| Abstract [eng] |
This Master’s degree thesis covers analysis, research and economical calculations regarding wear-resistant steel brand HARDOX. Analysis of possible blank production methods is described and possibilities of production using laser, plasma, gas or water-abrasive jet cutting machines are described. Extensive research of heat affected zones is carried due to the fact, that most of the cutting methods are thermal and, therefore, change internal microstructure of steel. Research is carried out for thicknesses from 5 to 15mm, specimens are produced using different cutting machines. Microindentation test results show changing hardness from cutting edge to inside. Summary graphs enable to forecast size of heat affected zone for other thicknesses, which have not been tested. Example of economical calculations is created using simple real-life part as basis. Prices of different materials, production methods are calculated along with price calculation of heat affected zone. Same procedures can be applied to other parts as well to determine economical background and discover most beneficial production method. |
