Study on the In-mold Flow Behavior Driven by a Subsurface Electromagnetic Stirring for IF Steel Slab Casting

2021 ◽  
pp. 590-601
Author(s):  
Hong Xiao ◽  
Shao-xiang Li ◽  
Pu Wang ◽  
Hai-yan Tang ◽  
Jia-quan Zhang
Keyword(s):  
Flow Behavior ◽  
Electromagnetic Stirring ◽  
If Steel ◽  
Steel Slab ◽  
Slab Casting ◽  
Mold Flow

scholarly journals Hot Ductility of TiNb IF Steel Slab after Hot Torsion Testing

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 752 ◽  
Author(s):  
Konrádyová ◽  
Longauerová ◽  
Jonšta ◽  
Jonšta ◽  
Longauer ◽  
...  
Keyword(s):  
Temperature Cycling ◽  
Hot Ductility ◽  
If Steel ◽  
Cast Slab ◽  
Torsion Testing ◽  
Steel Slab ◽  
Temperature Dependences ◽  
Hot Torsion ◽  
Average Size ◽  
20 Nm

The aim of the work was to evaluate the hot ductility loss in TiNb stabilized IF steel directly from the continuously-cast slab using hot torsion testing (plastometry) in the temperature range 600–1250 °C according to the basic programme, and also after temperature cycling. A good match of the temperature dependences of number of turns to failure (Nf) and intensity of deformation Se was confirmed. In both cases, the existence of three temperature areas with decrease in plasticity to a minimum was confirmed. The two-stage temperature cycling according to the CT1150 and CT900 programmes mostly resulted in a decrease in plasticity compared to the basic programme. The most significant effect of cycling was related to the CT900 programme below the maximum plasticity in the base programme at 850 °C. A less pronounced decrease was observed for CT1150 cycling below the maximum plasticity in the base program at 1050 °C. In the case of CT1150 cycling, more complex particles were observed at the fractures compared with the basic programme, namely carbonitrides of Ti and Nb in combination with oxisulfides respectively, then Ti nitrides with oxisulfides or oxides and, in addition, complex (Fe,Nb)P4, (Ti,Nb)3S4 type particles. Their mean size determined statistically using TEM was much finer, only 20 nm versus 42 nm in the basic programme. Similarly, CT900 cycling revealed finer particles with an average size of 37 nm compared to 105 nm in the basic programme. The observed particles were Al oxides, Ti(N,C) and (Ti,Nb)2S, in contrast to the particles probably of TiFe and FeMnS in the basic programme. The decrease in plasticity corresponded to the finer particles, newly created in the temperature cycling.

scholarly journals Development of Fluoride-free Mold Powders for Peritectic Steel Slab Casting

2007 ◽  
Vol 47 (8) ◽  
pp. 1117-1125 ◽  
Author(s):  
Guanghua Wen ◽  
Seetharaman Sridhar ◽  
Ping Tang ◽  
Xin Qi ◽  
Yongqing Liu
Keyword(s):  
Peritectic Steel ◽  
Steel Slab ◽  
Slab Casting ◽  
Mold Powders

scholarly journals Mold Flow Analysis of Motor Core Gluing with Viscous Flow Channels and Dipping Module

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2186
Author(s):  
Yong-Jie Zeng ◽  
Sheng-Jye Hwang ◽  
Yu-Da Liu ◽  
Chien-Sheng Huang
Keyword(s):  
Flow Behavior ◽  
Flow Analysis ◽  
Experimental Results ◽  
Iron Loss ◽  
Developmental Trend ◽  
Magnetic Circuits ◽  
Flow Channels ◽  
Dipping Process ◽  
Simulation Results ◽  
Mold Flow

A motor core is formed by stacking iron sheets on top of each other. Traditionally, there are two stacking methods, riveting and welding, but these two methods will increase iron loss and reduce usage efficiency. The use of resin is the current developmental trend in the technology used to join iron sheets, which has advantages including lowering iron loss, smoothing magnetic circuits, and generating higher rigidity. The flow behavior of resin in gluing technology is very important because it affects the dipping of iron sheets and the stacking of iron sheets with resin. In this study, a set of analytical processes is proposed to predict the flow behavior of resin through the use of computer-aided engineering (CAE) tools. The research results are compared with the experimental results to verify the accuracy of the CAE tools in predicting resin flow. CAE tools can be used to predict results, modify modules for possible defects, and reduce the time and costs associated with experiments. The obtained simulation results showed that the filling trend was the same as that for the experimental results, where the error between the simulation results for the final dipping process and the target value was 0.6%. In addition, the position of air traps is also simulated in the dipping process.

F-free mould powders for low carbon steel slab casting – technological parameters and industrial trials

2016 ◽  
Vol 43 (8) ◽  
pp. 559-563 ◽  
Author(s):  
J. L. Klug ◽  
M. M. S. M. Pereira ◽  
E. L. Nohara ◽  
S. L. Freitas ◽  
G. T. Ferreira ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Technological Parameters ◽  
Steel Slab ◽  
Slab Casting

Development of low-fluoride and titanium-bearing mould fluxes for medium carbon peritectic steel slab casting

2014 ◽  
Vol 42 (2) ◽  
pp. 105-111 ◽  
Author(s):  
L. Y. Chen ◽  
G. H. Wen ◽  
C. L. Yang ◽  
F. Mei ◽  
C. Y. Shi ◽  
...  
Keyword(s):  
Medium Carbon ◽  
Peritectic Steel ◽  
Steel Slab ◽  
Slab Casting

Effect of Electromagnetic Stirring on Tin Bronze Plate Blank

2009 ◽  
Vol 610-613 ◽  
pp. 202-205
Author(s):  
Hua Qing Li ◽  
Chao Jian Xiang ◽  
Zhong Ping Chen ◽  
Ming Pu Wang
Keyword(s):  
Grain Size ◽  
Electromagnetic Field ◽  
Flow Behavior ◽  
Simulated Data ◽  
Electromagnetic Stirring ◽  
Continuous Cast ◽  
Inverse Segregation ◽  
Tin Bronze ◽  
Factory Test ◽  
Test Parameters

In the present work, the effect of electromagnetic field on the microstructure and the alloying agent distribution was investigated. Tin element was shown to have the tendency to be inversely segregated on the surface of tin bronze. The microstructures of the continuous cast tin bronze plates are coarse and inhomogeneous. The factory test parameters were determined according the simulated data. The flow behavior of the mercury to be stirred as well as the relations between the microstructure of plate blanks and the current parameters were analyzed. With an appropriate electromagnetic stirring, the inverse segregation of tin for C51900 alloy plant blank was improved by 80%, and the microstructure was refined from about 10mm to 1~3mm in grain size.

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