For Use at Low-temperature
When using conveyor chains at low-temperature such as in a fridge or within a cold environment, the following problems may possibly come about.
1) Minimal temperature brittleness
On the whole, a materials is embrittled at low-temperature and shock resistance is lowered. This phenomenon is known as low-temperature brittleness, plus the degree of embrittlement differs from material to material.
The support limit of the conveyor chain is determined by its specs.
2)Influence of freezing
At low-temperature, bending failure, roller rotation failure, repairing of chain, and so forth. could possibly be brought about through the freezing of penetrated water or deposited frost inside the clearance involving pins and bushings, bushings and rollers or inner plates and outer plates. These circumstances cause an overload to act on the chain and drive, diminishing the lifestyle on the chain.
To avoid freezing, generally, it is suggested to fill the clearances that has a low-temperature lubricant appropriate to the service temperature to avoid water, frost, etc. from penetrating the respective portions from the chain. For lubrication, a silicon primarily based grease is suggested.
For Use at High-temperature
Chains power is diminished by high-temperature atmosphere, direct conveying of high-temperature loads, or radiated heat, etc. The service limit at high-temperature depends not about the temperature with the support surroundings however the temperature and materials of your chain body.
Following conditions may perhaps happen when chains are applied at high-temperature:
one) High temperature brittleness and fracture by lowered hardness of heat treated materials
two) Brittleness brought on by carbide precipitation
three) Abnormal dress in by scale
4) Fatigue fracture caused by repeated thermal shock (cooling and growth)
5) Abnormal put on on account of an increase within the coefficient of friction
six) Creep fracture
7) Fracture as a result of thermal fatigue of welded area
8) Effects brought about by thermal expansion
?Stiff back links and rotation failure due to decreased clearance ?Fatigue fracture as a consequence of lowered fitting force
9）Lubrication failure and stiff hyperlinks as a consequence of deterioration and carbonization of lubricating oil
Grease outstanding in heat resistance include these depending on silicon, graphite or molybdenum disulfide.
For use at high-temperature, high-temperature resistance bearings and stainless steel bearings are advised.