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HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel

    Buy cheap HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel from wholesalers
     
    Buy cheap HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel from wholesalers
    • Buy cheap HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel from wholesalers
    • Buy cheap HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel from wholesalers

    HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel

    Ask Lasest Price
    Brand Name : ZTIC
    Model Number : Mill Girth Gear
    Certification : ISO/CE
    Price : negotiate
    Payment Terms : L/C, T/T
    Supply Ability : 5000 Set/Sets per Year
    • Product Details
    • Company Profile

    HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel

    HB210~250 Mill Girth Gear High Strength High Hardness High Resistance Alloy Steel


    1.Basic introduction to Girth Gears
    Girth Gears offered find extensive application in different industry sectors including in sponge iron plants, steel & cement industry, mining industry, wind mills as well as in other industry sectors. These are made available in module range of 10 Module to 70 Module and in minimum diameters of 100 mm to 15000 mm. Further, these comprise maximum weight of 70 MT single pieces. Here the range of hardened & ground gear boxes/gears comprise Worm gear boxes, Helical / Double helical gears/gearboxes, Helical-Bevel gearboxes, Planetary Gearboxes and others.With more than 1000 girth gears sold over the world CITICIC Gear is a leading supplier in the cement and mineral industry.

    2.ZTIC Gear Cutting Machines include
    Ø16m CNC Hobbing Machine
    Ø12m Gear Cutting Machine (Switzerland)
    Ø10m Hobbing Machine (Germany)
    Ø4m CNC High Speed Hobbing Machine (Germany)
    Ø1.6m Horizontal CHC Hobbing Machine (Germany)
    Ø5m CNC Profile Gear Grinding Machine (Germany)
    Ø2.8m CNC Profile Gear Grinding Machine (Germany)
    Ø1.25m CNC Profile Gear Grinding Machine (Germany)
    Ø1m CNC Profile Gear Grinding Machine (Germany)
    Ø0.8m CNC Profile Gear Grinding Machine (Germany)


    3.Basic components of Girth Gears
    (1) Ductile (Nodular) cast iron
    Fabricated gears became more common in the past and are constructed with forged steel gear rim materials and electro welded body structure. The rings are manufactured from a whole block of high resistance alloy steel. After the rough machining of the ring, we carry out hardening and tempering heat treatment in order to improve the mechanical characteristic and therefore its relevant performance.
    (2) Avantages of fabricated girth gears
    The forged material structure excludes the risk of inclusions and avoids structural defects such as porosity, micro-shrinkage, pinholes, thermal cracks, sand and slag inclusions. As a result, there is no need for restorative welding of the main structure, grinding of the tooth area, etc. The manufacturing procedure excludes the need for patterns and risers. The rim material has higher hardness and strength than the material used for the underlying structure (i.e. webs, cleats). These features will reduce delivery times and costs. Process manufacturing ensures fast delivery.

    (3) External teeth
    Maximum diameter: 16000 mm
    Toothed face width: 1700 mm
    Maximum module: 45 by hob
    Maximum module: 65 gear finishing cutter
    (4) Internal teeth
    Maximum Diameter: 6500 mm
    Maximum module: 25.4
    Toothed face width: 400 mm
    (5) Pinions
    ZTIC Gear invested in significant resources and achieved many innovations with pinions. The right combination of material, hardness and finishing between pinion and gear is crucial for a long lifetime of the installed equipment. We design and manufacture pinions to match every customers need, no matter how unique the situation might be.

    4.Quality assurance documents
    The following reports are to be submitted to Quality Assurance:
    a. Chemistry report
    b. Physical report
    c. Heat treatment documents
    CITIC HMC Q/HM 973.2-2007 Specification for Steel Castings for Grinding Mills
    d. Ultrasonic inspection report (before and after repairs)
    e. Magnetic particle inspection report (before and after repairs)
    f. Dimensional report
    g. Weld repair maps
    h. Weld procedures and Procedure qualification record
    i. Welder qualification
    j. Nondestructive testing inspector qualification


    5. Mill Girth Gear Technical parameters

    ItemStructural featuresProcessing measureTest content
    Girth Gear(1)GS42CrMo4Alloy Steel (corporate proprietary standards)
    HB 220~240
    (2)semi-structured, Y-Spoke
    (3)Helical
    (4) reasonable sealing and alignment structure of alloy steel (corporate proprietary standards)
    (1) outer steel refining (R-H argon and vacuum treatment)
    (2) proprietary cold mold hanging sand technology to ensure the casting, the teeth dense
    (3) normalizing (proprietary technology) to ensure that the tooth surface hardness
    After
    (4)rough hobbing, release time, repair the joint surface, then fine roll
    (5) proprietary homemade hob fine hobbing
    (1)castings mechanical properties and chemical composition (internal standard)
    (2) roughing after sonic testing
    (3)semi-finishing, finishing after ultrasonic testing and magnetic particle inspection
    (4) tooth surface magnetic particle inspection, hardness test
    (5)tooth tolerance check
    (6) the factory assembly load test to check the accuracy of the size of gear

    6. Mill Girth Gear photo explanation

    Quality HB210~250 Mill Girth Gear High Strength Hardness High Resistance Alloy Steel for sale
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