China Standard Large Cast Spur Gear in Two Halves for Cement Mill/Vertical Mill cycle gear

Product Description

Product Parameters

The material is low carbon or alloy steel,such as ZG270-500,ZG42CrMo,ZG35Mn and so on.

Material C Si Mn P S
ZG270-500 0.32-0.40 0.20-0.52 0.45-0.90 ≤0.035 ≤0.035

 

Material C Si Mn P S Cr Mo
ZG42CrMo 0.38-0.43 0.15-0.35 0.75-1.00 ≤0.035 ≤0.035 0.80-1.10 0.15-0.25

 

Material C Si Mn P S
ZG35Mn 0.30-0.40 0.60-0.80 1.10-1.40 ≤0.035 ≤0.035

It is up to customers’ requirement.
 

Item Standard
Casting Material EN 15713/EN 10571/BS 3100/DIN 1681/DIN17205
Casting Tolerance in Blank ISO 8062 CT 13
Size Tolerance DIN ISO 2768m
NDT ASTM A609 Level 2 or 3 /EN 12680/ASTM E94 Level 2 or 3
Heat Treatment Normalizing+Tempering+Quenching
Hardness As Required

 

Company Profile

Haian CHINAMFG Casting Co.,Ltd. is established in 2003 in CHINAMFG Town.

In 2007,we moved our factory to Sunzhuang town and now we can supply bigger steel castings with max. weight 45 tons.

In 2011,we built a new sand mold maiking workshop with 120 tons refinining CHINAMFG and the max. weight can be 120 tons.

In 2013,we paid more attenion on the castings for shipbuilding and started to supply marine castings for most of domestic famous shipyards.

From 2013 to 2571,we bought more and more machines to strengthen our ability from rough machining to finished machining.

In 2571,we built another new sand mold making workshop for the quick development of market requirement.

Now we monthly supply 6000 tons different castings for different customers of different industry,such as cement mill,shipubuilding,petroleum machinery,rolling mill,forging press and so on.

Prodcution Process

1)Pattern making

We have our own wooden pattern making workshop.
But our company is always busy,
we also have around 10 sub-contractors for pattern making.
They help us for the pattern but will be inspected according to our rules.
We will record for every pattern inspection.

2)Silica or chorme sand cores
We have around 80 technicans for sand core making which is divided into around 10 teams.
Most of the technicans has more than 10 years’ experience.
Most of the sand core is made by silica sand with common sand inside of it.
The common sand will be used repeatly.
For some important position,such as R corner,we will use chorme ore sand.
The outside of the sand core,we will do the painting,burn and clean it.
We will assemble diffrent sand cores together and wait for pouring.

3)Melting and Pouring

We always do the melting after mid-night for cheaper electric charge.
And we normally do pouring in the early morning.

No. Equipment Name Quantity(Set)
1 25 tons Electrical Arc Furnace 1
2 50 tons Intermediate Frequency Furnace 2
3 120 tons Refining Furnace 1
4 120 tons VD Furnace 2

Before and after pouring,we will do the chemical compostion test.

4)Cooling

After pouring,we will wait for different time for cooling according to casting’s weight.

Item Weight in blank(Metric Tons) Cooling Time(Hour)
1 <25 48
2 >25-40 72
3 >40-55 96
4 >55-72 120
5 >72-96 144
6 >96-115 168
7 >115 192

We have our experience and rules for cooling time.
After cooling,we will shake the casting out of the steel boxes and clean them.
5)Heat Treatment
Normalizing will be 3 days while tempering is 4 days.
We have around 10 sets of heat treatment furnaces.
The biggest 1 is 12m*9m*6m.
It is also the biggest size of castings we can make.

After heat treatment,we will do the mechanical property test.
Our ordinary test block’s size is 230mm*70mm*50mm.
One casting part will min. have 3 pcs test blocks.
We have our testing center and it is approved by CNAS. 
6)Draw the line and do the first rough machining
We can do the machining from rough to finished machining.

7)NDT after rough machining

8)Welding repair
We have rich experience for making support rollers and kiln tyres,
then there is no welding for the outside working position.
This is our special technology.
Every year we supply around 400pcs kiln tyres,930pcs support roller,170 sets gear( in 2 halves).
But for some other castings,if we do the welding repair,
we will do the tempering for stress relief later.
All of our welders have the SGS certficate.

9)Shot blasting and grinding
We have a robert grinder.
We have a 120 tons rotary shot blasting table.

 

10)Final machining
We have a lot of vertical lathes from 2.5m to 10m.

 

Certifications

We get approval from CNAS for our laboratory.
We also have 9 class certificate,such as ABS,DNV,NK,RINA,KR,CCS,BV and so on.

 

Packaging & Shipping

We supply a lot of castings for cement mill,rolling mill,shipbuilding and so on.

We can do the packing according to our rules or according to customers’ requirement.

 

After Sales Service

Normally there is a 12 months quality warantty.

We do at least 3 times NDT:after rough,semi-finished and finished machining.

And also the customer will do the witness during or after finished machining.

If there is also any problem when you receive the castings,
please send us photos and detailed defects,
we will negotiate with you and make a compensation.

A third party inspection before shipment is welcomed.

 

Shipping Cost:

Estimated freight per unit.



To be negotiated
Type: Chemical Hardening Sand
Casting Method: Directional Crystallization
Sand Core Type: Sodium Silicate Sand Core
Samples:
US$ 20/kg
1 kg(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

spur gear

Can spur gears be used in precision manufacturing equipment?

Yes, spur gears can be used in precision manufacturing equipment. Here’s a detailed explanation:

Precision manufacturing equipment requires high accuracy, repeatability, and reliability to produce intricate and precise components. While other gear types like helical gears or bevel gears are commonly used in precision applications, spur gears can also be suitable in certain scenarios.

1. Low-Speed Applications:

Spur gears are well-suited for low-speed applications where high precision is required. In precision manufacturing equipment, such as milling machines, lathes, or grinding machines, where controlled and precise rotational motion is essential, spur gears can provide the necessary power transmission with accuracy.

2. Linear Actuators and Positioning Systems:

Spur gears can be used in linear actuators and positioning systems within precision manufacturing equipment. These systems require precise movement control, and spur gears can convert rotary motion into linear motion accurately. By incorporating precision-ground spur gears with proper backlash control, highly accurate positioning can be achieved.

3. Tooling Systems:

Spur gears are employed in tooling systems used in precision manufacturing equipment, such as indexing heads and rotary tables. These systems enable precise and repeatable positioning of workpieces or cutting tools. Spur gears with high precision tooth profiles and low backlash are utilized to ensure accurate tool positioning and consistent machining results.

4. Measuring and Inspection Equipment:

In precision manufacturing, gear systems are also utilized in measuring and inspection equipment. Spur gears can be incorporated into gear trains within instruments like coordinate measuring machines (CMMs) or optical comparators to translate linear or rotary motion into precise measurement data. The gear systems in these instruments require minimal backlash and high accuracy to ensure accurate measurements.

5. Customized Gear Systems:

In some cases, precision manufacturing equipment may require custom-designed gear systems to meet specific application requirements. Spur gears can be tailored and optimized for these custom gear systems, taking into account factors like gear tooth profile, material selection, and gear geometry. This allows for the creation of highly precise and specialized gear systems.

While spur gears have advantages in precision manufacturing equipment, it’s important to consider their limitations. Due to their design, spur gears may produce more noise and vibration compared to other gear types. Additionally, they are generally not suitable for high-speed or high-torque applications that demand continuous and smooth power transmission.

Overall, spur gears can be successfully used in precision manufacturing equipment for specific applications that require low-speed, precise motion control, accurate positioning, and measurement capabilities. Proper gear selection, high-quality manufacturing, and careful system integration are key to achieving the desired precision and performance in these gear applications.

spur gear

Can you provide examples of machinery that use spur gears?

Spur gears are widely used in various machinery and mechanical systems due to their simplicity, efficiency, and versatility. Here are some examples of machinery and equipment that commonly utilize spur gears:

  • Automotive Industry: Spur gears are found in various automotive applications, including manual transmissions, differential gears, and starter motors. They are used to transmit power and torque efficiently in these systems.
  • Mechanical Clocks and Watches: Traditional mechanical clocks and watches often utilize spur gears to transfer rotational motion from the mainspring to the hour, minute, and second hands. These gears play a crucial role in accurate timekeeping.
  • Printing Presses: Spur gears are employed in printing presses to synchronize the movement of different components, such as rollers and paper feed mechanisms. They ensure precise and coordinated operation during the printing process.
  • Industrial Machinery: Many types of industrial machinery rely on spur gears, including conveyors, packaging equipment, textile machinery, and machine tools. Spur gears help transmit power and control the movement of various components in these machines.
  • Power Plants: Spur gears can be found in power generation facilities, such as steam turbines and gas turbines. They help transfer rotational motion from the turbine shaft to the generator shaft, enabling the production of electrical power.
  • Agricultural Equipment: Agricultural machinery, such as tractors, combines, and harvesters, often utilize spur gears in their drive systems. These gears help transmit power from the engine to the wheels or other operational components.
  • Robotics and Automation Systems: Spur gears are commonly used in robotics and automation systems to transmit power and control the movement of robotic arms, conveyor systems, and other mechanical components.
  • Power Tools: Many power tools, including drills, saws, and grinders, incorporate spur gears in their gearboxes. These gears help increase torque and provide the necessary speed reduction for efficient tool operation.

These examples represent just a few of the many applications where spur gears are utilized. Spur gears’ simplicity, cost-effectiveness, and ability to handle high load capacities make them suitable for a wide range of machinery and mechanical systems in various industries.

It’s important to note that different gear types, such as helical gears, bevel gears, or planetary gears, may also be used in conjunction with spur gears or in different applications depending on specific requirements and design considerations.

spur gear

What industries commonly use spur gears?

Spur gears find wide applications across various industries due to their simplicity, efficiency, and versatility. Here’s a detailed explanation of the industries that commonly use spur gears:

  • Automotive Industry: The automotive industry extensively utilizes spur gears in various components and systems. They are commonly found in gearboxes, differentials, transmission systems, and engine timing mechanisms. Spur gears play a crucial role in transferring power and rotational motion between the engine, wheels, and other drivetrain components.
  • Machinery and Manufacturing: Spur gears are widely employed in machinery and manufacturing equipment across different sectors. They are used in conveyor systems, machine tools, printing presses, textile machinery, packaging machinery, and a variety of industrial applications. Spur gears facilitate power transmission and motion control in these systems.
  • Power Generation: Spur gears are essential in power generation systems such as wind turbines, hydroelectric turbines, and steam turbines. They are used to transmit power from the rotor to the generator, converting the rotational motion of the turbine blades into electricity. Spur gears enable efficient power transfer in these renewable energy systems.
  • Robotics and Automation: Spur gears have significant applications in robotics and automation systems. They are used in robotic joints, actuators, and drive systems to control motion and transmit torque accurately and efficiently. Spur gears enable precise movement and force transmission in robotic applications.
  • Aerospace and Aviation: The aerospace and aviation industries utilize spur gears in various applications. They can be found in aircraft landing gear systems, engine components, flight control systems, auxiliary power units (APUs), and other critical equipment. Spur gears play a vital role in transmitting power and controlling movement in these aerospace systems.
  • Marine and Shipbuilding: Spur gears are commonly used in the marine and shipbuilding industry. They find applications in propulsion systems, winches, steering mechanisms, and other equipment that require torque transmission and speed control. Spur gears enable efficient power transfer and maneuverability in marine vessels.
  • Appliances and Household Equipment: Spur gears are present in numerous household appliances and equipment. They are used in washing machines, dishwashers, mixers, food processors, garage door openers, and many other appliances that require rotational motion and power transmission. Spur gears facilitate the efficient operation of these household devices.
  • Power Tools: Spur gears are widely utilized in power tools such as drills, saws, grinders, and sanders. They enable the transmission of power from the motor to the tool’s cutting or grinding components, ensuring efficient and controlled operation. Spur gears contribute to the functionality and performance of power tools.
  • Medical Equipment: Spur gears are used in various medical devices and equipment. They can be found in imaging systems, surgical robots, medical pumps, and other applications that require precise motion control and torque transmission. Spur gears play a critical role in the functioning of medical equipment.
  • Clocks and Watches: Spur gears are a fundamental component in mechanical clocks and watches. They are responsible for accurate timekeeping by transferring rotational motion from the mainspring or oscillator to the hour, minute, and second hands. Spur gears have historical significance in timekeeping mechanisms.

These are just a few examples of the industries where spur gears are commonly used. Their simplicity, reliability, and efficiency make them a popular choice in a wide range of applications, enabling power transmission, motion control, and precise operation in diverse industrial sectors.

China Standard Large Cast Spur Gear in Two Halves for Cement Mill/Vertical Mill cycle gearChina Standard Large Cast Spur Gear in Two Halves for Cement Mill/Vertical Mill cycle gear
editor by CX 2023-09-25