M703 Study of Al-SiCP Strip Casting by Twin Roll Casting Method

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.

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

The Proceedings of Ibaraki District Conference ◽

10.1299/jsmeibaraki.2015.23.137 ◽

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

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Analysis of Properties of Selected Aluminium Alloys, Obtained by Twin Roll Casting Method and Subjected to Cold Rolling Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.641.202 ◽

2015 ◽

Vol 641 ◽

pp. 202-209

Author(s):

Wojciech Ściężor ◽

Andrzej Mamala ◽

Paweł Kwaśniewski

Keyword(s):

Mechanical Properties ◽

Continuous Casting ◽

Cold Rolling ◽

Aluminium Alloys ◽

Raw Materials ◽

Uniaxial Tensile ◽

Casting Method ◽

Twin Roll Casting ◽

Roll Casting ◽

Twin Roll

Modern manufacturing technologies of flat cold-rolled products made of aluminium and its alloys are based on raw materials produced with the use of continuous casting technology. One of the most frequently used integrated production processes, based on continuous casting of metal, is twin roll casting method (TRC). In TRC method liquid metal flows into the area formed by two water-cooled rolls, solidifies and next is deformed (rolled) which allows to obtain strip with several millimetres thickness. Thanks to this, it is possible to eliminate hot rolling stage from the typical production technology, and directly subject obtained sheets to cold rolling process.This paper presents results of cold rolling strain dependency on the mechanical properties of tested aluminium alloys from 1XXX, 3XXX and 8XXX series, produced in the laboratory conditions with the use of TRC method. Furthermore the rolling loads and basic mechanical properties, determined in an uniaxial tensile, were examined.

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Application of Vertical-Type High-Speed Twin-Roll Casting for Up-Grade Recycling and Clad Sheets Fabrication of Aluminum Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.877.56 ◽

2016 ◽

Vol 877 ◽

pp. 56-61 ◽

Cited By ~ 2

Author(s):

Shinji Kumai ◽

Yusuke Takayama ◽

Ryoji Nakamura ◽

Daisuke Shimosaka ◽

Yohei Harada ◽

...

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

High Speed ◽

Cast Aluminum Alloy ◽

Cast Aluminum ◽

Casting Method ◽

Twin Roll Casting ◽

Roll Casting ◽

Twin Roll Cast ◽

Twin Roll

A horizontal-type twin roll casting method has been popular for producing aluminum alloy strips, however, it is characterized by a relatively low productivity (1~6 m/min). In contrast, a vertical-type high-speed twin-roll casting method possesses an extremely high productivity (60~120 m/min (1~2 m/s)) and an excellent heat extraction ability. The rapid cooling effect provided significant microstructure refinement and mechanical properties improvement in various kinds of cast aluminum alloy products. Not only “product to product recycling” but also “up-grade recycling” can be achieved by making good use of these merits. Two examples of application showing the potential of vertical-type high-speed twin roll casting method are presented. (1) Several kinds of Al-Si base alloy were cast into the strips. Not only strength and toughness but also formability was increased in the twin roll cast products. In particular, great improvement in deformability shows the potential of the twin-roll cast aluminum alloy products as substitutes for some wrought aluminum alloy products. (2) The vertical-type tandem twin-roll caster was able to fabricate a clad strip by single step. The A4045/A3003/A4045 aluminum alloy clad sheets produced by the twin-roll casting showed better mechanical properties than the conventional hot-roll bonded clad sheets.

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Review on Vertical Twin-Roll Strip Casting: A Key Technology for Quality Strips

Journal of Metallurgy ◽

10.1155/2016/1038950 ◽

2016 ◽

Vol 2016 ◽

pp. 1-13 ◽

Cited By ~ 1

Author(s):

Seshadev Sahoo

Keyword(s):

Casting Process ◽

Strip Casting ◽

Iron And Steel Industry ◽

Iron And Steel ◽

Twin Roll Casting ◽

Roll Casting ◽

Near Net Shape ◽

The Subject ◽

Twin Roll ◽

Metal Delivery

Nowadays near-net-shape casting technology is an important area of research in the iron and steel industry. Among different kinds of near-net-shape casting process, twin-roll casting process has received much attention among researchers. Twin-roll casting (TRC) has been the subject of extensive research, not only to develop the technology but also to achieve an understanding of microstructural evolution and to produce quality strips. The main issues concerning the design and operation of twin-roll casters are metal-mold heat transfer, metal delivery system, and their possible effects on the solid shell formation and characteristics of the strips. The present review gives an idea about the process aspect, modeling, and quality issues in vertical twin-roll strip casting process and helps to improve the design of twin-roll strip caster.

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Effect of annealing after strip casting on texture development in grain oriented silicon steel produced by twin roll casting

Materials Characterization ◽

10.1016/j.matchar.2015.07.001 ◽

2015 ◽

Vol 107 ◽

pp. 79-84 ◽

Cited By ~ 23

Author(s):

Yang Wang ◽

Yun-Bo Xu ◽

Yuan-Xiang Zhang ◽

Feng Fang ◽

Xiang Lu ◽

...

Keyword(s):

Silicon Steel ◽

Strip Casting ◽

Texture Development ◽

Twin Roll Casting ◽

Roll Casting ◽

Twin Roll

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Effects of Casting Speed on Thin Gauge Foil Surface Quality of 8079 Aluminum Alloy Produced by Twin Roll Casting Method

Transactions of the Indian Institute of Metals ◽

10.1007/s12666-019-01563-w ◽

2019 ◽

Vol 72 (4) ◽

pp. 1001-1011 ◽

Cited By ~ 1

Author(s):

A. Ulas Malcioglu ◽

Cisem Dogan ◽

Canan Inel ◽

Ceren Gode

Keyword(s):

Aluminum Alloy ◽

Surface Quality ◽

Casting Speed ◽

Foil Surface ◽

Casting Method ◽

Twin Roll Casting ◽

Roll Casting ◽

Twin Roll

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The Microstructure and Processing in Twin Roll Casting of Magnesium Alloy Strip

Materials Science Forum ◽

10.4028/www.scientific.net/msf.488-489.427 ◽

2005 ◽

Vol 488-489 ◽

pp. 427-430 ◽

Cited By ~ 15

Author(s):

Chun Mei Yang ◽

Ding Fei Zhang ◽

Pei Dao Ding ◽

Fu Sheng Pan

Keyword(s):

Magnesium Alloy ◽

Casting Process ◽

Strip Casting ◽

Casting Temperature ◽

Process Stability ◽

Cast Strip ◽

Twin Roll Casting ◽

Roll Casting ◽

Twin Roll ◽

Cast Microstructure

Magnesium has a hexagonal close-packed crystal structure which makes it more difficult to deform than aluminum. Conventional strip production usually requires several process steps to reach the final strip thickness. Strip casting can reduce some of the process steps and make strip processing simpler and easier, especially for alloys with poor deformability. The twin-roll casting process can directly obtain strips with thickness less than one or two millimeters. In this paper, the metallurgical characteristics of the twin-roll strip casting process were analyzed and discussed. A laboratory scale vertical twin roll caster in prepared AZ31 magnesium alloy strips, with 1.0 to 2.0 mm thick and 150mm wide. Process stability in the thin strip casting process of the alloy has been studied, the casting temperature (superheat) was proven to be a key factor influencing process stability and casting strip quality. The as-cast microstructure of the alloy was analyzed and evaluated by optical microscopy, which showed that the as-cast microstructure was composed of developed dendrites when the superheat was high, and of a rosebush-like structure when the superheat was low. When the casting temperature was close to the liquid phase temperature，the as-cast microstructure became global or grainy, and the grain size of the cast strip was very small. This remarkably improved the deformability of the as-cast strip.

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