Effect Study of Thermal Cutting Methods on the Edge’s Microstructure of High-Strength Steel Grade S700MC

Ivan A. Ilin; Anna A. Krasnoperova; Evgenii A. Sirotkin

doi:10.4028/www.scientific.net/MSF.946.928

Paper Titles

Research of Laser Welding of Thin-Sheet Structural Steels by Pulsed Laser Radiation
p.901

The Comparison Research of Plasma Surface Hardening of 34CrNiMo6 Steel Produced on Direct and Reversed Polarity Current
p.906

Research on Welding and Processing Behavior of Electrodes and Features of their Application in "Wet" Underwater Arc Welding
p.913

Kinetics of Residual Stresses in a Welded Frameless Tubular Node
p.921

Effect Study of Thermal Cutting Methods on the Edge’s Microstructure of High-Strength Steel Grade S700MC
p.928

Dependence of Cold Cracks Formation from the Heat Input when Welding of High Strength Steel with Yield Strength of 500 MPa
p.934

Welding of Valve Steels of Different-Sized Cross Sections
p.939

Research on Plasma Electric Arc Granulation Processes of the Ural Region Mineral Raw Materials to Welding Materials for Submerged Arc Welding
p.945

Austenite Decomposition Kinetics in Laser-Hybrid Welding of Steel of Strength Class K52
p.950

HomeMaterials Science ForumMaterials Science Forum Vol. 946Effect Study of Thermal Cutting Methods on the...

Effect Study of Thermal Cutting Methods on the Edge’s Microstructure of High-Strength Steel Grade S700MC

Abstract:

The paper presents the results of metallographic studies of laser and plasma cutting methods of high-strength steel for the purpose of its application for the preparation of sample edges without subsequent machining. It is shown that as a result of the thermal and physical-chemical processes in heat affected one (HAZ), there is a change in the phase and chemical composition of the metal. The depth of the HAZ is changed from 261 μm to 337 μm. The maximum hardness at the cutting edge is 410 HV₁₀. On the surface after the laser cutting there is an oxidized layer of metal, saturated with oxygen, nitrogen and other gases as a result of contact with the oxygen jet and the surrounding air; its thickness is hundredths or even thousandths of a millimeter. A feature of the plasma cutting method is the formation of a deeper oxide layer on the surface with a thickness of 9...14 μm, in contrast to the laser cutting method. The analysis of existing research to improve the technology of repair welding of low-carbon steel is performed. The obtained results can be used in the development of high-strength steel grades welding technology in terms of preparation of edges for welding using thermal cutting methods, which are currently quite conservative.

You might also be interested in these eBooks

Materials Science and Metallurgical Technology

View Preview

Info:

Periodical:

Materials Science Forum (Volume 946)

Pages:

928-933

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.946.928

Citation:

Cite this paper

Online since:

February 2019

Authors:

Ivan A. Ilin*, Anna A. Krasnoperova, Evgenii A. Sirotkin

Keywords:

Edge, Hardness, High-Strength Steel, Laze Cutting, Microstructure, Plasma Cutting

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] A.K. Tingaev, E.I. Elsukov, Study of the effect of welded joint repairs number on its mechanical properties, Bulletin of SUSU. Series Metallurgy. 14(2) (2014) 41–45.

Google Scholar

[2] B.N. Arzamasov, V.I. Makarova, G.G. Mukhin, and others; edited by B.N. Arzamasova, G.G. Mukhin, Materials: textbook, MSTU named after N.E. Bauman, (2004).

Google Scholar

[3] V.D. Sadovskii, V. Schastlivtsev, T.I. Tabatchikova, I.L. Yakovleva, Laser heating and structure of steel, Sverdlovsk: Ural branch of the Academy of Sciences of SSSR, (1989).

Google Scholar

[4] I.G. Shirshov, V.N. Kotikov, Plasma cutting. Leningrad, Machine Building, (1987).

Google Scholar

[5] M. Harničárová, et al. Comparison of different material cutting technologies in terms of their impact on the cutting quality of structural steel. Technical Gazette, 17, 3(2010) 371-376.

Google Scholar

[6] M.S. Węglowski, T. Pfeifer, Influence of cutting technology on properties of the cut edges, Advances in Manufacturing Science and Technology. 38(2) (2014) 63-73.

DOI: 10.2478/amst-2014-0011

Google Scholar

[7] A.K. Tingaev, M.A. Ivanov, A.M. Ulanov, Evaluation of Influence of Thermal Methods of Metal Separation Cutting on Welding Quality, Solid State Phenomena, 265 (2017) 755-761.

DOI: 10.4028/www.scientific.net/ssp.265.755

Google Scholar