Analysis of tool wear patterns in rough turning of chromium hardfacing material

Abstract

Weld cladding represents one of the major remanufacturing technology employed in renovation of the worn machine tool components used in steel industry. Welded layer deposited on roller, originating from hot rolling mill improve its properties such as wear resistance, corrosion resistance and oxidation resistance in elevated temperatures. Machining processes must by applied on the part after the process of deposition to achieve desired dimensional accuracy and required surface integrity of the final parts. Dynamic mechanical loads acting on a cutting tool due to variable chip cross-section, nature of carbides, their size and distribution makes rough machining of martensitic materials difficult to cut, especially with the respect to rapid tool wear. This paper discusses and summarizes various cutting tool wear patterns occurring in turning of high content chromium hardfacing layers. The results show that tool edge and tip breakage, as well as flank wear are typicall features of failured carbide tool under the consideration.