Influence of mounting on hanging bolt lifetime

Abstract

Abstract The main objective of this article is analysis of the hanging bolt failure that forms part of the weight transfer device. The base material of this bolt was protected by a surface layer to prevent corrosive influence of the environment. This bolt was used in combination with another screw of the same type to fix the movement of the device in the horizontal direction. This device operates by means of a hydraulic circuit at the rear of the agricultural machine and performs a vertical axis movement. The fracture surfaces of the bolt failure were evaluated on a thermo-emission scanning electron microscope. In the next part of the experiment, the micro-purity and microstructure of the material of the damaged hanging bolt was evaluated by optical microscopy. The main benefit of this article is the study of hanging bolt failure depending on the mounting design condition and from the way of its loading. Knowledge from this research is important to ensure safety with handling and protecting heavy loads from damage.