China Custom Super Ring Girth Gear with Steel Material with high quality

Product Description

CITICIC 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 1 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.

 

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: • CHINAMFG EN ISO • AWS • ASTM • ASME • DIN

 

Advantages:

– Products with Customers’ Designs

– Strong Machining & Heat Treatment Abilities

– Strict Quality Control

– Prompt Delivery

– Experience in Cooperation with Fortune 500 Companies

 

Process:

Forging / Casting

Normalizing & Tempering-Proof Machining

Quenching & Tempering

Finish Machining (Teeth Grinding)

 

We can offer you in various process conditions solutions for Many End Markets and Applications

–Mining

–Metallurgy

–Power Generation

–Sugar

–Cement Plant

–Port Machinery

–Oil and natural

–Papermaking

–OEM gear case

–General Industrial

 

Specifications Of Gear:

No.

Item

Description

1

Diameter

≤15m

2

Module

≤45

3

Material

Cast Alloy Steel, Cast Carbon Steel, Forged Alloy Steel, Forged Carbon Steel

4

Structure From

Integrated, Half to Half, Four Pieces and More Pieces

     

5

Heat Treatment

Quenching & Tempering, Normalizing & Tempering, Carburizing & Quenching & Tempering

     

6

Tooth Form

Annular Gear, Outer Gear Ring

7

Standard

ISO, EN, DIN, AISI, ASTM, JIS, IS, GB

 

Inspection And Test Outline Of Girth Gear:

No.

Item

Inspection Area

Acceptance Criteria

Inspection Stage

Certificates

1

Chemical 
Composition

Sample

Material Requirement

When Smelting
After Heat Treatment

Chemical Composition 
Report

2

Mechanical
Properties

Sample (Test Bar on the Gear Body)

Technical Requirement

After Heat Treatment

Mechanical Properties 
Report

3

Heat 
Treatment

Whole Body

Manufacturing Standard

During Heat Treatment

Heat Treatment Report
Curves of Heat 
Treatment

4

Hardness 
Test

Tooth Surface, 3 Points Per 90°

Technical Requirement

After Heat Treatment

Hardness Teat Report

After Semi Finish 
Machining

         

5

Dimension 
Inspection

Whole Body

Drawing

After Semi Finish

Machining

Dimension Inspection 
Report

Finish Machining

         

6

Magnetic Power Test (MT)

Tooth Surface

Agreed Standard

After Finish Gear 
Hobbing

MT Report

7

UT

Spokes Parts

Agreed Standard

After Rough Machining

UT Report

After Welded

         

After Semi Finish 
Machining

         

8

PT

Defect Area

No Defect Indicated

After Digging
After Welded

PT Record

9

Mark Inspection

Whole Body

Manufacturing Standard

Final Inspection

Pictures

10

Appearance Inspection

Whole Body

CIC’s Requirement

Before Packing (Final Inspection)

 

11

Anti-rust 
Inspection

Whole Body

Agreed Anti-rust Agent

Before Packing

Pictures

12

Packing 
Inspection

Whole Body

Agreed Packing Form

During Packing

Pictures

 

Facilities For Manufacturing Gear Ring:

No

Item

Description

1

Smelting & Casting Capability

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 1 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.

2

Forging Capability

The only 1 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 (Germany)
Φ12m High Precision Ring Mil
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.

3

Heat Treatment Capability

9×9×15m, 8×8×12m, 6×6×15m, 15×16×6.5m, 16×20×6m, 7×7×17m Series Heat CHINAMFG 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

4

Machining Capability

1. ≥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 Machining

 

3. Imported High-precision Gear Grinding Machines
0.8m~3.5m CNC Molding Gear Grinding Machines

 

4. 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

 

Application: Industry
Hardness: According to Customer′s Requirement
Gear Position: External Gear
Manufacturing Method: Cast Gear
Toothed Portion Shape: Spur Gear
Material: Steel
Customization:
Available

|

Customized Request

ring gear

What is the purpose of using ring gears in machinery?

Ring gears serve multiple purposes and offer various advantages when used in machinery. Here’s a detailed explanation of the purpose of using ring gears:

  • Power Transmission: One of the primary purposes of ring gears in machinery is to facilitate power transmission. Ring gears, along with other meshing gears, transmit torque and rotational motion from the driving gear to the driven components or systems. They enable the transfer of power from a power source to various parts of the machinery, driving the movement and operation of different mechanisms and processes.
  • Gear Ratio Control: Ring gears allow for precise control over the gear ratio in machinery. By adjusting the size of the ring gear and its meshing gears, different gear ratios can be achieved. Gear ratios determine the relationship between the rotational speeds and torques of the driving and driven gears. This ability to control the gear ratio enables machinery to operate at desired speeds, optimize torque output, and adapt to specific application requirements.
  • Mechanical Advantage: Ring gears provide a mechanical advantage in machinery. By leveraging the gear ratio control mentioned above, ring gears can amplify or reduce the torque output of the power source. This mechanical advantage allows machinery to generate higher forces or torques than the original power source alone. It enables the machinery to handle heavy loads, perform tasks requiring significant force, and enhance overall operational efficiency.
  • Load Distribution: Ring gears contribute to load distribution within machinery. The meshing teeth of the ring gear engage with multiple teeth of other gears, distributing the transmitted loads across these meshing points. This load distribution helps prevent excessive stress concentration on specific gear teeth, ensuring even wear and reducing the risk of gear failure. By distributing the load, ring gears enhance the overall durability and reliability of the machinery.
  • Motion Control: Ring gears play a crucial role in motion control within machinery. By transmitting rotational motion, ring gears enable precise movement and synchronization of various components and mechanisms. They ensure that different parts of the machinery operate in a coordinated manner, allowing for smooth and controlled motion. Ring gears contribute to accurate positioning, speed regulation, and overall motion precision in machinery.
  • Compact Design: Ring gears offer a compact design solution. Due to their annular shape, they can be integrated into machinery with limited space. The compactness of ring gears is particularly beneficial in applications where space constraints are a concern. Their small footprint allows for efficient use of available space, enabling the design of more compact and lightweight machinery without sacrificing power transmission capabilities.
  • Versatile Applications: Ring gears find wide applications across various industries and machinery types. They are used in automotive transmissions, industrial machinery, robotics, aerospace systems, power generation equipment, and more. The versatility of ring gears stems from the ability to configure them in different types, such as external or internal ring gears, helical gears, or bevel gears. This versatility makes ring gears adaptable to a wide range of machinery designs and requirements.

By serving these purposes, ring gears contribute to the efficient and reliable operation of machinery. They enable power transmission, gear ratio control, mechanical advantage, load distribution, motion control, and compact design, making them essential components in various mechanical systems.

ring gear

How do you prevent backlash and gear play in a ring gear mechanism?

Preventing backlash and gear play in a ring gear mechanism is crucial for ensuring accurate and precise operation. Here’s a detailed explanation of how to prevent backlash and gear play in a ring gear mechanism:

  • Precise Gear Design: The design of the ring gear and associated gears should be carefully engineered to minimize backlash. This involves selecting appropriate tooth profiles and gear geometry that promote proper meshing and minimize clearance between the gear teeth. The gear design should consider factors such as tooth thickness, pressure angle, and tooth contact ratio to achieve optimal gear meshing without excessive play.
  • Tight Manufacturing Tolerances: Close manufacturing tolerances are essential to reduce backlash in a ring gear mechanism. The gear components, including the ring gear and mating gears, should be produced with high precision to ensure accurate tooth dimensions and minimize any gaps or play between the gear teeth. Tight manufacturing tolerances help achieve a tighter meshing fit, reducing backlash and gear play.
  • Proper Gear Alignment: Accurate alignment of the ring gear and mating gears is crucial for minimizing backlash. The gears should be properly aligned along their axes to ensure precise engagement and minimize any misalignment that can contribute to play. Adequate alignment can be achieved through careful assembly techniques, such as using alignment fixtures, proper shimming, and precision measurement tools.
  • Preload or Pre-tension: Applying preload or pre-tension to the ring gear mechanism can help reduce backlash and gear play. Preload involves applying a slight compressive force or tension to eliminate any clearance or gaps between the gear teeth during operation. This can be achieved through various methods, such as using spring-loaded components, adjustable shims, or axial preloading devices.
  • Optimized Lubrication: Proper lubrication is essential for reducing friction and minimizing gear play. Lubricants with appropriate viscosity and film strength should be used to ensure smooth gear operation and reduce any unwanted movement or play between the gear teeth. Regular lubricant maintenance, such as monitoring oil levels and replenishing or replacing lubricants as needed, helps maintain optimal lubrication conditions and minimize backlash.
  • Mechanical Backlash Compensation: In some applications, mechanical compensation mechanisms can be employed to actively compensate for any residual backlash. These mechanisms can include systems with adjustable clearances, anti-backlash devices, or dual-gear arrangements that counteract the effects of backlash. Mechanical backlash compensation techniques can help maintain precise positioning and eliminate any undesired play in the gear mechanism.

By implementing these measures, it is possible to significantly reduce or eliminate backlash and gear play in a ring gear mechanism. Careful gear design, tight manufacturing tolerances, proper alignment, preload or pre-tension, optimized lubrication, and mechanical compensation techniques all play a role in ensuring accurate and precise operation of the ring gear mechanism.

ring gear

Can you explain the concept of meshing with a ring gear?

Meshing with a ring gear refers to the process of engaging and interlocking the teeth of a gear with the internal teeth of a ring gear. It is a fundamental concept in gear systems where the rotation and torque transfer occur between two gears. Here’s a detailed explanation of the concept of meshing with a ring gear:

When two gears come into contact and their teeth interlock, they are said to be meshing. In the case of a ring gear, the meshing occurs when the teeth of an external gear, such as a pinion gear, engage with the internal teeth of the ring gear. The teeth of the pinion gear fit precisely between the teeth of the ring gear, creating a mechanical connection.

The process of meshing involves several important considerations:

  • Tooth Engagement: Proper tooth engagement is crucial for efficient and smooth meshing. The teeth of the gears must align correctly to ensure a proper fit. This alignment ensures that the teeth make contact at the correct pitch point and maintain a consistent mesh throughout the gear rotation.
  • Tooth Profile: The tooth profile, such as the shape and size of the teeth, is designed to facilitate smooth meshing. The profile ensures that the teeth slide smoothly against each other without excessive friction, noise, or wear. The tooth profile also affects the load distribution, torque transmission, and overall performance of the gear system.
  • Lubrication: Lubrication plays a crucial role in the meshing process. It helps reduce friction and wear between the teeth, ensuring smooth operation and preventing damage to the gears. Proper lubrication also helps dissipate heat generated during meshing, improving the overall efficiency and reliability of the gear system.
  • Clearance and Backlash: Clearance and backlash are important considerations in gear meshing. Clearance refers to the space between the tips of the teeth of the external gear and the root of the teeth of the ring gear. Backlash is the amount of play or movement between the engaged teeth. Proper clearance and backlash are necessary to prevent interference, ensure smooth rotation, and accommodate any misalignment or thermal expansion that may occur during operation.

The quality of the meshing directly affects the performance, efficiency, and reliability of the gear system. Proper design, manufacturing precision, and maintenance practices are essential to achieve optimal meshing between gears, including ring gears.

It’s important to note that the specific parameters and requirements for meshing, such as tooth geometry, clearance, backlash, and lubrication, may vary depending on the application, gear type, and operating conditions.

China Custom Super Ring Girth Gear with Steel Material with high qualityChina Custom Super Ring Girth Gear with Steel Material with high quality
editor by CX 2023-10-20

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