End Ring

  • Thickness: a(b): 8~25mm

  • ID: on request

  • OD max 600 diameter
  • Diameter 300~340: middle size of traction motor for electric train

  • Diameter 400~600: big size of traction motor for high speed train, Cargo wagon and etc.

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  • End Ring
  • End Ring
  • End Ring
■ Overview

End ring is part of Squirrel-cage rotor which consists of laminated steel in the core with evenly spaced bars of copper (Guide bar) placed axially around the periphery, permanently shorted at the ends by the End Rings.

Wind electric motor and locomotive motor end ring
Motor rotor end ring of electric vehicle
End ring of motor train and High-Speed Train
Alloy end ring

Production Process
Billet→Cutting→pre-heating→Hot forging→Solution heat treatment→Pre-scalping→Cold forging(small size) or Cold rolling(big size)→Aging →Pre-scalping →External&Internal finishing by Endmill→Fine finishing

■ Specifications

Size
--Thickness: 8~25mm
--ID: on request
--OD:max 600 diameter
(Diameter 300~340: middle size of traction motor for electric train)
(Diameter 400~600: big size of traction motor for high speed train, Cargo wagon and etc.)

 

Mechanical properties
Tensile strength (Rm): Min 220MPa
Yield strength (Rel): Min 170MPa (when 0.2% relatively deformation)
Elongation (EA): Min 18%
Hardness (Min): 80HBW
Resistance(20°C): 0.0174-0.0177-4 Ω•cm

 

Max defect should be less than 2mm when inspected by ultrasonic
Forging as one without soldering

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