For Use at Low-temperature
When making use of conveyor chains at low-temperature such as in the fridge or inside a cold environment, the next conditions may perhaps take place.
1) Minimal temperature brittleness
Normally, a materials is embrittled at low-temperature and shock resistance is lowered. This phenomenon is called low-temperature brittleness, as well as the degree of embrittlement differs from materials to materials.
The services limit of the conveyor chain is determined by its specifications.
2)Influence of freezing
At low-temperature, bending failure, roller rotation failure, repairing of chain, and so on. may very well be brought about from 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 problems result in an overload to act about the chain and drive, diminishing the daily life on the chain.
To stop freezing, generally, it’s encouraged to fill the clearances which has a low-temperature lubricant suitable on the service temperature to avoid water, frost, etc. from penetrating the respective portions on the chain. For lubrication, a silicon based mostly grease is advisable.
For Use at High-temperature
Chains strength 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 of your service environment but the temperature and materials on the chain body.
Following conditions might arise when chains are utilized at high-temperature:
one) High temperature brittleness and fracture by lowered hardness of heat treated materials
two) Brittleness brought on by carbide precipitation
3) Abnormal wear by scale
four) Fatigue fracture induced by repeated thermal shock (cooling and growth)
five) Abnormal dress in on account of an increase while in the coefficient of friction
6) Creep fracture
seven) Fracture as a result of thermal fatigue of welded spot
eight) Effects brought about by thermal growth
?Stiff links and rotation failure resulting from decreased clearance ?Fatigue fracture because of lowered fitting force
9）Lubrication failure and stiff back links as a consequence of deterioration and carbonization of lubricating oil
Grease great in heat resistance include people based upon silicon, graphite or molybdenum disulfide.
For use at high-temperature, high-temperature resistance bearings and stainless steel bearings are proposed.