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Metals 2015, 5(2), 706-719; doi:10.3390/met5020706

Integral Steel Casting of Full Spade Rudder Trunk Carrier Housing for Supersized Container Vessels through Casting Process Engineering (Sekjin E&T)

1
Sekjin E&T Co., Ltd., Sinpyeong-dong 642-19, Saha-Gu, Busan 604-030, Korea
2
Graduate School of Mechanical and Precision Engineering, Pusan National University, San 30 Chang Jun-dong, Geum Jung-Gu, Busan 609-735, Korea
3
School of Mechanical Engineering, Pusan National University, San 30 Chang Jun-dong, Geum Jung-Gu, Busan 609-735, Korea
4
Department of Computer Science and Engineering, Pusan National University, San 30 Chang Jun-dong, Geum Jung-Gu, Busan 609-735, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Anders E. W. Jarfors
Received: 2 February 2015 / Revised: 16 April 2015 / Accepted: 27 April 2015 / Published: 30 April 2015
(This article belongs to the Special Issue Casting Alloy Design and Modification)
View Full-Text   |   Download PDF [1377 KB, uploaded 30 April 2015]   |  

Abstract

In casting steel for offshore construction, integral casted structures are superior to welded structures in terms of preventing fatigue cracks in the stress raisers. In this study, mold design and casting analysis were conducted for integral carrier housing. Casting simulation was used for predicting molten metal flow and solidification during carrier housing casting, as well as the hot spots and porosity of the designed runner, risers, riser laggings, and the chiller. These predictions were used for deriving the final carrier housing casting plan, and a prototype was fabricated accordingly. A chemical composition analysis was conducted using a specimen sampled from a section of the prototype; the analytically obtained chemical composition agreed with the chemical composition of the existing carrier housing. Tensile and Charpy impact tests were conducted for determining the mechanical material properties. Carrier housing product after normalizing (920 °C/4.5 h, air-cooling) has 371 MPa of yield strength, 582 MPa of tensile strength, 33.4% of elongation as well as 64 J (0 °C) of impact energy. View Full-Text
Keywords: carrier housing; casting steel; mold design; casting defects; mechanical properties carrier housing; casting steel; mold design; casting defects; mechanical properties
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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).

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MDPI and ACS Style

Kim, T.W.; Jin, C.K.; Jeong, I.K.; Lim, S.S.; Mun, J.C.; Kang, C.G.; Seo, H.Y.; Kim, J.D. Integral Steel Casting of Full Spade Rudder Trunk Carrier Housing for Supersized Container Vessels through Casting Process Engineering (Sekjin E&T). Metals 2015, 5, 706-719.

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