Causes of gear tooth flank failure in a quarry excavator drive system

IF 0.9 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metallurgist Pub Date : 2026-04-23 DOI:10.1007/s11015-026-02091-x

B. S. Ermakov, O. V. Shvetsov, S. B. Ermakov, Y. S. Klochkov, S. A. Vologzhanina, A. M. Zolotov

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Abstract

The development of the oil and gas sector, as well as solid mineral mining enterprises, is now concentrated in the northernmost and most remote regions of the country. It is well-known that the service life of specific components and parts of excavators, bulldozers, and loaders decreases significantly in the Arctic and Subarctic regions of Russia. An analysis of damaged gear wheels removed from mining equipment operating in northern latitudes revealed that accelerated gear pair failure can be attributed to various external factors and product quality deficiencies. This study investigated how the chemical composition of tooth material and the segregation of impurity atoms at grain boundaries influence the resistance to metal fracture and the development of contact damage during long-term, low-temperature operation. The results demonstrate that tests determining the threshold stress intensity factor K₁_rth for sustained crack growth can be used to model the initiation and propagation of delayed quench cracks. These cracks occur along the boundaries of inherited austenite grains in the surface layers of driven gear teeth in traction transmission systems.

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采石场挖掘机传动系统齿轮齿面失效原因分析

石油和天然气部门以及固体矿物采矿企业的发展现在集中在该国最北部和最偏远的地区。众所周知，在俄罗斯的北极和亚北极地区，挖掘机、推土机和装载机的特定部件和部件的使用寿命明显下降。通过对在北纬地区作业的采矿设备中拆卸的损坏齿轮的分析，发现齿轮副加速失效可归因于各种外部因素和产品质量缺陷。本研究研究了在长期低温运行过程中，牙齿材料的化学成分和晶界处杂质原子的偏析如何影响其抗金属断裂和接触损伤的发展。结果表明，确定持续裂纹扩展的阈值应力强度因子K1rth的试验可以用来模拟延迟淬火裂纹的萌生和扩展。这些裂纹发生在牵引传动系统从动齿轮齿的表层继承奥氏体晶粒的边界上。

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来源期刊

Metallurgist 工程技术-冶金工程

CiteScore

1.50

自引率

44.40%

发文量

151

审稿时长

4-8 weeks

期刊介绍： Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).