2012Shanxi Electric PowerRequires access

Fracture Analysis of the Water Pump Shaft

Xiaojie Wang

Open publisher page 1 citations

Abstract

A water pump shaft broke after it had been under service for only 8 months.According to a series of test analysis such as chemical constituents,mechanical properties,metallographic structure,macrofractography and scanning electron microscopy,it was concluded that the fracture was caused by large clearance between impeller and pump shaft,so that the circumferential stress at key slot increased and fatigue source formed.Primarily,circle fatigue developed into chipping,and then developed into radial rotating and bending before fracture finally occurred.

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What this paper is about

A water pump shaft broke after it had been under service for only 8 months.According to a series of test analysis such as chemical constituents,mechanical properties,metallographic structure,macrofractography and scanning electron microscopy,it was concluded that the fracture was caused by large clearance between impeller and pump shaft,so that the circumferential stress at key slot increased and fatigue source formed.Primarily,circle fatigue developed into chipping,and then developed into radial rotating and bending before fracture finally occurred.

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Available abstract

A water pump shaft broke after it had been under service for only 8 months.According to a series of test analysis such as chemical constituents,mechanical properties,metallographic structure,macrofractography and scanning electron microscopy,it was concluded that the fracture was caused by large clearance between impeller and pump shaft,so that the circumferential stress at key slot increased and fatigue source formed.Primarily,circle fatigue developed into chipping,and then developed into radial rotating and bending before fracture finally occurred.

Key concepts: Fracture (geology), Impeller, Materials science, Bending, Structural engineering, Scanning electron microscope, Metallurgy, Composite material

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