Manufacturing Record

Generator Guard Ring

A critical retaining ring for pumped-storage generators, designed to secure rotor windings under high centrifugal loading.

Engineering case

Engineering challenge, manufacturing response and verified result

Component application, material and performance requirements are translated into defined manufacturing controls and documented verification.

01Project context
Component
Generator Guard Ring
Dimensions & Weight
Project-specific

Application

Hydro and pumped-storage generators

Material

50Mn18Cr5 high-manganese austenitic steel

Performance & acceptance points
  • Resists high centrifugal force
  • Designed for alternating operational loads
02Engineering problem

Challenge

For Hydro and pumped-storage generators, the Generator Guard Ring must use 50Mn18Cr5 high-manganese austenitic steel at project-specific dimensions and weight while meeting Resists high centrifugal force; Designed for alternating operational loads. The engineering challenge is coordinated control of metal flow, section uniformity and internal integrity.

03Manufacturing response

Manufacturing Scope

01Material & heat review02Heating & open-die forging03Post-forging heat treatment04Rough & finish machining05NDT & property testing06Final inspection & packing
Core Manufacturing Strategy

YL Solution

The forming strategy controls metal flow, section uniformity and internal integrity. Heating practice, deformation sequence, forging reduction, heat treatment and machining allowance are coordinated with defined material, dimensional, NDT and property release points.

Forming capabilityOpen-die hydraulic presses and project-specific tooling
Heat treatmentPost-forging heat treatment aligned to material and property targets
MachiningHeavy turning, milling and project-specific finishing
Inspection controlChemistry, mechanical properties, NDT and dimensional inspection
04Verified delivery

Result / Verification

Delivery basis: Machined condition. Resists high centrifugal force; Designed for alternating operational loads are incorporated into the project inspection plan, with final inspection records and the quality dossier supporting acceptance and release.

Product technical recordParameters, inspection and delivery records
Material grade50Mn18Cr5 high-manganese austenitic steel
ApplicationHydro and pumped-storage generator retaining ring
Critical loadsHigh centrifugal force and alternating operational stress
Critical controlsRing integrity, material homogeneity and dimensional stability
Inspection plan

Heat/lot traceability and chemical analysis

Mechanical-property testing to the approved specification

UT / MT / PT and dimensional inspection as technically required

Delivery dossier

Material certificate and heat/lot traceability

Heat-treatment and inspection records

Final dimensional report and release dossier

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