Increasing Demands For Leaf Chain

Generally speaking, leaf chain is also called conveying plate chain. This chain is used for connect two solid and rotate between them. It is a conveying mechanical device. Chain plate may be composed of movable component or folding material. It could be divided into two types according to the materials. They are stainless steel chain plate and chains plate.

Hydraulic chain plate can get better operation and maintenance in the production of transport operations. This chain plate has buffer capacity and can reduce voice in the maximum extent. With the cheap price of manufacture leaf chain, food industry enterprises get more and more affordable. Recent years, the production demand for food industry has been improved constantly. So the demand for food conveyor accessories will be increased greatly.

Anti blocking device of leaf chain consist of vibrating motor and base and fixed into integration tightly by bolts. This device constitutes a forced vibration system which is in single point orientation. That is because the base is tightly arranged on the bin wall. Anti occlusion device should lay the vibration plate in the warehouse. Anti occlusion device is rely on high frequency vibration and impact force. Anti blocking device can eliminate the phenomenon of bridging, arch and jam effectively.

Adjust Motorcycle Chain Correctly

Motorcycle chain can be divided into two types. They are used for different positions. Some are used in the engine, some are used outside the engine. Motorcycle chains are mostly belong to bushing chains.

When you adjust the motorcycle chain, you should be more careful. At first, adjust the tightness of motorcycle chain timely. Checking the buffer bearing usually and adding grease. It will be damaged without lubrication. That will lead to bad result. Besides you should know that whether before and after the gear plate and the chains are on the same straight line or not. If there is any problem, you must handle it quickly.

Chain is an important part to motorcycle. You must choose a good manufacture to get motorcycle chains. Cleaning chain regularly and adding grease timely. With rain, snow weather or even in muddy road, you should pay more attentions to maintenance. So that the service life of the chain will be extend. You should often check the fit clearance between the rear fork buffering rubber sleeve, wheel fork and its shaft. This position need cooperate rigorous and up and down movement must be flexible.

Application Of Roller Chain Coupling

Chain coupling is regarded as a kind of common tool. Roller chain is also own coupling. I has simple structure. When you assembly or disassembly the roller chain coupling, you will find it is very easy and not need to move the two connected.

Roller chain coupling can used for the environment which with high temperature, wet and durty conditions. It is not suitable for the occasion which is in high speed and with strong impact load. Roller chain coupling should working with excellent lubrication and protection cover conditions.

The common chain coupling includes double roller chain coupling, single row roller chain coupling, tooth shape chain coupling, nylon chain coupling. Its scale is compact and its weight is light. But rooler chain coupling don’t have high requirement to installation precision.

Gernerally speaking, it is usually in long service life. Production line equipment for various kinds of frozen food and dehydrated vegetables should transport by stainless steel chain. Roller chains are widely applied to household, industrial and agricultural machinery, includes conveyor, drawing machine, printing machine, automobile, motorcycle and bicycle.

Common Heat Treatment Methods and Aging Treatment for Chains

Common Heat Treatment Methods and Aging Treatment for Chains

Heat treatment is a crucial process in chain manufacturing, significantly enhancing the strength, wear resistance, and durability of chains used in various applications. The most commonly used heat treatment methods include annealing, normalizing, quenching, tempering, carburizing, nitriding, carbonitriding, and boronizing. These processes help refine the microstructure of the chain components, improving their mechanical properties to withstand heavy loads and harsh operating conditions.

1. Common Heat Treatment Methods

• Annealing: The chain is heated to 30-50°C above Ac3, held at that temperature, and then slowly cooled inside the furnace. This process reduces internal stress, softens the material, and improves machinability.

• Normalization: Involves heating the chain components to above Ac3, followed by air cooling. It refines the grain structure, enhancing toughness and strength.

• Quenching: The chain is heated to above Ac3 or Ac1, then rapidly cooled in water, oil, or other cooling media. This results in a hardened microstructure with increased strength and wear resistance.

• Tempering: After quenching, the chain is reheated to a temperature below Ac1, held for a specified time, and then cooled to room temperature. This reduces brittleness and improves toughness, balancing hardness with flexibility.

• Carburizing: The surface of the chain is exposed to a carbon-rich environment at high temperatures, allowing carbon diffusion into the outer layer. This increases surface hardness while maintaining a tough core, ideal for wear-resistant applications.

• Nitriding: A nitrogen-rich environment is used to create a hard nitride layer on the surface, providing excellent wear resistance and corrosion protection.

• Carbonitriding: A combination of carburizing and nitriding, enhancing both hardness and wear resistance while offering improved surface durability.

• Boronizing: This process introduces boron atoms into the chain surface, forming extremely hard boride layers with superior abrasion and corrosion resistance.

2. Aging Treatment for Chains

Aging treatments stabilize the material’s internal structure, reducing residual stress and improving mechanical stability. There are two primary aging treatments:

• Natural Aging: The chain is stored at room temperature or under controlled environmental conditions for an extended period. Over time, the material undergoes structural changes, reducing residual stress and improving long-term performance.

• Artificial Aging: The chain is heated to an elevated temperature for a shorter period to accelerate the stabilization process. This method enhances dimensional stability and mechanical properties more quickly than natural aging.
  
  

Types of Chains That Undergo Heat Treatment and Aging Treatment

By utilizing advanced heat treatment and aging processes, manufacturers ensure that chains possess high strength, durability, and wear resistance, making them suitable for demanding applications in lifting, mining, industrial machinery, and conveyor systems.

1. Lifting Chains

Used in hoists, cranes, and material handling equipment, lifting chains require high tensile strength and fatigue resistance to handle heavy loads.

• Common Heat Treatments:

  • Quenching & Tempering (for high strength and toughness)

  • Surface Hardening (for wear resistance)

  • Carburizing (for a hard surface with a tough core)

• Aging Treatment:

  • Artificial aging to enhance long-term stability

2. Conveyor Chains

Used in automated production lines, mining conveyors, and industrial transport systems, conveyor chains require high wear resistance and smooth operation.

• Common Heat Treatments:

  • Nitriding (for improved wear and corrosion resistance)

  • Carbonitriding (for surface hardening and durability)

  • Induction Hardening (for localized wear resistance)

• Aging Treatment:

  • Artificial aging to ensure consistent performance in extreme conditions

3. Special Chains (Non-Standard Chains)

Customized chains for specific industries such as steel plants, food processing, escalators, and bottling plants require precise heat treatment for enhanced performance.

• Common Heat Treatments:

  • Boronizing (for extreme wear resistance in high-temperature environments)

  • Carburizing (for increased surface hardness)

  • Quenching & Tempering (for strength and fatigue resistance)

• Aging Treatment:

  • Natural aging to stabilize material properties

4. Mining & Heavy-Duty Chains

Used in mining, drilling, and construction machinery, these chains need to withstand abrasive environments and high impact loads.

• Common Heat Treatments:

  • Quenching & Tempering (for impact resistance)

  • Shot Peening (to improve fatigue strength)

  • Nitriding (for corrosion and wear resistance)

• Aging Treatment:

  • Artificial aging to refine the internal structure and improve durability

5. Motorcycle & Automotive Chains

Used in motorcycles, bicycles, and vehicle transmission systems, these chains require high strength, wear resistance, and smooth operation.

• Common Heat Treatments:

  • Induction Hardening (for specific high-wear areas)

  • Carburizing (for improved durability)

  • Shot Peening (to increase fatigue life)

• Aging Treatment:

  • Artificial aging to maintain long-term stability and reduce stress

6. Stainless Steel Chains

Used in food processing, pharmaceutical, and marine applications, stainless steel chains must resist corrosion, moisture, and high temperatures.

• Common Heat Treatments:

  • Nitriding (for wear and corrosion resistance)

  • Solution Annealing (to maintain strength and ductility)

  • Induction Hardening (for selective strengthening)

• Aging Treatment:

  • Natural aging for long-term stability in harsh environments

Conclusion

Different heat treatment and aging processes are applied based on the application and operating conditions of each chain type. Whether it's lifting chains for cranes, conveyor chains for production lines, or mining chains for extreme environments, these treatments ensure enhanced durability, strength, and performance.