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Weld‐facing of equipment for the processing of rubber materials

In the process of preparing rubber for vulcanisation, some parts of the equipment, comminuting the material in question, are subject to intensive wear. Particularly high rates of wear occur in the processing of recycled rubber materials. In consequence of this, steel parts of the machines used have to be faced by layers of hard materials that are deposited on them by means of welding. A possible solution to the problem of building up a padding layer on the internal surface of equipment intended for the vulcanisation of rubber is proposed in this paper. The chemical composition of the materials used, the hardness of components of the layer's structure, and the metallographic examinations carried out, are described. Specimens intended for the examination were taken from the working parts of a devulcanisator manufactured in Kiev.