Metallographic Analysis of Stainless Steel Inner Shaft of Centrifugal Pump

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F20%3APU133712" target="_blank" >RIV/00216305:26620/20:PU133712 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.scientific.net/DDF.405.223" target="_blank" >https://www.scientific.net/DDF.405.223</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.405.223" target="_blank" >10.4028/www.scientific.net/DDF.405.223</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Metallographic Analysis of Stainless Steel Inner Shaft of Centrifugal Pump

Popis výsledku v původním jazyce

The paper focuses on the metallographic analysis of the damaged inner shaft of a centrifugal pump with magnetic clutch. Pumps driven via a magnetic clutch are widely used in industry for the pumping of dangerous and highly explosive liquids. In pumps with a magnetic clutch the possibility of the liquid entering into the electric drive is excluded. The magnetic clutch transfers rotation from the drive through an air gap from the driving half-clutch to the driven half [1, 2]. In this case, the damaged part of centrifugal pump (Fig. 1) was made of stainless steel and transmitted power from the magnetic clutch to the impeller of the pump. The pump was overhauled by the Manufacturer after ten years of routine work. Slightly worn parts of the pump including inner stainless steel shaft were replaced by the Manufacturer according to the preserved documentation. The overhauled pump failed after two days of running in the original conditions. This failure was solved by an analysis of three used inner shafts, namely the slightly worn original and two damaged replacements. This work was carried out via microstructure analysis, fracture analysis, hardness measurements, and chemical composition analysis.

Název v anglickém jazyce

Metallographic Analysis of Stainless Steel Inner Shaft of Centrifugal Pump

Popis výsledku anglicky

The paper focuses on the metallographic analysis of the damaged inner shaft of a centrifugal pump with magnetic clutch. Pumps driven via a magnetic clutch are widely used in industry for the pumping of dangerous and highly explosive liquids. In pumps with a magnetic clutch the possibility of the liquid entering into the electric drive is excluded. The magnetic clutch transfers rotation from the drive through an air gap from the driving half-clutch to the driven half [1, 2]. In this case, the damaged part of centrifugal pump (Fig. 1) was made of stainless steel and transmitted power from the magnetic clutch to the impeller of the pump. The pump was overhauled by the Manufacturer after ten years of routine work. Slightly worn parts of the pump including inner stainless steel shaft were replaced by the Manufacturer according to the preserved documentation. The overhauled pump failed after two days of running in the original conditions. This failure was solved by an analysis of three used inner shafts, namely the slightly worn original and two damaged replacements. This work was carried out via microstructure analysis, fracture analysis, hardness measurements, and chemical composition analysis.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Metallography & Fractography 2019

ISBN

—

ISSN

1662-9507

e-ISSN

—

Počet stran výsledku

6

Strana od-do

223-228

Název nakladatele

Trans Tech Publications Ltd

Místo vydání

Switzerland

Místo konání akce

Nový Smokovec

Datum konání akce

24. 4. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—