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products

Main Data

  • Description:
    • Heavy plate mill ZC-worm gear set
    • Module: 17 mm
    • Helical angle: 33°36’11”
    • Helical hand: Right
  • Heavy plate mills ZC-worm
    • GEARX No.: SW17-1RG
    • Module: 17 mm
    • No. of starts: 1
    • Helical angle: 33°36’11”
    • Helical hand: Right
    • Material: 20CrMnMo
    • Heat treatment: Through quenching and tempering, then carburizing hardened
    • Tooth hardness: HRC48-52
    • Case hardening depth(CHD): 1.5 mm
    • Tip Diameter: 289 mm
    • Reference diameter: 255 mm
    • Root diameter: 212.5 mm
    • Face width: 400 mm
    • Tooth surface finish: Ground
    • Accuracy grade: ISO 6
    • Weight of gear blank: 592 kg
    • Weight: 348 kg
  • Heavy plate mill ZC-worm gear
    • GEARX No.: BWG17-64R
    • Module: 17 mm
    • No. of teeth: 64
    • Helical angle: 33°36’11”
    • Helical hand: Right
    • Material:
    • Centrifugal casting bronze ZQSn10-1
    • Tip Diameter: 1139 mm
    • Reference diameter: 1105 mm
    • Root diameter: 1062.5 mm
    • Face width: 835 mm
    • Tooth surface finish: Hobbing
    • Accuracy grade: ISO 6
    • Weight of gear blank: 5700 kg
    • Weight: 3845 k

Application

  • Heavy plate mills

The Main Fabrication Procedure

  • Heavy plate mill ZC-worm
    • Forging the gear blank
    • Normalizing
    • Rough machining
    • Ultrasonic inspection, analyzing the chemical composition
    • Quenching and tempering
    • Semi-finish turning
    • Rough grinding the external and ends
    • Rough notch
    • Rough gear grinding
    • Carburizing and quenching
    • Finish grinding the external and ends
    • Gear grinding
    • Inspection magnetic inspection the tooth flank, then magnet demagnetization
  • Heavy plate mill ZC-worm gear
    • Centrifugal casting the gear blank
    • Rough machining
    • Semi-finish turning
    • Finish turning
    • Hobbing

Technical Documents

  • Heavy plate mill ZC-worm
    • Inspection certificate of material
    • Heat treatment certificate
    • Certificate of ultrasonic inspection
    • Magnetoscopic test certificate(on tooth flank)
    • Size tolerance and geometric tolerance report
    • Inspection report of tooth quality
  • Heavy plate mill ZC-worm gear
    • Inspection certificate of material
    • Size tolerance and geometric tolerance report
    • Inspection report of tooth quality

Relative Standards

  • ISO/TR 10828:1997(E) Worm gears - Geometry of worm profiles
  • ISO 1122-1:1998 Vocabulary of gear terms - Part 1 Definitions related to geometry
  • ISO 1122-2:1999(E/F) Vocabulary of gear terms - Part 2: Definitions related to worm gear geometry
  • ISO/TR 14521:2010 Gears -- Calculation of load capacity of wormgears