Production of Directly Quenched High-Strength Hot-Rolled Strip Steels - Influence of Rolling and Cooling Conditions on Mechanical Properties and Flatness

Joachim Schöttler; Thorsten Maiwald; Gunnar Linke

doi:10.4028/www.scientific.net/MSF.854.29

Paper Titles

Effect of Parameters in the Physical Simulated Rough Rolling Stage on Microstructure Evaluation and Tensile Properties of a Bainitic Pipeline Steel
p.3

Development of Modern Steels for Strain Based Design Pipe Lines and Simulation Results
p.9

Influence of Hot Rolling Condition on the Final Microstructure of Non-Oriented Electrical Steel Fe-3.2 wt.% Si
p.16

On the Correlation between Microstructure Homogeneity and Formability in Two Multi Phase Steels Treated with Different Cooling Strategies
p.22

Production of Directly Quenched High-Strength Hot-Rolled Strip Steels - Influence of Rolling and Cooling Conditions on Mechanical Properties and Flatness
p.29

Material Aspects of Hot Rolling and Cooling Conditions for Strips from Martensitic Steel
p.35

Arvedi ESP Technology - The Hot Rolling of HS and AHS Thin Gauge Steel Strips
p.42

Substitution of Rare Earths in Magnesium Alloys
p.51

Substitution of Rare Earth Elements in Hot Rolled Magnesium Alloys with Improved Mechanical Properties
p.57

HomeMaterials Science ForumMaterials Science Forum Vol. 854Production of Directly Quenched High-Strength...

Production of Directly Quenched High-Strength Hot-Rolled Strip Steels - Influence of Rolling and Cooling Conditions on Mechanical Properties and Flatness

Abstract:

The production of hot-rolled sheets of high-strength and wear-resistant special structural steels by direct quenching from the rolling heat is a cost effective and energy-saving alternative to traditional production via downstream quenching the previously cut-to-length plates. Reaching the required strength and toughness parameters in combination with best flatness of the sheets requires strict compliance with the pre-set rolling and cooling conditions over the entire strip width. Using two high-strength low-alloyed steels, plant trials have been carried out to study the effect of the cooling conditions and the coiling temperature on mechanical properties, impact toughness and flatness of cut-to-length sheets made of hot-rolled strip. The results showed that by applying optimized cooling pattern and low coiling temperatures, high-strength steel sheets with outstanding mechanical properties and good flatness can be produced.

By email View Pdf

You have full access to the following eBook

Production and Further Processing of Flat Products

Read eBook

Info:

Periodical:

Materials Science Forum (Volume 854)

Pages:

29-34

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.854.29

Citation:

Cite this paper

Online since:

May 2016

Authors:

Joachim Schöttler, Thorsten Maiwald, Gunnar Linke

Keywords:

Direct Quenching, High-Strength Strip Steel, Hot Strip Mill, Impact Toughness, Martensite

Export:

RIS, BibTeX

Permissions:

Creative Commons CC BY 4.0

Citation:

References

[1] JMatPro® developed by Sente Software Ltd. http: /www. jmatpro. com.

Google Scholar

[2] X. Wu, Y. Wang, The Development of X120 Line Pipe Steel Hot Rolled Coil, AISTech 2013, Proceedings of the Iron & Steel Technology Conference, May 6 - 9, 2013, Pittsburgh, PA, US, pp.2165-2173.

Google Scholar

[3] H. Briunsma, Shape and Profile Throughout the Strip-Mill Processing Line, EUR 13628 EN (1992).

Google Scholar

[4] P. Gevers, H.W. Tamler, Internal Stress and Flatness Evolution after Hot-Strip Mill, EUR 19874 EN (2001).

Google Scholar

[5] E. Nikitenko, B.C. Gris, A Mechanism of Post-rolling Deterioration in Hot Band Flatness during Coiling, AISTech 2009, Proceedings of the Iron & Steel Technology Conference, May 4 - 7, 2009, St. Louis, MO, US, pp.107-111.

Google Scholar

[6] J. Sinha, Effects of Surface Roughness, Oxidation Level, and Liquid Subcooling on the Minimum Film Boiling Temperature, Experimental Heat Transfer: A Journal of Thermal Energy Generation, Transport, Storage, and Conversion, 16 (2003) 1, 45-60.

DOI: 10.1080/08916150390126478

Google Scholar

[7] S. Kraemer, A. Sprock, Efficient Strip Cooling to Meet the Requirements of Advanced Steel Grades, Millennium Steel 2014, pp.105-109.

Google Scholar