Evaluation of the Continuous Casting Method for Bearing Steel Production—SKF Experience

2009 ◽  
pp. 237-237-15 ◽  
Author(s):  
F Hengerer ◽  
J Beswick ◽  
A Kerrigan
Keyword(s):  
Continuous Casting ◽  
Steel Production ◽  
Bearing Steel ◽  
Casting Method

scholarly journals Mechanical property of lotus-type porous carbon steel fabricated by continuous casting method

2009 ◽  
Vol 165 ◽  
pp. 012071
Author(s):  
Y Kawamura ◽  
S Suzuki ◽  
S-Y Kim ◽  
H Nakajima ◽  
M Kashihara ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Carbon Steel ◽  
Continuous Casting ◽  
Porous Carbon ◽  
Casting Method

Sensorless electric drive of the mixture supply system in the mold of the continuous steel casting installation

2021 ◽  
pp. 16-21
Author(s):  
K. V. Litsin ◽  
D. M. Utyamishev
Keyword(s):  
Continuous Casting ◽  
Electric Drive ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Steel Production ◽  
Angular Speed ◽  
Quality Level ◽  
Actual Direction ◽  
Vector Control System ◽  
The Cost

The system of automatic feeding of the slag-forming mixture into the mold of the continuous casting machine was investigated in this article. The necessity of using a slag-forming mixture in the process of steel production has been substantiated. The proofs are given that the consumption of the slag-forming mixture significantly affects the cost of the final product. The quality level of the final product depends on the uniformity and consistency of the mixture supply to the crystallizer. Therefore, the actual direction is the automation of the process of feeding the slag-forming mixture into the mold of the continuous casting machine. The description of the developed automatic installation, which implements the supply of slag-forming mixture, is presented. The necessity of using a sensorless electric drive for moving the trolley has been substantiated. A simulation model of a bogie electric drive with a vector control system based on sensorless determination of the angular speed of the engine has been developed. The description of the method for determining the angular speed of the motor based on the known values of phase voltages is given. The simulation of the developed electric drive system in the Matlab Simulink program, confirming the adequacy of the developed system. The introduction of a sensorless electric drive into the system for feeding the mixture into the mold of the continuous casting machine will increase the reliability of the entire system and reduce its weight and dimensions.

scholarly journals An improved imperialist competitive algorithm for hybrid flowshop rescheduling in steelmaking-refining-continuous casting process

2020 ◽  
pp. 002029402096018
Author(s):  
Kunkun Peng ◽  
Xudong Deng ◽  
Chunjiang Zhang ◽  
Quan-Ke Pan ◽  
Liang Ren ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Optimal Schedule ◽  
Steel Production ◽  
Casting Process ◽  
Imperialist Competitive Algorithm ◽  
Initial Population ◽  
Hybrid Flowshop ◽  
Iron And Steel ◽  
Competitive Algorithm ◽  
Iron And Steel Production

Steelmaking-refining-Continuous Casting (SCC) is a key process in iron and steel production. SCC scheduling is to determine an optimal schedule for the SCC process, which is a worldwide and important problem. High-quality SCC scheduling methods will help to allocate production resources effectively and increase the productivity. However, dynamic events (e.g. machine breakdown) may happen in the realistic SCC process, which will make the SCC schedule inexecutable or not optimal. In this case, SCC rescheduling is essential in order to obtain a new optimal schedule suitable for the current production environments. The SCC rescheduling can be modeled as hybrid flowshop rescheduling. In this paper, an Improved Imperialist Competitive Algorithm (IICA) is proposed to address the SCC rescheduling. In the proposed IICA, an empire initialization is first devised for constructing an initial population with diversity and certain quality. Moreover, multiswap-based local search and imperialist competition are designed to improve the exploitation ability of the IICA, while revolution and restart strategy are devised to enhance the exploration ability of the IICA. Comparison experiments with three kinds of ICA have shown the efficiency of the IICA.

scholarly journals Numerical Study of Turbulent Flows and Heat Transfer in Coupled Industrial-Scale Tundish of a Continuous Casting Material in Steel Production

2018 ◽  
Author(s):  
Jose Adilson de Castro ◽  
Bruno Amaral Pereira ◽  
Roan Sampaio de Souza ◽  
Elizabeth Mendes de Oliveira ◽  
Ivaldo Leão Ferreira
Keyword(s):  
Heat Transfer ◽  
Continuous Casting ◽  
Turbulent Flows ◽  
Numerical Study ◽  
Steel Production ◽  
Industrial Scale

New hot-top continuous casting method featuring application of air pressure to mold

2016 ◽  
pp. 550-555
Author(s):  
Ryota Mitamura ◽  
Tadao Ito ◽  
Yasuhiro Takahashi ◽  
Takaya Hiraoka
Keyword(s):  
Continuous Casting ◽  
Air Pressure ◽  
Casting Method ◽  
Hot Top

Improvement of centre segregation in continuous casting bloom and the resulting carbide homogeneity in bearing steel GCr15

2019 ◽  
Vol 46 (9) ◽  
pp. 896-905 ◽  
Author(s):  
Hanghang An ◽  
Yanping Bao ◽  
Min Wang ◽  
Quan Yang ◽  
Yongsheng Huang
Keyword(s):  
Continuous Casting ◽  
Bearing Steel

Dendrite Growth Characteristics and Segregation Control of Bearing Steel Billet with Rotational Electromagnetic Stirring

2017 ◽  
Vol 36 (4) ◽  
pp. 339-346 ◽  
Author(s):  
Yu Xu ◽  
Xiu-Jie Xu ◽  
Zhuang Li ◽  
Tao Wang ◽  
An-Yuan Deng ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Solidification Process ◽  
Bearing Steel ◽  
Dendrite Growth ◽  
Growth Characteristics ◽  
Electromagnetic Stirring ◽  
Secondary Dendrite Arm Spacing ◽  
Steel Billet ◽  
Dendrite Fragmentation ◽  
Equiaxed Grain

AbstractThe effects of rotational electromagnetic stirring (R-EMS) on dendrite growth characteristics and segregation control of bearing steel billet were investigated in continuous casting. The results show that applying R-EMS can promote columnar-equiaxed transition, increase the region of the equiaxed grain from 5 % to 45 %, decrease the secondary dendrite arm spacing (SDAS), and reduce the segregation of both carbon and sulfur. Meanwhile, the fragments of dendrite arms induced by R-EMS are observed. The length of the dendrite fragmentation is approximately 1.5 mm, 7–10 times the SDAS. Some fragments can partially remelt to become effective nuclei, and some fragments survive the solidification process.

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