DOI: https://doi.org/10.20535/2521-1943.2018.84.134303

Forming of plates and disks samples from austenitic stainless steel, manganese carbon steel and low carbon steel using laser heating

O. Kaglyak, A. Lutay, O. Goncharuk, L. Golovko

Abstract


The aim of research was investigate possibility and specific of laser forming of austenitic stainless steel and manganese carbon steel, make results comparison between specimens treated by pressure and laser formed specimens. In this research the mechanisms of laser forming were analyzed. Thermal gradient mechanism (TGM) is the most suitable and the most effective. The recommendation of treatment condition based on results of experimental investigation presented in this paper. The value of deformation was proportional to the number of scans and inversely proportional to the scanning speed for both carbon and stainless steel specimens. While treating carbon steel the effect of ‘post deformation’ can occur, it does can have the direction, which matches with the direction of main deformation or can be opposite. This effect can be explained by polymorphic transformation which occurs in carbon steels during heating-cooling cycle. Stability of laser formed designs was under investigation. Was found, that during laser forming of discs, to achieve uniform deformation, should use uniform heating conditions created by closed circuit heating area.

Keywords


laser forming; sheet material; deformation; thermal ways of forming; area of thermal impact; forming

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References


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GOST Style Citations


  1. Thomsen A.N., Endelt B. and Kristiansen M. “A new method for calculating the error term used in 2D feedback control of laser forming”, Nordic laser materials processing conference, NOLAMP 16 Physics procedia. 2017. ‑ 89, 148-155.
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  3. Chakraborty S., More H., Racherla V. and Nath A. “Modification of bent angle of mechanically formed stainless steel sheets by laser forming”, Journal of Materials Processing Technology. – 2015, 222, pp.128–141.
  4. Yau C.L., Chan K.C., Lee W.B. “A new analytical model for laser bending”, Laser Assisted Net Shape Engineering 2, Proceedings of the LANE’97. – 1997. ‑ Vol. 2. pp. 357–366.
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  9. Arnet H. and Vollertsen F. “Extending laser bending for the generation of convex shapes”, Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture. – 1995. ‑ 209, pp. 433–442.
  10. Cheng J. and Yao Y. “Microstructure Integrated Modeling of Multiscan Laser Forming”, Journal of Manufacturing Science and Engineering. – 2002. ‑ Vol. 124, pp. 379-387.
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