The influence of technological parameters on the bead geometry in the manufacture of parts by laser metal deposition
| Autor: | A. V. Dubrov, Y. N. Zavalov, I. M. Ivanov, V. D. Dubrov |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 1396:012046 |
| ISSN: | 1742-6596 1742-6588 |
| Popis: | The dependences of geometric characteristics of single tracks obtained by laser deposition of austenitic steel powder on the shift of the laser beam focus and the distance from the nozzle to the substrate at different values of mass flow and scanning speed are investigated. It is shown that the characteristic value of the track height decreases from 900 to 700 microns with a decrease in the beam size by half at a powder flow rate of 8.4 g/min and a speed of 350 mm/min, decreases from 1100 to 900 microns at a flow rate of 15.6 g/min, and increases by 30-50% with an increase in flow rate by 2.3 times. The ratio of height to width (shape factor) decreases with the growth of the scanning speed from about 0.7 to 0.4 at a flow rate of 15.6 g/min and to 0.25 at a flow rate of 8.5 g/min. Process performance scaling parameters are defined. The results obtained make it possible to optimize the technological parameters of the laser metal deposition process. |
| Databáze: | OpenAIRE |
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