Chains for pulp industry

De-icing conveyors

De-icing conveyors are among the biggest and the heaviest of all conveyors in a pulp factory. This is why it is important to pay special attention to materials and hardenings when choosing a chain for a de-icing conveyor.

Lapua Chains has worked for decades in collaboration with the leading machine manufacturers and end-users to develop our products. As a result, our de-icing conveyor chains are reliable and long-lasting.

Most of the chains are based on M and Y type conveyor chains. Usually the chains are equipped with different kinds of attachments or replacements as well as with post-lubrication holes. The lubrication gives the chain a longer lifecycle as well as increases its reliability.

APPLICATIONS

De-icing conveyors

CHAIN TYPES USED IN DE-ICING CONVEYORS

Y-chains, M630 chains

Drum and woodchip conveyor chains

Drum and chipper chains are typically similar to the chains in de-icing conveyors. Loads are usually smaller but the speeds used are notably higher. The attachments used differ from those used in de-icing conveyors.

When designing the chains we have accounted for the challenges that high speeds pose to large chains. We also recommend a post-lubrication model for drum and chipper chains.

APPLICATIONS

Drum unloading, chipper feeding

CHAIN TYPES USED IN DRUM UNLOADING AND CHIPPER FEEDING

Y-chains

Chains for bark and woodchip conveyors, and precipitation and waste conveyors

In bark and chip handling, paired chains with welded or bolted attachments are typically used. In precipitation conveyors, the attachments are also often equipped with rubber or plastic scrapers.

In these chains, a longer lifecycle can be achieved by choosing the right hardening and materials. If needed, chain joints can be equipped with rust-resistant parts.

APPLICATIONS

Bark and woodchip conveyors, precipitation conveyors, waste conveyors

CHAIN TYPES USED IN BARK AND WOODCHIP CONVEYORS

M-type paired chains with attachments

Slasher conveyor

Slasher conveyor

Slasher conveyors require sturdy basic chains equipped with large attachments.

To ensure that the slasher conveyor functions properly, it is essential for the chains to be subject to even wear. If they are worn out unevenly, the alignment of the attachments is affected, which puts it at risk of functional problems. Fully-hardened pins and bushes ensure that the chain wears out uniformly.

The durability and lifecycle of a chain is determined by the wear of both joints and side plates. Combining the chain with hardened side plates, for example, can slow down the wearing process. Unlike other manufacturers, Lapua Chains uses fully hardened side plates, thus ensuring that they wear evenly throughout the chain’s lifecycle.  

APPLICATIONS

Slasher conveyors

CHAIN TYPES USED IN SLASHER CONVEYORS

M- or A-type conveyor chains with welded attachments, also chains replacing profile chains