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Upgrade of Chain Conveyor for Corrosive Products

Upgrade of Chain Conveyor for Corrosive Products
31 Jul 2020  |

Our customer was struggling with the life of the chain inside their chain conveyors. The chain conveyors where transporting a by-product of crude oil processing and wearing extremely fast.

The wear was mainly due to the corrosive nature of the product and the strength of the chain installed. 

The corrosion was wearing the chain links and pins quite rapidly and the low chain strength lead to rapid elongation of the links. These 2 issues combined resulted in many chain breaks and a lot of production time loss to maintenance on the conveyors. 


We offered the 4B142HAD chain links with pins in AISI420 and circlips in AISI304. These pins had a higher resistance to corrosion and the HAD link is 33% stronger than the standard HA link. Because the link is through hardened, it remains quite strong in its core, even if the outer layer wears away. The chain solution was coupled with new sprocket segments made from Hardox 450 and treated to improve the corrosion resistance. 


The changes made to this chain have improved the life of the chain conveyor by at least 50%. These improvements are more substantial when the maintenance of the conveyor is more frequent. 

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4B Group is a leading manufacturer of components for bucket elevators, conveyors and monitoring equipment. 4B offers engineering solutions that improve the safety and efficiency of processing plants. With the world’s largest range of bucket...

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