With 30-year rich industry experience and knowledge, we have earned specialization in manufacturing and supplying superior quality Large Gears. These are fabricated in conformity with defined industry standards, these compact and sturdy gears have standard working speed and torque measurement. The offered range is widely acknowledged by the customers for features like optimum performance, robust construction and longer life. These precision engineered gears are widely demanded across varied industries, where large gear transmission is required.
Inspection and Test Outline of Girth Gear
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No.
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Item
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Inspection Area
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Acceptance Criteria
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Inspection Stage
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Certificates
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1
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Chemical Composition
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Sample
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Material Requirement
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When Smelting
After Heat Treatment
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Chemical Composition Report
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2
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Mechanical Properties
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Sample（Test Bar on the Gear Body）
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Technical Requirement
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After Heat Treatment
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Mechanical Properties Report
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3
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Heat Treatment
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Whole Body
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Manufacturing Standard
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During Heat Treatment
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Heat Treatment Report
Curves of Heat Treatment
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4
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Hardness Test
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Tooth Surface, 3 Points Per 90°
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Technical Requirement
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After Heat Treatment
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Hardness Teat Report
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After Semi Finish Machining
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5
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Dimension Inspection
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Whole Body
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Drawing
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After Semi Finish Machining
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Dimension Inspection Report
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Finish Machining
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6
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Magnetic Power Test (MT)
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Tooth Surface
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Agreed Standard
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After Finish Gear Hobbing
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MT Report
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7
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UT
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Spokes Parts
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Agreed Standard
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After Rough Machining
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UT Report
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After Welded
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After Semi Finish Machining
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8
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PT
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Defect Area
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No Defect Indicated
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After Digging
After Welded
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PT Record
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9
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Mark Inspection
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Whole Body
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Manufacturing Standard
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Final Inspection
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Pictures
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10
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Appearance Inspection
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Whole Body
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CIC’s Requirement
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Before Packing
(Final Inspection)
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11
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Anti-rust Inspection
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Whole Body
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Agreed Anti-rust Agent
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Before Packing
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Pictures
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12
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Packing Inspection
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Whole Body
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Agreed Packing Form
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During Packing
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Pictures
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Main Parameters for Gear Rings
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No.
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Item
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Description
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1
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Diameter
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≤15m
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|
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2
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Module
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≤45
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|
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3
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Material
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Cast Alloy Steel, Cast Carbon Steel, Forged Alloy Steel, Forged Carbon Steel
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|
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4
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Structure From
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Integrated, Half to Half, Four Pieces and More Pieces
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5
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Heat Treatment
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Quenching & Tempering, Normalizing & Tempering, Carburizing & Quenching & Tempering
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|
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6
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Tooth Form
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Annular Gear, Outer Gear Ring
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7
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Standard
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ISO, EN, DIN, AISI, ASTM, JIS, IS, GB
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Facilities For Manufacturing Gear ring
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No.
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Item
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Description
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1
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Smelting & Casting Capability
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40t ,50t, 80t Series AC Electric Arc Furnace
2×150t, 60t LF Ladle Refining Furnace
150t, 60t Series VD/VOD Furnace
20×18m 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.
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2
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Forging Capability
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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.
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3
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Heat Treatment Capability
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9×9×15m, 8×8×12m, 6×6×15m, 15×16×6.5m, 16×20×6m, 7×7×17m Series Heat Furnace and Heat Treatment Furnaces
φ2.0×30m, φ3.0×5.0m Series Heat Treatment Furnaces
φ5.0×2.5m, φ3.2×1.5m, φ3.0×5.0m, φ2.0×5m Series Carburizing Furnaces & Nitriding Furnaces & Quenching Bathes
φ2.0×30m Well Type CNC Electrical Furnaces
Φ3.0×5.0M Horizontal Gas Temperature-differential Furnace
Double-frequency and Double-position Quenching Lathe of Pinion Shaft
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4
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Machining Capability
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1. ≥Ф5m CNC Heavy Duty Vertical Lathes
Ф12m CNC Double-column Vertical Lathe
Ф10m CNC Double-column Vertical Lathe
Ф10m CNC Single-column Vertical Lathe
Ф6.3m Heavy Duty Vertical Lathe
Ф5m CNC Heavy Duty Vertical Lathe
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2. ≥Ф5m Vertical Gear Hobbing Machines
Ф15m CNC Vertical Gear Hobbing Machine
Ф10m Gear Hobbing Machine
Ф8m Gear Hobbing Machine
Ф5m Gear Hobbing Machine
Ф3m Gear Hobbing Machining
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3. Imported High-precision Gear Grinding Machines
Ф0.8m～Ф3.5m CNC Molding Gear Grinding Machines
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4. Large Boring & Milling Machines
Ф220 CNC Floor-mounted Boring & Milling Machine
Ф200 CNC Floor-mounted Boring & Milling Machine
Ф160 CNC Floor-mounted Boring & Milling Machine
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Facitilies for Gear Mahcining
Packing Pictures of the Gear
