Influence of operational factors on the durability and performance of excavator bucket teeth

Abstract

The influence of operational factors on the durability and service life of excavator bucket teeth has been observed. The main mechanisms of wear of the material were analyzed, their occur rence depending on the type of soil and the power of the material of the teeth was established. A tho rough characterization of the steels to be prepared for their preparation has been made. Particular respect is given to the behavior of steel 110G13L. It has been shown that in important minds and robots, the austenitic structure of this steel ensures high wear resistance, while purely abrasive wear reduces its effectiveness. Thermal engineering modeling of the heating of the working surface of the tooth was carried out, meaning the limiting heat transfer and critical temperature of 300 °C, which, if overextended, would lead to the formation of carbides and loss of plasticity of the material. The sur face is primed to control the surface temperature.