable Encapsulated Abrasive Media Each standard has different requirements based on the type of media but are identical when it comes to the quality control tests for oil content and water-soluble contaminants.
This field test, commonly known as the vial test, requires that a sample of abrasive be placed in a clean, sealable container. An excerpt from one of the SSPC abrasive blast cleaning standards addressing abrasive cleanliness is shown below: Without routine monitoring of abrasive cleanliness, these contaminants could go unnoticed.
SSPC-AB 1, Mineral and Slag Abrasives
If oil is visually evident, the abrasive fails the test. This test also reveals sspc ab 1 the abrasive is excessively dirty. Abrasive selection is a key component to an abrasive blast system. March 7, at 9: Abrasive blast cleaning is the most common and sspc ab 1 form of surface preparation. It was removed from the test method in the revision as it does create confusion as you mentioned.
There are several indirect requirements, including: Each standard has different requirements based on the type of media but are identical when it comes to the quality control tests for oil content and water-soluble contaminants.
The slurry is then poured through filter paper to prevent silt from fouling the probe and conductivity of the filtered extract is measured. This includes personalizing content and advertising.
This allows the contractor, inspector, and owner to identify any potential issues with the method before it becomes sspc ab 1 larger, more costly problem.