Abstract
	This article deals with analysis of welds-on quality carried out on traverse crane wheels. Researched wheels was made from material STN 42 2660. For the purpose of renovation three types of welding-on technology with various filling materials were used. On wheel after wearing was welded-on one interlayer by combination of additional materials wire A 106 with F 11 addition and two cover layers made by combination of wire A 508 with F 13 adition.  Wheel surface was hardened after welding-on to depth 3 mm. As a secondary technology was applied welds-on under addition where one interlayer made by combination of wire A 106 wire with F 11 adition.  Two cover layers were made by combination of wire RD 520 with   F 56 adition. Third welds-on technology was realized to face one layer by wire C 113 in inert atmosphere 80 % Ar + 20% CO2. Two cover layers was made by wire with self protect Lincore 40-O. On samples removed from renovated wheels was evaluated hardness and microhardness.  Properties of thus renovated traverse crane wheels were compared with the properties of new wheels with surface hardened layer. The welds-on were exposed to adhesive wearing whereabouts surface resistance was examined according to their weight loss. Influence of particular elements on the welds-on chemical composition was examined by EDX analyses. Surface resistance is influenced by material structure, its chemical composition and usage of suitable heat treatment of welds-on. Acquired results can contribute to welding-on renovation process optimization of traverse crane wheels, where it is possible to prolong traverse crane wheels operation lifespan by a suitable combination of filling materials, technologies and heat treatment of weld-on surfaces.