Transversal welds

Wear design > Wear > Protecting welds

Transversal welds

The front weld of a liner, which runs transverse to the flow of abrasive material, is susceptible to wear, increasing the risk of the entire plate breaking off quickly. When a weld becomes cracked or worn, small particles and dirt begin to accumulate between the liner plate and the floor structure. These particles act as a strong wedge, exerting pressure that gradually separates the liner plate from the floor, causing further cracking of the weld until the plate eventually falls off. To prevent this, it is crucial to regularly inspect and maintain the welds.

A damaged weld causes dirt to penetrate, separating the structure and liner.

Below are some conceptual suggestions for redirecting the flow of abrasive particles away from the weld. The figure shows the HAZ, with the blue fine line indicating the expected wear pattern. A wear bar is introduced at points D and F, acting as a sacrificial plate designed to increase the service life of the liner plates. Since the purpose of the sacrificial wear bar is solely to protect the weld and not to serve any other function, it can be used until it is completely worn down. New wear bars do not need to be installed until a new liner plate is required. These solutions can lead to an increase in service life for a set of liner plates by 50-100%.

Different approaches to protecting a weld that is transverse to the flow direction.

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