Application of overlay materials for reducing abrasive wear
2015
Cieslar, J., Advanced Technical Group, s.r.o, Prague (Czech Republic) | Brozek, M., Czech Univ. of Life Sciences, Prague (Czech Republic)
Nowadays, the quickly developed sophisticated industrial sectors have made considerable demands on the quality of applicable parts. The current lifecycle of the machine is determined by a combination of the quality of the used parts and by new materials, which will better satisfy the requirements of various operational conditions. Overall lifecycle of the structure is mainly determined by the applied materials, eventually by their replacement, which brings better values to their users. The key benefit of overlay welding is relatively high increase in resistance to abrasive wear. The results of experimental measurements have confirmed the hypothesis of increased resistance to abrasive wear with increasing the quality of the applied overlay. The experimental evaluation of material resistance to abrasive wear was performed by the equipment with fixed grinding particles and rotational motion. Abrasive wear was conducted in accordance with well-respected Czech national standard CSN 01 5084. A similar standard is ASTM G 132. For comparison, measurement of overall macro hardness was also conducted by the HV method. The essential influence on mechanical properties of materials has their metallography structure. Therefore, this paper also includes description of metallography of the applied overlaid materials. All overlaid materials are compared with reference standard made of steel S235JR.
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