Wet Abrasive Blasting: The Future of Surface Preparation and the Effects it Has on Steel

From JPCL, March 2020

By Joshua Bell and Casey McCartney, Tnemec Company, Inc.

With more stringent silica regulations being enforced in the coatings industry, the use of wet abrasive blasting is becoming more prevalent. The authors investigate the viability of wet abrasive blasting compared to dry abrasive blasting and explore the use of additives, in tandem with wet abrasive blasting standards, to remove soluble salts, inhibit flash rusting and avoid impacting the performance of applied coating systems....

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Comment from Michael Beitzel, (3/19/2020, 12:00 PM)

Interesting study and I agree that slurry abrasive blasting with additives provides more benefits than dry abrasive blasting. However to be fair I am not aware that it is standard practice to dry abrasive blast then to pressure wash. The pressure washing typically occurs prior to dry abrasive blasting and wonder what impact that may have had on the results. I would be curious to see the level of flash rusting of Group 11 without washing.

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