Failure Analysis of Water Pump Shaft

2010 ◽  
Vol 10 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Wali Muhammad ◽  
Kashif Mairaj Deen
Keyword(s):  
Failure Analysis ◽  
Water Pump ◽  
Pump Shaft

scholarly journals Failure Analysis of Shaft Circulating Water Pump (CWP) used in Power Plant

2018 ◽  
Vol 159 ◽  
pp. 02027 ◽  
Author(s):  
Abdul Hamid ◽  
Sri Nugroho ◽  
Gunawan Dwi Haryadi ◽  
Khaeroman
Keyword(s):  
Stainless Steel ◽  
Chemical Composition ◽  
Power Plant ◽  
Failure Analysis ◽  
Fatigue Cracking ◽  
Hardness Test ◽  
Water Pump ◽  
Circulating Water ◽  
Pump Shaft ◽  
Sem Test

Pump shafts are generally exposed to the liquid being pumped either on a continual basis or at certain locations along the length of the shaft. The shaft material is austenitic stainless steel, description ASTM AU 79 TY 316. The purpose of this study is to determine the failure of the water pump shaft used in the power plant. Metallography is the study of structure metal shaft can used as a means for CWP metal pelleting (Circulating Water Pump), for the purpose of damaged or deeply degraded areas. SEM test is used to know the beginning of the crack (crack initiation). EDS test is used to chemical composition and Vikers hardness test is also used to know the hardness material. These three tests to support in analyzing the failure of the pump shaft. The conclusion of this failure analysis is the shaft material has porosity. Fatigue cracking comes from the outer surface area.

scholarly journals Failure Analysis Of Water Pump Shaft

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Didik Ariwibowo
Keyword(s):  
Tensile Stress ◽  
Failure Analysis ◽  
Ultimate Strength ◽  
Raw Material ◽  
Water Pump ◽  
Foreign Material ◽  
Material Identification ◽  
Pump Shaft ◽  
Strength Material ◽  
The Difference

Abstract- A water pump shaft for utility water raw material was failed. The shaft was broken into two parts. While in dismantling, the sand was found in chamber between bearing and shaft. There was also a bolt in the impeller. According to reports, the pump has been repaired and since there was no replacement shaft but the shaft was reused in reverse position. There was no inspection of the shaft when it was disconnected by operational reasons. The failure analysis of the broken-shaft was performed to investigate the cause of the failure. Two inspection and analysis were perfomed those are visual inspection and material identification and analysis. When material analysis of the shaft was carried out there was difference between examination and data specification of the shaft.The material identification indicate that the material was AISI SS 304 whereas specification data states SS 316. Both materials have similar tensile stress, so the difference was not the contributor of the failure. The present of foreign material was consider as the cause of the failure. The foreign material caused to stucked on rotation of shaft and increasing in tensile of the shaft over its ultimate strength. Keywords – vertical pump, tensile stress, ultimate strength, material identification  

scholarly journals Failure analysis of automobile engine pump shaft bearing

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110094
Author(s):  
Hao Guo ◽  
Haitao Duan ◽  
Jianzhong Lei ◽  
Dongfeng Wang ◽  
Sanming Du ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Fatigue Failure ◽  
Wear Behavior ◽  
Failure Mechanisms ◽  
Bearing Failure ◽  
Water Pump ◽  
Prevention Measures ◽  
Surface Fatigue ◽  
Pump Shaft ◽  
Abnormal Operation

The shaft bearing is the key component of water pump and its fatigue failure results in the abnormal operation of the system. However, the failure mechanisms of bearing are still unclear. In this paper, the failure analysis on the engine water pump shaft bearing was carried out by using the measurement of material composition and properties, observation of macro and micro morphologies, and theoretical analysis of fatigue failure. The wear behavior and failure mechanisms were clarified, and the prevention measures was further proposed. The bearing failure reflected from the fracture of bearing cage and serious wear of roller and mandrel. The wear behavior of the mandrel originated from the surface fatigue, and the failure was attributed to the large radial deflection load. Further, the decreased weight of impeller and shaft connector and the increased bearing thickness were recommended to improve the bearing operation.

МODERNIZATION TECHNOLOGY REPAIRING ACENTRIFUGAL WATER PUMP

2018 ◽  
pp. 48-51
Author(s):  
Sh.U. Yuldashev ◽  
D.T. Abdumuminova
Keyword(s):  
Production Process ◽  
Technological Process ◽  
Energy Efficient ◽  
Technical Support ◽  
Ultrasonic Processing ◽  
Water Pump ◽  
The Real ◽  
Technological Processes ◽  
Efficient Management ◽  
Pump Shaft

The article provides an overview of the principle of the pump D630-90, as well as methods for studying the real conditions of technical support to improve maintainability and optimize technological processes and systems. A technological process for the restoration of the shaft of a centrifugal water pump has been developed and an algorithm for managing it has been proposed, on the basis of which the system for energy-efficient management of the recovery area has been implemented. Also in the article some questions of use, metal-filled compound SK812, and also application of ultrasonic processing of a surface of a shaft of the centrifugal water pump of mark D630-90 are mentioned and considered. The developed technological process of pump shaft restoration showed that it is characterized by simplicity, it fits well into the production process of repair and can be widely used in repair shops.

Metallurgical failure analysis of a BWR recirculation pump shaft

2000 ◽  
Vol 7 (5) ◽  
pp. 333-346 ◽  
Author(s):  
A.M Lancha ◽  
J Lapeña ◽  
M Serrano ◽  
I Gorrochategui
Keyword(s):  
Failure Analysis ◽  
Pump Shaft

Failure analysis of large, low head water pump units

2016 ◽  
pp. 525-529
Author(s):  
Baoyun Qiu ◽  
Jinyu Cao ◽  
Yizhou Yang
Keyword(s):  
Failure Analysis ◽  
Water Pump ◽  
Low Head

Failure analysis of a condensate pump shaft

2001 ◽  
pp. 425-441
Author(s):  
A.M. Lancha ◽  
M. Serrano ◽  
D. Gómez Briceño
Keyword(s):  
Failure Analysis ◽  
Condensate Pump ◽  
Pump Shaft

Metallurgical failure analysis of a domestic water pump impeller

1994 ◽  
Vol 1 (1) ◽  
pp. 29-34
Author(s):  
Edward V. Bravenec ◽  
J. Edgar Zapata
Keyword(s):  
Failure Analysis ◽  
Water Pump ◽  
Domestic Water ◽  
Pump Impeller

Failure analysis of a river water circulating pump shaft from a NPP

2001 ◽  
Vol 8 (3) ◽  
pp. 271-291 ◽  
Author(s):  
A.M Lancha ◽  
M Serrano ◽  
J Lapeña ◽  
D Gómez-Briceño
Keyword(s):  
Failure Analysis ◽  
River Water ◽  
Pump Shaft

Experimental Investigation of Flow Induced Rotor Oscillations in a Centrifugal Sewage Water Pump

Volume 3 ◽  
2004 ◽  
Author(s):  
Friedrich-Karl Benra ◽  
Hans Josef Dohmen ◽  
Oliver Schneider
Keyword(s):  
Experimental Investigation ◽  
Static Pressure ◽  
Pressure Field ◽  
Pressure Fluctuations ◽  
Sewage Water ◽  
Water Pump ◽  
Flow Rates ◽  
Pump Rotor ◽  
Pump Shaft ◽  
Impeller Geometry

Most of the pumps for sewage transport have a special impeller geometry in order to avoid operational disturbances by clogging. The almost exclusively used single stage machines particularly are equipped with single-blade impellers. With this impeller geometry a strongly uneven pressure field along the perimeter of the pump casing can be expected. The resulting periodically unsteady flow forces affect the impeller and produce strong radial deflections of the pump shaft. In this contribution the experimental investigation of the dynamic behavior of the pump rotor as a consequence of the transient hydrodynamic forces is described. To verify the calculated rotor oscillations measurements were performed at several rotating speeds and at different volume flow rates. The pump which before has been investigated numerical was equipped with several sensors. The deflections of the pump rotor were measured with two proximity sensors. The measurement of the vibration accelerations at the pump casing showed the effects of the transient hydrodynamic stimulation forces. Measurements of the static pressure in the casing allowed a correlation between the rotor oscillations and the pressure fluctuations produced by the single-blade impeller.

Sign in / Sign up

Export Citation Format

Share Document