Design of a Composite Roll with Internal Cooling Channels for Twin-Roll Casting

2013 ◽  
Vol 765 ◽  
pp. 331-335 ◽  
Author(s):  
Jong Jin Park
Keyword(s):  
Finite Element Analysis ◽  
Copper Alloy ◽  
Cooling Water ◽  
Internal Cooling ◽  
Element Analysis ◽  
Twin Roll Casting ◽  
Cooling Channels ◽  
Steel Core ◽  
Roll Casting ◽  
Twin Roll

In twin-roll casting, the melt is cooled, solidified and rolled to a specific thickness only by the rolls and consequently a lot of heat is transferred from the melt to the rolls through the melt/roll interface. In a composite roll, consisting of a steel core and a copper-alloy sleeve, the heat is finally removed by cooling water flowing through internal cooling channels. In the present study, design of the channels was improved using finite-element analysis in the aspects of structural as well as fatigue strengths.

Design of Melt-Ejection Nozzle in Horizontal Twin-Roll Casting of Al-1100 by Finite-Element Analysis

2013 ◽  
Vol 746 ◽  
pp. 543-547 ◽  
Author(s):  
Jong Jin Park
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Light Metals ◽  
Melt Flow ◽  
Element Analysis ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Roll Gap ◽  
Twin Roll

Horizontal twin-roll casting is utilized to produce thin strips of light metals, suchas aluminum or magnesium alloys. However, since the melt flow in the roll gap is asymmetric due to the gravity, microstructure distributions become asymmetric resulting in uneven mechanical properties. In the present investigation, the nozzle for ejecting the melt of Al-1100 was designed and improved for the melt flow to be symmetric by finite element analysis.

Finite-Element Analysis of Melt Flow in a Vertical Twin-Roll Casting

2012 ◽  
Vol 217-219 ◽  
pp. 1440-1443
Author(s):  
Jong Jin Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Twin Roll Casting ◽  
Solid Deformation ◽  
Roll Casting ◽  
Metal Sheets ◽  
Complex Phenomena ◽  
Twin Roll ◽  
Economical Process

Twin-roll casting is an efficient and economical process to fabricate metal sheets since it combines solidification and rolling in one process. However, this process requires a careful control because several phenomena, such as heat transfer, solidification, fluid flow and solid deformation, occur simultaneously. In the present study, a rigid-thermo-viscoplastic finite-element analysis was utilized to understand these complex phenomena occurring in a vertical twin-roll casting of an aluminum alloy. As a result several interesting findings were obtained including the development of two symmetrically identical vortexes at the roll entrance.

Twin Roll Casting of Copper Alloy C19210 Using Commercial Scale Machine

2020 ◽  
Author(s):  
Shogo Imai ◽  
Shinichi Nishida ◽  
Kyohei Ogawa ◽  
Makoto Hagiwara ◽  
Daichi Uematsu ◽  
...  
Keyword(s):  
Copper Alloy ◽  
Strip Casting ◽  
Roll Speed ◽  
Release Agent ◽  
Metallic Luster ◽  
Twin Roll Casting ◽  
Commercial Scale ◽  
Roll Casting ◽  
Rolling Load ◽  
Twin Roll

Abstract Copper alloy C19210 have excellent corrosion resistance, heat resistance, and conductivity, and is used for precision electronic parts such as lead frame materials. Conventionally, copper alloy strips are manufactured by repeating heat treatment and cold rolling, and have a problem that it is multi-process and production cost is expensive. On the other hand, twin roll casting can improve the above problems because strips are made directly from molten metals. In this study, twin roll strip casting of copper alloy C19210 using commercial scale machine was operated. The aims of this study is to investigate the possibility of strip casting for copper alloy. The effect of the side dam and release agent was researched. The effect of rolls speed on the strip surface condition was researched. The improved side dam prevented molten metal leakage. The release agent prevented sticking of the manufactured strip to the roll surface. The strip produced at roll speed of 7 m/min and 10 m/min had a lot of metallic luster. Moreover, the strip produced at roll speed of 7 m/min had more metallic luster than the strip produced at roll speed of 10 m/min. The lower the roll speed is, the greater the rolling load is. At a roll speed of 7 m / min, the rolling load became the maximum rolling load of the equipment. For producing strips with copper alloy C19210, higher rolling loads are preferred.

405 Continuous strip casting of copper alloy by vertical twin roll casting process

2015 ◽  
Vol 2015.23 (0) ◽  
pp. 137-138
Author(s):  
Tomohisa TAKADA ◽  
Fumiya YAMANO ◽  
Yuki AKAIKE ◽  
Yoshitaka SATO ◽  
Masaru FUJITA ◽  
...  
Keyword(s):  
Copper Alloy ◽  
Casting Process ◽  
Strip Casting ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll ◽  
Continuous Strip

Twin roll casting of copper alloy C19210 using commercial scale machine

2019 ◽  
Vol 2019.27 (0) ◽  
pp. 425
Author(s):  
Shogo IMAI ◽  
Makoto HAGIAWARA ◽  
Yuto HORIGOME ◽  
Shinichi NISHIDA
Keyword(s):  
Copper Alloy ◽  
Twin Roll Casting ◽  
Commercial Scale ◽  
Roll Casting ◽  
Twin Roll

Thin Plate Production of Copper Alloy C19210 by Twin Roll Casting Using Commercial Scale

2020 ◽  
Vol 2020.28 (0) ◽  
pp. 410
Author(s):  
Shogo IMAI ◽  
Makoto HAGIWARA ◽  
Takahiro SHIGA ◽  
Mizuki KAWAWA ◽  
Hisamichi OHNO ◽  
...  
Keyword(s):  
Thin Plate ◽  
Copper Alloy ◽  
Twin Roll Casting ◽  
Commercial Scale ◽  
Plate Production ◽  
Roll Casting ◽  
Twin Roll
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