For Use at Low-temperature
When using conveyor chains at low-temperature such as within a fridge or in a cold environment, the next problems may perhaps happen.
one) Reduced temperature brittleness
Generally, a material is embrittled at low-temperature and shock resistance is lowered. This phenomenon is named low-temperature brittleness, as well as the degree of embrittlement differs from materials to materials.
The support restrict of the conveyor chain depends on its specifications.
2)Influence of freezing
At low-temperature, bending failure, roller rotation failure, repairing of chain, and so forth. may be triggered by the freezing of penetrated water or deposited frost from the clearance concerning pins and bushings, bushings and rollers or inner plates and outer plates. These problems bring about an overload to act on the chain and drive, diminishing the lifestyle of the chain.
To stop freezing, normally, it truly is advisable to fill the clearances by using a low-temperature lubricant appropriate towards the services temperature to avoid water, frost, and so on. from penetrating the respective portions from the chain. For lubrication, a silicon primarily based grease is advisable.
For Use at High-temperature
Chains power is diminished by high-temperature environment, direct conveying of high-temperature loads, or radiated heat, and so forth. The services limit at high-temperature depends not to the temperature with the services natural environment however the temperature and materials with the chain entire body.
Following problems may possibly happen when chains are used at high-temperature:
one) High temperature brittleness and fracture by lowered hardness of heat treated material
two) Brittleness brought on by carbide precipitation
three) Abnormal wear by scale
4) Fatigue fracture brought about by repeated thermal shock (cooling and growth)
five) Abnormal put on as a consequence of a rise within the coefficient of friction
six) Creep fracture
7) Fracture because of thermal fatigue of welded area
8) Effects triggered by thermal growth
?Stiff links and rotation failure due to decreased clearance ?Fatigue fracture as a result of lowered fitting force
9）Lubrication failure and stiff backlinks as a result of deterioration and carbonization of lubricating oil
Grease fantastic in heat resistance consist of individuals based on silicon, graphite or molybdenum disulfide.
For use at high-temperature, high-temperature resistance bearings and stainless steel bearings are advised.