Study on rolling process and heat treatment of high strength ship plate steel EH40
Means of a tensile test studied the mechanical properties and microstructure of the experimental steel plate under different rolling processes, Charpy impact test, optical microscopy and scanning electron microscopy (SEM). The results show that the optimum thermomechanical control process (TMCP) is a heating temperature of 1200 °C, the best rolling temperature of 1180 °C. The thickness of the ship plate steel was rolled from 170 mm to 40 mm in the recrystallization zone by multi-channel time deformation, and then the thickness was decreased from 40 mm to 15mm in the non-recrystallization zone, the temperature waiting for a range 980 °C ~ 920 °C, the finish rolling temperature of 830 °C. After rolling and being cooled rapidly by laminar cooling, the cooling rate is about 12 °C/s and the final target temperature of 600 °C, which maintains the best state of steels. All data of the experimental steels have accelerated the international level, high-strength ship plate EH40 has been successfully trialed and met the practical requirements, all of these provide a solid foundation for further scientific research.
Q. Shuai: Metall Inform Rev. 5 (2005) 5-8.
L. X. Niu: Wisco Tech, 44 (2006) 48-50.
S. Das, A. Ghosh, et al.: Scripta Mater, 48 (2003) 51-57.
H. Zhang, Y.T. Lei, J.S Wei: Steel Structure, 19 (2004) 38-40.
D.T Jiao: China Steel, 15 (2014) 18-20.
China Shipbuilding Industry Association, China Water Transport. 30 (2014) 36-39.
C.Y Zhang, Z.H Xu, S Gao: Baosteel Tech (2015) 18-22.
X.M Xiao, Y Peng, Y.H Lou, et al.: Chinese Journal of Mechanical Engineering, 49 (2013) 97-104.
R.M Wang: Wuhan University of Science and Technology, 2011.
Copyright (c) 2018 Chunquan Liu
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their published articles online (e.g., in institutional repositories or on their website, social networks like ResearchGate or Academia), as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Except where otherwise noted, the content on this site is licensed under a Creative Commons Attribution 4.0 International License.