Failure of Height-adjustment Hydraulic System in a Dual-Drum Shearer and Surface Modifications on Key Parts
- DOI
- 10.2991/meic-15.2015.222How to use a DOI?
- Keywords
- Coal mining machine; Higher institutions; Hydraulic system; Component failure; Surface modification
- Abstract
In a dual-drum shearer, the drum's height is mainly adjusted by a height-adjustment hydraulic system. However, the hydraulic system is prone to failures, since oil is likely to leak induced by the abrasions of key parts. In the present work, based on the analysis of system failures and the requirements on material performances, the surface modification methods used for the key parts in height-adjustment hydraulic system were proposed. Specifically, the TiN film was deposited on the surface of the oil distribution disk, the diamond-like carbon (DLC) film was deposited on the surface of the cylinder by means of ion implantation and the ion cladding was performed on the surface of the plunger piston. Compared with the original base material, the material after processed is significantly enhanced in terms of surface performances. The results also indicate that, after modified, the parts' surface performances were greatly improved and now can satisfy the demands under harsh operating conditions. Accordingly, the failure rate of the hydraulic system can be reduced and the service period of the shearer can be prolonged.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Wen Shu AU - Xiang Yu AU - Lei Zhang PY - 2015/04 DA - 2015/04 TI - Failure of Height-adjustment Hydraulic System in a Dual-Drum Shearer and Surface Modifications on Key Parts BT - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering PB - Atlantis Press SP - 972 EP - 976 SN - 2352-5401 UR - https://doi.org/10.2991/meic-15.2015.222 DO - 10.2991/meic-15.2015.222 ID - Shu2015/04 ER -