Next Article in Journal
Wear Simulation of Ceramic-on-Crosslinked Polyethylene Hip Prostheses: A New Non-Oxide Silicon Nitride versus the Gold Standard Composite Oxide Ceramic Femoral Heads
Previous Article in Journal
Polyamide Surface Layer Nano-Indentation and Thermal Properties Modified by Irradiation
Previous Article in Special Issue
Application of a Prototype Thermoplastic Treatment Line in Order to Design a Thermal Treatment Process of Forgings with the Use of the Heat from the Forging Process
Open AccessArticle

Feasibility of Reduced Ingot Hot-Top Height for the Cost-Effective Forging of Heavy Steel Ingots

1
Research and Development Center, Taewoong Co., Ltd., Noksansandan 27-ro, Gangseo-gu, Busan 46751, Korea
2
Graduate School of Convergence Science, Pusan National University, Busandaehak-ro 63, Geumjeong-gu, Busan 46241, Korea
3
School of Mechanical Engineering, Pusan National University, Busandaehak-ro 63, Geumjeong-gu, Busan 46241, Korea
*
Author to whom correspondence should be addressed.
Materials 2020, 13(13), 2916; https://doi.org/10.3390/ma13132916
Received: 5 June 2020 / Revised: 22 June 2020 / Accepted: 26 June 2020 / Published: 29 June 2020
(This article belongs to the Special Issue Forging Processes of Materials)
Feasibility studies have been performed on ingots with reduced hot-top heights for the cost-effective hot forging of heavy ingots. The quality of the heavy ingots is generally affected by internal voids, which have been known to be accompanied by inclusions and segregation. To guarantee the expected mechanical performance of the forged products, these voids should be closed and eliminated during the hot open die forging process. Hence, to effectively control the internal voids, the optimum hot-top height and forging schedules need to be determined. In order to improve the utilization ratio of ingots, the ingot hot-top height needs to be minimized. To investigate the effect of the reduced hot-top height on the forged products, shaft and bar products have been manufactured via hot forging of ingots having various hot-top heights. From the operational results, the present work suggests effective forging processes to produce acceptable shaft and bar products using ingots having reduced hot tops. The mechanical properties of shop-floor products manufactured from ingots with reduced hot tops have also been measured and compared with those of conventional ingot products. View Full-Text
Keywords: forging; heavy ingot; hot top; shrinkage porosity; main shaft; bar forging; heavy ingot; hot top; shrinkage porosity; main shaft; bar
Show Figures

Figure 1

MDPI and ACS Style

Kim, N.Y.; Ko, D.-C.; Kim, Y.; Han, S.W.; Oh, I.Y.; Moon, Y.H. Feasibility of Reduced Ingot Hot-Top Height for the Cost-Effective Forging of Heavy Steel Ingots. Materials 2020, 13, 2916.

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.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop