Product Description
Industry heavy duty injection molding POM-C Derlin Acetal plastic flexible transmission convey leaf chain
POM (Polyformaldehyde)
POM (Full-name: Polyformaldehyde), is a engineering plastics of non-side-chain, high density, high crystalline and linear polymer, which is praised “Plastic Steel”, and has comprehensive excellent performances, such as: wear-resistance, high hardness, anti-impregnant, good rigidity (Tensile modulus of elasticity), chemical stability, isolation resistance and dimensional stability. POM has widely applied in Automobile industries, electronic and electric products, commodity, pipeline & fittings, exact apparatus and so on, which can be instead of the bronze, Zinc, tin and other metals.
Except POM-H, is often copolymerized with ethylene oxide together, in order to avoid the melting of POM material in the high temperature. POM-H has the better performances than POM-C in its high crystalline, mechanical strength and rigidity. And POM-C has the better performances than POM-H in its low melting point, temperature stability, fluxion characteristic and machining capability.
Father more, POM-H+PTFE, which is made from the Delrin POM Resin that maxed Teflon fiber symmetrically, has the low co-efficient of frication, good lubrication, wear-resistance, non-creepage resistance.
Automobile industries: POM has a large application in car industries, because the mechanical parts made by POM, which has the advantages of high mechanical strength, high hardness, good wear-resistance, low co-efficient of friction, easy to maintain, reducing cost and so on, can be used in cars instead of coppery half stalk and planet gear. It not only saving copper materials, but also improving service life. At the engine fuel system, components for hose valves and case cover of radiator, cooling fluid’s standby case, water valve, oil box’ cover, pump impeller, shell of gasification machine and accelerator pedal and so on.
Electronic and electric Industries: because of its lower power consuming, high dielectric strength and insulation resistance and electronic arc resistance, POM has widely applied in electronic and electric Industries, such as: shell of electronic spanner, shell of electronic scissors, shell of coal drilling machine ,handle of switch, parts also for phone, wireless recorder, video tape recorder, television, computer, electrograph, calculagraph, bracket of recorder tape and so on.
Agricultural machine: part of manual sprayer, joint and transport part of seeder, parts of milk machine, shell of irrigation and drainage, valve, joint and bush of water and so on.
Other field:
Pharmacy & packing Machine: transporting screw, planet gear, gear bar, chain wheel and cushion bar and so on.
Construction industries: water tap, window frame, wash pot, water tank, pulley for portiere, shell of water meter and tie-in of water pipe.
Color:White,Black,Natural,Rice Yellow brown and so on.
Size:1000X2000X(Thickness:1-200mm),1220X2440X(Thickness:1-200mm)
600X1200X(Thickness:1-200mm)
Data Sheet of POM
| Property | Item No. | Unit | POM-C | POM-H | POM-H+PTFE | |
| Mechanical Properties | 1 | Density | g/cm3 | 1.41 | 1.43 | 1.50 |
| 2 | Water absorption(23ºC in air) | % | 0.20 | 0.20 | 0.17 | |
| 3 | Tensile strength | MPa | 68 | 78 | 55 | |
| 4 | Tensile strain at break | % | 35 | 35 | 10 | |
| 5 | Compressive stress(at 2%nominal strain) | MPa | 35 | 40 | 37 | |
| 6 | Charpy impact strength (unnotched) | KJ/m2 | ≥150 | ≥200 | ≥30 | |
| 7 | Charpy impact strength (notched) | KJ/m2 | 7 | 10 | 3 | |
| 8 | Tensile modulus of elasticity | MPa | 3100 | 3600 | 3200 | |
| 9 | Ball indentation hardness | N/mm2 | 140 | 160 | 140 | |
| 10 | Rockwell hardness | – | M84 | M88 | M84 | |
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| Material: | Plastic |
|---|---|
| Structure: | Leaf Chain |
| Surface Treatment: | Polishing |
| Chain Size: | 1/2"*3/32" |
| Feature: | Fire Resistant, Heat Resistant |
| Shape: | Sheet\Board\Rod\Plate\Rod\Bar\Strips\Shaped Parts |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do leaf chains perform in high-speed lifting operations?
Leaf chains are generally not recommended for high-speed lifting operations due to their design and construction. While leaf chains excel in heavy-duty and slow-speed applications, they may encounter challenges when used in high-speed lifting scenarios. Here are some factors to consider:
- Flexibility: Leaf chains consist of interconnected links with little flexibility between them. At high speeds, this lack of flexibility can lead to increased vibration and stress on the chain, potentially causing premature wear and fatigue.
- Dynamic Loading: High-speed lifting involves rapid changes in load and direction. Leaf chains may not handle dynamic loading as well as other chain types, which could compromise the safety and reliability of the lifting operation.
- Wear and Heat: The higher the speed, the more friction and heat are generated within the chain. This can accelerate wear and reduce the chain’s lifespan, leading to more frequent maintenance and replacement.
- Alternate Options: For high-speed lifting applications, roller chains or other types of high-speed lifting chains are more commonly used. Roller chains have better flexibility and are specifically designed to handle dynamic loading and high-speed operations.
It’s essential to carefully consider the specific requirements of the lifting operation and consult with chain manufacturers or lifting equipment experts to choose the most appropriate chain type. While leaf chains are reliable and robust for many lifting tasks, high-speed lifting is one area where alternative chain types may be more suitable for optimal performance and safety.
Can leaf chains be used in telescopic cranes and mobile cranes?
Yes, leaf chains can be used in telescopic cranes and mobile cranes for various lifting and hoisting applications. These types of cranes often require robust and reliable lifting components, and leaf chains are well-suited for these demanding tasks.
Here’s why leaf chains are suitable for use in telescopic and mobile cranes:
- High Strength: Leaf chains are designed to provide high tensile strength, making them capable of handling heavy loads typically encountered in crane operations.
- Flexibility: Telescopic cranes require chains that can handle both the extension and retraction of the boom. Leaf chains offer flexibility and can accommodate the varying lengths of the telescopic sections.
- Durability: Mobile cranes operate in diverse environments, and leaf chains made from high-quality alloy steel with appropriate surface treatments can withstand harsh conditions and resist wear and tear.
- Reliability: Leaf chains are known for their reliability and resistance to fatigue, ensuring smooth and consistent operation during the crane’s lifetime.
- Cost-Effective: Leaf chains offer a cost-effective solution for heavy-duty lifting applications, making them a preferred choice for many crane manufacturers and operators.
When using leaf chains in telescopic and mobile cranes, proper maintenance and regular inspections are essential to ensure safe and efficient crane operation. Regular lubrication, monitoring for signs of wear, and addressing any issues promptly will help extend the life of the leaf chains and contribute to overall crane safety.
It’s important to follow the manufacturer’s guidelines and recommendations for the selection, installation, and maintenance of leaf chains in telescopic and mobile crane applications to optimize performance and ensure the safety of crane operators and nearby personnel.
editor by CX 2024-04-15