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摘要
The paper presents a methodology applied in testing the wear behaviour of selected iron alloys used for the components of pumps handling brine from mine workings. The complexity of phenomena occurring during actual flow of the brine through a pump justifies the need to build a laboratory test stand equipped with the model pump, imitating the conditions of industrial operation. In model pump, in which a jet of brine containing different concentrations of Cl ions and particulates is flowing, the surface degradation of samples corresponding to the degradation of industrial pump components takes place.
The programme of research aimed at the determination of corrosive-erosive wear behaviour of Cr-Ni cast steels (18Cr-9Ni, 19Cr-11Ni-2Mo, F-A (24-27%Cr-5-6%Ni-2.5-2.8%Mo) and cast irons of Zl250 and ZsCu1.0 grade. The measure of wear was the loss of weight and changes in surface condition determined by scanning electron microscope (SEM) equipped with energy dispersive X-ray analyser (EDS) manufactured by EDAX company.
Among the examined materials, the best wear resistance (the lowest wear rate) was observed in ferritic-austenitic (F-A) cast steel (24-27%Cr-5-6%Ni-2.5-2.8%Mo).
- 出版日期2010
