Study on Screw-holding Ability of Three Screw Connections in Medium Density Fiberboard Components

Abstract

In this experiment, medium density fiberboard (MDF) was chosen as connection parts and orthogonal test method was used to study the influence of screw type, diameter of guide hole and screw penetration depth on screw-holding ability in MDF components. The results showed that the type of screw has no significant effect on the screw-holding ability, while the self-tapping screw with cross groove has the greatest effect, the diameter of the guide hole and the depth of the screw have significant effects on the strength of the screw-holding ability. Within a reasonable range, the larger the diameter of the guide hole and the deeper the screw penetration MDF has, the higher the anti-pulling force the screw get. In actual production, the strength of screw joint can be improved by increasing the diameter of guide hole and deepening the depth of screw properly.