China Girth Gear for Grinding Ball Mill Rotary Kiln Production

Large Girth Gear for Ball Mill and Rotary Kiln Production

Casting & forging ability
CITICHL is the casting & forging center in central-south China, possessing 50t electric arc furnace, 60t LF ladle refining furnace, and 60t VD/VOD refining furnace, etc. We can pour 350t liquid steel one time and yields more than 200,000t of high quality liquid steel and can produce the high quality steel of more than 260 steel grades such as carbon steel, structural alloy steel and the structural steel, refractory steel and stainless steel of special requirement. The maximum weight of casting, gray casting, graphite cast iron and non-ferrous casting is 200t, 30t, 20t and 205t separately.

The company is the forging center in central-south China. It is very powerful in forging. The single free forging is 100t(max weight). We can roll rings of different sections of carbon steel, alloy steel, high temperature alloy and non-ferrous alloys such as copper alloy, aluminum alloy and titanium alloy. The maximum diameter is 5.5m and single piece of the forging weighs 10t. We have 8400t, 3150t, 1600t, water press and RAW 200/160-5000/750 large-size ring mill of high precision in Asia made in WAGNER, Germany.

Heat treatment ability
The company is the heat treatment base in national machinery trade in central and south China, possessing Φ3x1.6m carburizing furnace, Φ2.3x17m,Φ2.3x9.5m shaft furnace, 8.5x13m,5x15m,6x14.5m,4.5x18m automatic controlled car type heat treatment furnace group. We can supply the quenched and tempered part over 45t, the carburizedand quenched gear and pinion below 20t, shaft≤5.7m in length and the induced girth ring diameter≤5m

Our girth gears Features
Module Range: 10 Module to 70 Module.
Diameter : Min 800mm to16000 mm.
Weight : Max 120 MT single piece.
Three different designs: Fabricated steel - forged ring - rolled plate
Standards/Certificates :• UNI EN ISO • AWS • ASTM • ASME • DIN
Girth gear cutting machines
Φ16m CNC hobbing Machine
Φ12m Gear cutting machine (Switzerland)
Φ10m hobbing machine (Germany)
Φ4m CNC high speed hobbing machine (Germany)
Φ1.6m Horizontal CNC hobbing machine (Germany)
Φ5m CNC profile gear grinding machine (Germany)
Φ2.8m CNC Profile gear grinding machine (Germany)
Φ1.25m CNC Profile gear grinding machine (Germany)
Φ1m CNC Profile gear grinding machine (Germany)
Specifications of Gear :
No.ItemDescription 1Diameter≤15m 2Module≤45 3MaterialCast Alloy Steel, Cast Carbon Steel, Forged Alloy Steel, Forged Carbon Steel 4Structure FromIntegrated, Half to Half, Four Pieces and More Pieces 5Heat TreatmentQuenching & Tempering, Normalizing & Tempering, Carburizing & Quenching & Tempering 6Tooth FormAnnular Gear, Outer Gear Ring 7StandardISO, EN, DIN, AISI, ASTM, JIS, IS, GB
Inspection and Test Outline of Girth Gear:
No.ItemInspection AreaAcceptance CriteriaInspection StageCertificates1Chemical
CompositionSampleMaterial RequirementWhen Smelting
After Heat TreatmentChemical Composition
Report2Mechanical
PropertiesSample(Test Bar on the Gear Body)Technical RequirementAfter Heat TreatmentMechanical Properties
Report3Heat
TreatmentWhole BodyManufacturing StandardDuring Heat TreatmentHeat Treatment Report
Curves of Heat
Treatment4Hardness
TestTooth Surface, 3 Points Per 90°Technical RequirementAfter Heat TreatmentHardness Teat ReportAfter Semi Finish
Machining5Dimension
InspectionWhole BodyDrawingAfter Semi Finish

MachiningDimension Inspection
ReportFinish Machining6Magnetic Power Test (MT)Tooth SurfaceAgreed StandardAfter Finish Gear
HobbingMT Report7UTSpokes PartsAgreed StandardAfter Rough MachiningUT ReportAfter WeldedAfter Semi Finish
Machining8PTDefect AreaNo Defect IndicatedAfter Digging
After WeldedPT Record9Mark InspectionWhole BodyManufacturing StandardFinal InspectionPictures10Appearance
InspectionWhole BodyCIC's RequirementBefore Packing
(Final Inspection) 11Anti-rust
InspectionWhole BodyAgreed Anti-rust AgentBefore PackingPictures 12Packing
InspectionWhole BodyAgreed Packing FormDuring PackingPictures
Facilities For Manufacturing Gear ring:
No.ItemDescription1Smelting & Casting Capability
40t ,50t, 80t Series AC Electric Arc Furnace
2x150t, 60t LF Ladle Refining Furnace
150t, 60t Series VD/VOD Furnace
20x18m Large Pouring Facility
We can pour 900t refining liquid steel one time, and achieve vacuum poured 600t steel ingots.
We can produce the high quality steel of more than 260 steel grades as carbon steel,structural alloy steel and the structural steel, refractory steel and stainless steel of special requirement. The maximum weight of casting steel, gray casting, graphite cast iron and non-ferrous casting is 600t, 200t, 150t and 20t separately.2Forging Capability
The only one in the word, the most technologically advanced and the largest specification18500t Oil Press, equipped with 750t.m forging operation machine
8400t Water Press
3150t Water Press
1600t Water Press
Φ5m High Precision Ring Mill ( WAGNER,Germany)
Φ12m High Precision Ring Mill
We can roll rings of different sections of carbon steel, alloy steel, high temperature alloy steel and non-ferrous alloys such as copper alloy, aluminum alloy and titanium alloy. Max. Diameter of rolled ring will be 12m.3Heat Treatment Capability9x9x15m,8x8x12m,6x6x15m,15x16x6.5m,16x20x6m ,7x7x17m Series Heat Furnace and Heat Treatment Furnaces
φ2.0x30m,φ3.0x5.0m Series Heat Treatment Furnaces
φ5.0x2.5m,φ3.2x1.5m,φ3.0x5.0m,φ2.0x5m Series Carburizing Furnaces & Nitriding Furnaces & Quenching Bathes
φ2.0x30m Well Type CNC Electrical Furnaces
Φ3.0x5.0M Horizontal Gas Temperature-differential Furnace
Double-frequency and Double-position Quenching Lathe of Pinion Shaft4Machining Capability1. ≥5m CNC Heavy Duty Vertical Lathes
12m CNC Double-column Vertical Lathe
10m CNC Double-column Vertical Lathe
10m CNC Single-column Vertical Lathe
6.3m Heavy Duty Vertical Lathe
5m CNC Heavy Duty Vertical Lathe 2. ≥5m Vertical Gear Hobbing Machines
15m CNC Vertical Gear Hobbing Machine
10m Gear Hobbing Machine
8m Gear Hobbing Machine
5m Gear Hobbing Machine
3m Gear Hobbing Machining3. imported High-precision Gear Grinding Machines
0.8m~3.5m CNC Molding Gear Grinding Machines4. Large Boring & Milling Machines
220 CNC Floor-mounted Boring & Milling Machine
200 CNC Floor-mounted Boring & Milling Machine
160 CNC Floor-mounted Boring & Milling Machine

FAQ
Q: How about the quality of your products?
A: Our machines are manufactured strictly according to national and international standards, and we take a test on each equipment before delivery.


Q: How about the price?
A: We are manufactory, and we can give you lower price than those trade companies. Besides, customers from Made in China can get a discount.

Q: Do you provide after-sale service?
A: Yes. The warranty period of our machines is one year, and we have a professional after-sale team to promptly and thoroughly solve your problems.

Q: Do you provide equipment operation training?
A: Yes. We can send professional engineers to the working site for equipment installation, adjustment, and operation training. All of our engineers have passports.