Analysis on the Corrosion Failure of MDS Mine Multistage Centrifugal Pump Impeller

Abstract:

This paper carried out composition test, metallurgical analysis and water samples test of work environment for the centrifugal pump impeller material which experiences corrosion failure. Then combined with the scanning electron microscope and spectroscopy analysis of the fracture morphology, it conducted XRF analysis for the corrosion material to study the unsuccessful corrosion of MDS multistage centrifugal pump impeller in coal mine well water with alkalescence. The researches show that washout of solid - liquid composite phase leads to the serious erosion of pump impeller. The turbulence corrosion and cavitation are the main reasons which cause unsuccessful corrosion of this pump, while the organization defections such as dendritic graphite and binary phosphorus eutectic are important factors that lead to the severe local corrosion of impeller. Moreover, the corresponding prevention measures are proposed.

• Periodical: Advanced Materials Research (Volume 650)
• Pages: 344-349
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.650.344
• Online since: January 2013
• Authors: Xiang Zhang, Wen Ming You, Yi Jun Zhou, Yong Sheng Li, Sheng Jie Qiu
• Keywords: Centrifugal Pump, Erosion, Failure, Graphite, Impeller

References

[1] .

[8] Zi Sun, Li Jiang, Zhanpeng Ying: Failure Analysis-basic and application, edited by China Machine Press, Beijing(2005), p.261, 264.

[2] Yugui Zhen, Ziming Yao, Wei Ke: Research achievements in erosion corrosion, J. Materials Science and Engineering . 3 (1992) p.21.

[3] Ihn J B, Chang F K. Smart patches for monitoring crack growth in aircraft structure, Research. AIAA-2002-1544. (2002).

[4] Xiaogang Xu, Failure analysis of the impellers of sea water pumps of stainless steel and solution, J. Journal of Lanzhou Petrochemical College of Vocational Technology . 3 (2008) p.18.

[5] Dechi Peng, Liangwang Yu, The analysis and method to prevent corrosion on water pump impeller, J. Water & Wastewater Engineering . 6 (2007) p.99.

[6] Andrew R, Ian W E, Leo M. Environmental durability trial of bonded composite repairs to metallic aircraft structure, Research. ADA449404，(2005).

[7] Qiong Wu, Xiurong Zhang, Effect of cavitation on centrifugal pump performance, J. Brand & Standardization. 10 (2009) p.33.

[9] Yongshu Tian, RongPu Liu, An analysis of the causes of corrosion for water pumps in a chemical plant, J. Corrosion & Protection. 1 (2002) p.34.

[10] Yong Wang, Houling Liu, Minggao Tan, Research situation and prospect of cavitation on water pump, J. Pump Technology. 1 (2008) p.2, 3.