Sand Embedded in Castings
Sand inclusion defects occur when sand becomes embedded in the castings and creates rough or bare spots on the surface of the galvanized steel. Sand inclusions are not removed by conventional acid pickling, therefore abrasive cleaning should be done before the products are sent to the galvanizer. This type of defect leaves bare spots and must be cleaned and repaired, or the part must be rejected, stripped, and regalvanized. Sand embedded in a casting is shown to the left.
© 2020 American Galvanizers Association. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel. This material provides general information only and is not intended as a substitute for competent professional examination and verification as to suitability and applicability. The information provided herein is not intended as a representation or warranty on the part of the AGA. Anyone making use of this information assumes all liability arising from such use.