January 12, 2021

For Use at Low-temperature
When making use of conveyor chains at low-temperature such as in the refrigerator or in the cold environment, the following circumstances may well happen.
1) Lower temperature brittleness
Usually, a material is embrittled at low-temperature and shock resistance is lowered. This phenomenon is known as low-temperature brittleness, and also the degree of embrittlement differs from materials to material.
The support restrict of a conveyor chain depends on its specifications.
2)Influence of freezing
At low-temperature, bending failure, roller rotation failure, fixing of chain, and so forth. might be triggered by the freezing of penetrated water or deposited frost from the clearance amongst pins and bushings, bushings and rollers or inner plates and outer plates. These conditions result in an overload to act over the chain and drive, diminishing the daily life with the chain.
To avoid freezing, generally, it truly is proposed to fill the clearances that has a low-temperature lubricant ideal towards the service temperature to avoid water, frost, and so forth. from penetrating the respective portions in the chain. For lubrication, a silicon based mostly grease is proposed.
For Use at High-temperature
Chains strength is diminished by high-temperature ambiance, direct conveying of high-temperature loads, or radiated heat, and so on. The support restrict at high-temperature depends not to the temperature with the service atmosphere however the temperature and material in the chain body.
Following problems may well arise when chains are utilised at high-temperature:
1) High temperature brittleness and fracture by lowered hardness of heat handled material
two) Brittleness triggered by carbide precipitation
three) Abnormal wear by scale
four) Fatigue fracture induced by repeated thermal shock (cooling and growth)
five) Abnormal put on resulting from an increase within the coefficient of friction
six) Creep fracture
seven) Fracture because of thermal fatigue of welded spot
8) Effects induced by thermal expansion
?Stiff backlinks and rotation failure due to decreased clearance ?Fatigue fracture on account of lowered fitting force
9)Lubrication failure and stiff backlinks on account of deterioration and carbonization of lubricating oil
Grease fantastic in heat resistance incorporate those based upon silicon, graphite or molybdenum disulfide.
For use at high-temperature, high-temperature resistance bearings and stainless steel bearings are proposed.