Next Article in Journal
Effect of the Parameters of Semi-Solid Processing on the Elimination of Sharp-Edged Primary Chromium Carbides from Tool Steel
Previous Article in Journal
Using the Multi-Response Method with Desirability Functions to Optimize the Zinc Electroplating of Steel Screws
Previous Article in Special Issue
Management of Lime in Steel
Article Menu

Export Article

Open AccessArticle
Metals 2018, 8(9), 712; https://doi.org/10.3390/met8090712

Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting

1,2,3
,
2,3
,
2,3,* , 2,3
and
2,3
1
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2
North China University of Science and Technology, Tangshan 063210, Hebei, China
3
Hebei Engineering Research Center of High Quality Steel Continuous Casting, Tangshan 063009, Hebei, China
*
Author to whom correspondence should be addressed.
Received: 8 August 2018 / Revised: 5 September 2018 / Accepted: 9 September 2018 / Published: 11 September 2018
(This article belongs to the Special Issue 5th UK-China Steel Research Forum)
Full-Text   |   PDF [7268 KB, uploaded 11 September 2018]   |  

Abstract

Surface cracking seriously affects the quality of beam blanks, a relatively new blank in the continuous casting in China. In order to study the mechanism of the initiation and propagation of surface cracks, this study established a 2D micro-segmented model of the solidification process for a beam blank in the mold, with a user subroutine DFLUX written in Fortran. Using a contact algorithm, the stress in the shell of the beam was analyzed considering the mechanical properties of the material (Q235B), thermal stress, surface friction force and ferrostatic pressure. The results showed that at the center of the web, surface longitudinal cracks were most likely to initiate at a height of 180 mm from the meniscus; at the fillet, surface longitudinal cracks were most likely to initiate at a height of 200 mm from the meniscus. Moreover, the casting speed showed a greater effect on surface crack initiation than the pouring temperature did. This study reveals the cause of longitudinal crack initiation, and the most likely positions of cracks on the strand. Thus, it is instructive for controlling surface cracks in production. View Full-Text
Keywords: near net shapes; continuous casting; finite element modeling; temperature distribution; stress distribution; heat transfer near net shapes; continuous casting; finite element modeling; temperature distribution; stress distribution; heat transfer
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yang, G.; Zhu, L.; Chen, W.; Yu, X.; He, B. Initiation of Surface Cracks on Beam Blank in the Mold during Continuous Casting. Metals 2018, 8, 712.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top