Influence of Steel Structure on Machinability by Abrasive Water Jet
| Autor: | Marek Sadílek, Petra Váňová, Irena M. Hlaváčová, Štefan Szumilo, Martin Tyč |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Materials science Carbon steel Machinability Young's modulus 02 engineering and technology Surface finish engineering.material lcsh:Technology symbols.namesake 020901 industrial engineering & automation Surface roughness General Materials Science Tempering abrasive water jet cutting Composite material lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 heat treatment lcsh:T Communication Abrasive 021001 nanoscience & nanotechnology Microstructure hardness tensile strength lcsh:TA1-2040 surface roughness symbols engineering lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 13, Iss 4424, p 4424 (2020) Materials |
| ISSN: | 1996-1944 |
| Popis: | Although the abrasive waterjet (AWJ) has been widely used for steel cutting for decades and there are hundreds of research papers or even books dealing with this technology, relatively little is known about the relation between the steel microstructure and the AWJ cutting efficiency. The steel microstructure can be significantly affected by heat treatment. Three different steel grades, carbon steel C45, micro-alloyed steel 37MnSi5 and low-alloy steel 30CrV9, were subjected to four different types of heat treatment: normalization annealing, soft annealing, quenching and quenching followed by tempering. Then, they were cut by an abrasive water jet, while identical cutting parameters were applied. The relations between the mechanical characteristics of heat-treated steels and the surface roughness parameters Ra, Rz and RSm were studied. A comparison of changes in the surface roughness parameters and Young modulus variation led to the conclusion that the modulus was not significantly responsible for the surface roughness. The changes of RSm did not prove any correlation to either the mechanical characteristics or the visible microstructure dimensions. The homogeneity of the steel microstructure appeared to be the most important factor for the cutting quality; the higher the difference in the hardness of the structural components in the inhomogeneous microstructure was, the higher were the roughness values. A more complex measurement and critical evaluation of the declination angle measurement compared to the surface roughness measurement are planned in future research. Web of Science 13 19 art. no. 4424 |
| Databáze: | OpenAIRE |
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