Nonlinear dynamics and chaotic motion in the isothermal film casting process

2011 ◽  
Vol 23 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Hyun Wook Jung ◽  
Joo Sung Lee
Keyword(s):  
Nonlinear Dynamics ◽  
Chaotic Motion ◽  
Casting Process ◽  
Film Casting

Effect of Magnetic Field on Air Film Continuous Casting

2011 ◽  
Vol 189-193 ◽  
pp. 2827-2831
Author(s):  
Fu Qu ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Low Frequency ◽  
Casting Process ◽  
Film Casting ◽  
Film Stability ◽  
Good Surface ◽  
Frequency Magnetic Field ◽  
Speed Up ◽  
Air Film

The influences of low frequency magnetic field and static magnetic field on the air film casting process are studied in this paper. 6063 aluminum alloy ingot of 174-mm diameter were produced by electromagnetic air film casting process; intensity of the coil current is from 50 to 200A, and frequency is from 15 to 30Hz. The results showed that low-frequency magnetic fields can speed up the flow of liquid metal in sump and the air film stability was undermined, leading to folds and segregations appeared on the ingot surface. Static magnetic field could inhibit the melt to erosion the solidified shell effectively, it’s help to improve the speed and pull good surface quality.

Kinematic waves and draw resonance in film casting process

2001 ◽  
Vol 101 (1-3) ◽  
pp. 43-54 ◽  
Author(s):  
Joo Sung Lee ◽  
Hyun Wook Jung ◽  
Hyun-Seob Song ◽  
Kwan-Young Lee ◽  
Jae Chun Hyun
Keyword(s):  
Casting Process ◽  
Film Casting ◽  
Draw Resonance ◽  
Kinematic Waves

Modeling and simulation for the investigation of polymer film casting process using finite element method

2020 ◽  
Vol 169 ◽  
pp. 88-102 ◽  
Author(s):  
Yue Mu ◽  
Lianqiang Hang ◽  
Guoqun Zhao ◽  
Xiaona Wang ◽  
Youlei Zhou ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Modeling And Simulation ◽  
Polymer Film ◽  
Casting Process ◽  
Film Casting ◽  
Element Method

The Polymer Film Casting Process – An Overview

2021 ◽  
Vol 36 (3) ◽  
pp. 264-275
Author(s):  
Y. Demay ◽  
J. F. Agassant
Keyword(s):  
Thin Films ◽  
Film Thickness ◽  
Numerical Models ◽  
Casting Process ◽  
Film Casting ◽  
Processing Conditions ◽  
Film Extrusion ◽  
Dog Bone ◽  
Stable Conditions ◽  
Width Reduction

Abstract Cast film extrusion allows producing technical polymer films for packaging and coating applications. Different kinds of defects may be observed. For packaging applications, the challenge is to obtain very thin films in stable conditions at the highest throughput. For coating applications, the challenge is to master the film width reduction (called neck-in) and the induced non-uniform film thickness (called dog-bone defect). Well instrumented experiments point out the influence of the polymer and of the processing conditions on the occurrence of these defects. Numerical models of increasing complexity allow capturing the main experimental features and this makes possible to propose technological solutions to delay or even to suppress defects occurrence.

THEORETICAL ANALYSIS OF FILM CASTING PROCESS WITH A PINNING DEVICE UNDER STEADY STATE

2008 ◽  
Vol 28 (5) ◽  
Author(s):  
Toshiro Yamada ◽  
Tatsuki Matsuo ◽  
Susumu Kase ◽  
Takahiro Tosa
Keyword(s):  
Steady State ◽  
Theoretical Analysis ◽  
Casting Process ◽  
Film Casting

On the stability of extending films: a model for the film casting process

1974 ◽  
Vol 66 (3) ◽  
pp. 613-622 ◽  
Author(s):  
Y. L. Yeow
Keyword(s):  
Simple Model ◽  
Eigenvalue Problems ◽  
Film Flow ◽  
Casting Process ◽  
Neutral Stability ◽  
Two Dimensional ◽  
Film Casting ◽  
Hydrodynamic Stability Theory ◽  
The Stability ◽  
Stability Results

Isothermal Newtonian film flow is put forward as a simple model of the film casting process. Methods of linear hydrodynamic stability theory are applied to study the stability of the film flow. The relevant eigenvalue problems are formulated and solved numerically. Results are presented in the form of neutral-stability curves in the appropriate parameter space. For the case of two-dimensional disturbances stability results obtained here are compared with those of Pearson & Matovich (1969) and Gelder (1971) for the stability of isothermal Newtonian threadline flow.

Analysis of Film Casting Process:  Effect of Cooling during the Path in Air

2006 ◽  
Vol 45 (2) ◽  
pp. 719-723 ◽  
Author(s):  
Gaetano Lamberti ◽  
Giuseppe Titomanlio
Keyword(s):  
Casting Process ◽  
Film Casting
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