Hybrid Control Design for Twin-Roll Strip Casting

2016 ◽  
Author(s):  
N. S. D. Arrifano ◽  
R. R. Nascimento ◽  
J. Santos ◽  
V. A. Oliveira ◽  
E. Gesualdo
Keyword(s):  
Hybrid Control ◽  
Control Design ◽  
Strip Casting ◽  
Twin Roll

6xxx Series Al Alloy Sheets with High Formability Produced by Twin-roll Strip Casting and Asymmetric Rolling

2012 ◽  
Vol 50 (7) ◽  
pp. 503-509 ◽  
Author(s):  
Jae-Chul Lee ◽  
Hong-Kyu Kim ◽  
Jae-Hyung Cho ◽  
Hyoung-Wook Kim
Keyword(s):  
Strip Casting ◽  
Al Alloy ◽  
Asymmetric Rolling ◽  
6Xxx Series ◽  
Twin Roll

scholarly journals Effect of Oscillation Parameters to Flow Field in the Pool during the Oscillating Twin-Roll Strip Casting Process

2018 ◽  
Vol 31 (1) ◽  
Author(s):  
Zhi-Qiang Xu ◽  
Zhe-Ru Meng ◽  
Shun-Hui Xue ◽  
De-Quan Zhang ◽  
Feng-Shan Du
Keyword(s):  
Flow Field ◽  
Casting Process ◽  
Strip Casting ◽  
Twin Roll

Crack Formation Mechanism of High Silicon Steel during Twin-Roll Strip Casting

2017 ◽  
Vol 898 ◽  
pp. 1276-1282
Author(s):  
Wen Li Hu ◽  
Yuan Xiang Zhang ◽  
Guo Yuan ◽  
Guo Dong Wang
Keyword(s):  
Formation Mechanism ◽  
Crack Formation ◽  
Silicon Steel ◽  
Strip Casting ◽  
Dominant Factor ◽  
Transverse Cracks ◽  
High Silicon Steel ◽  
High Silicon ◽  
Gas Gap ◽  
Twin Roll

High silicon steel was fabricated by twin-roll strip casting. The cracks on the surfaces of the processed strips were obtained and analyzed by digital camera after series of surface treatment. Optical microscopy (OM) and scanning electron microscopy (SEM) were used to observe and characterize the microstructure nearby crack and fracture surface along the normal direction, respectively, and the crack formation mechanism was further analyzed in conjunction with processing parameters utilized during twin-roll strip casting process. The results indicated that morelongitudinal cracks along the rolling direction were observed in comparison with transverse cracks along the transverse direction on the strip surfaces. Trans granular and intergranular fracture modes both worked during the formations of longitudinal and transverse cracks on the processed strips. The dominant factor causing the formation of crack on the surface of the processed strips was the inhomogeneous transfer of heat during casting and rolling. The inhomogeneous transfer of heat induced by gas gap during casting resulted in variations of dendrite length and secondary dendrite spacing (SDAS). Meanwhile, the casting velocity influenced the formation of gas gap, which further influenced the thermal contraction. So the control of velocity of casting above a certain level proved beneficial to enhancing the performance of strip casting and to improving the quality of strip products.

Microstructure characteristics of Ti–43Al alloy during twin-roll strip casting and heat treatment

2019 ◽  
Vol 29 (5) ◽  
pp. 1017-1025 ◽  
Author(s):  
Mang XU ◽  
Guo-huai LIU ◽  
Tian-rui LI ◽  
Bing-xing WANG ◽  
Zhao-dong WANG
Keyword(s):  
Heat Treatment ◽  
Strip Casting ◽  
Microstructure Characteristics ◽  
Twin Roll

Three-Layer Clad Strip Casting Using a Vertical Type Tandem Twin Roll Caster

2018 ◽  
Vol 773 ◽  
pp. 171-178
Author(s):  
Toshio Haga ◽  
Kentaro Okamura ◽  
Hisaki Warari ◽  
Shinichi Nishida
Keyword(s):  
Aluminum Alloy ◽  
Strip Casting ◽  
Tensile Shear ◽  
Shear Testing ◽  
Roll Speed ◽  
Solidification Temperature ◽  
Twin Roll Caster ◽  
Twin Roll

This paper shows improvements made to a vertical type tandem twin roll caster and the appropriate casting conditions necessary to cast three-layer clad strips, the base strip of which has a lower solidification temperature than the overlay strip. In experiments, 4045 aluminum alloy was used for the base strip and 3003 aluminum alloy was used for the overlay strips. The roll speed was 30 m/min. By connecting the overlay strips to the base strip one at a time and cooling the base strip to between 450 and 530°C after applying the first overlay strip, a sound three-layer clad strip – defined as one in which the interfaces between strips are clear and do not separate during bending-to-failure tests – could be cast. The tensile shear testing between the base and second overlay strip was improved as the base-strip temperature was increased to 450-530°C range.

Modelling of coupling flow and temperature fields in molten pool during twin-roll strip casting process

2007 ◽  
Vol 187-188 ◽  
pp. 339-343 ◽  
Author(s):  
X.M. Zhang ◽  
Z.Y. Jiang ◽  
L.M. Yang ◽  
X.H. Liu ◽  
G.D. Wang ◽  
...  
Keyword(s):  
Molten Pool ◽  
Casting Process ◽  
Strip Casting ◽  
Temperature Fields ◽  
Twin Roll

Nonmetallic inclusions in SUS304 strip produced by twin-roll strip casting

2008 ◽  
Vol 15 (2) ◽  
pp. 110-113 ◽  
Author(s):  
Fuxiang Huang ◽  
Jiongming Zhang ◽  
Xinhua Wang ◽  
Yuan Fang ◽  
Yan Yu
Keyword(s):  
Nonmetallic Inclusions ◽  
Strip Casting ◽  
Twin Roll
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