Authors: D.S. Gromyka, K.V. Gogolinskiy, E.A. Kremcheev

Title of the article: Thermal fatigue modelling of excavator teeth during cyclic heat loading

Year: 2021, Issue: 2, Pages: 23-29

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 620.169.1

DOI: 10.26730/1816-4528-2021-2-23-29

Abstract: During mining, as well as in other types of work, excavator buckets are exposed to abrasive wear which leads to the operating tools resource loss. In lignite deposits subjected to spontaneous combustion such duties as mining, dumping and reclamation are often complicated by the increased coal temperature. Such conditions significantly accelerate the loss of residual resource, since the cyclic high temperature loads of bucket surface and teeth lead to thermal fatigue and the formation of fatigue microcracks. This paper presents the results of computer modeling of the process of cyclic heating of a bucket tooth in order to predict thermal fatigue properties to predict the resource loss of an excavator bucket under the described conditions.

Key words: wear thermal fatigue excavator mathematical modelling bucket operating tools

Receiving date: 15.02.2021

Publication date: 29.04.2021

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