Influence of Adhesive Bonded Surface Texture on Adhesive Bonding Process
Journal Title: RECENT - Year 2009, Vol 10, Issue 27
Abstract
Laboratory experiments deal with an influence of a grit-blasting by means of corundum grits AL2O3 of different sizes on a surface roughness of steel substrates prepared according to the standard CSN EN 1465. The experiments considered not only the grain size of a grit-blasted medium (F14, F24, F40, F80 and F100) but also the grit specific size of a main fraction specified by the standard FEPA "F" 42-D-86 which can cause a relief irregularity of the grit-blasted surface, influence the roughness and consequently the adhesive bond strength. Two parameters of the surface texture set by the standard CSN EN ISO 4287 were evaluated: Ra, Rz and their mutual relation Ra/Rz. The results showed that the percentage of the grit specific size stated by the standard is the lowest at the grain size F80 (56.5% of measured grits) and the highest at the grain size F24 (77% of measured grits). Further, a significant falling course of the roughness parameters values with the increasing grain size of the grit-blasted medium was found out. The grit-blasting by means of the artificial corundum of the grain size F24 was chosen as the most suitable adhesive bonded steel substrate surface treatment.
Authors and Affiliations
Miroslav MÜLLER, Jan KRMELA, Juraj RUŽBARSKÝ
Keywords
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