Selected aspects of the effect of mechanical treatment on surface roughness and adhesive joint strength of steel sheets

The study presents selected problems of the effect of mechanical treatment on surface roughness and adhesive properties as well as adhesive joint strength of steel sheets. In the experiments, the following treatments were applied: grinding, lapping and superfinishing, with variations of some technological machining parameters being taken into account. Based on the conducted experiments, it has been found that the technological parameters of mechanical treatment affect the surface roughness, adhesive properties and adhesive joint strength, depending on the treatment method and parameters applied. It has also been found that the mechanical surface pretreatments have positively affected the adhesive joint strength. The specimens subjected only to degreasing exhibit lower strength.