DEVELOPMENT AND TESTING OF A MEASURING COMPLEX FOR MONITORING THERMAL PARAMETERS OF THE CONTINUOUS CASTING MOLD

2020 ◽  
Vol 4 (97) ◽  
pp. 9-18
Author(s):  
VASILIY P. VINOGRADOV ◽  
ALEXANDER L. KUZMINOV
Keyword(s):  
Chemical Composition ◽  
Continuous Casting ◽  
Experimental Work ◽  
Cast Steel ◽  
Thermal Parameters ◽  
Quality Indices ◽  
Technological Parameters ◽  
Continuous Casting Mold ◽  
Measuring Complex ◽  
The Relationship

he authors consider the methodology for studying thermal parameters of the mold using a measuring complex of dual-zone thermocouple sensors. The article describes experimental work on establishing the relationship between the surface quality indices of slab billets and technological parameters, thermotechnical indicators of the mold and the chemical composition of cast steel.

Effect of Basicity on Continuous Casting Mold Flux Properties

2012 ◽  
Vol 567 ◽  
pp. 62-65 ◽  
Author(s):  
Xin Hua Zhu ◽  
Li Guang Zhu ◽  
Yu Liu ◽  
Peng Fei Wang
Keyword(s):  
Continuous Casting ◽  
Mold Flux ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Flux Function ◽  
Physical And Chemical ◽  
The Relationship ◽  
And Chemical Properties

Basicity is an important parameter which can determine the performance of continuous casting fluxes, and it have different effects on flux of various physical and chemical properties. This paper discusses the relationship and impact between basicity and the physical and chemical properties of flux, Which proved how changes of basicity affect physical and chemical properties of flux, and then how it affects the flux function .

scholarly journals Construction of Nonsinusoidal Oscillation Waveform Function and Technological Parameters for Continuous Casting Mold

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Chao Zhou ◽  
Xingzhong Zhang ◽  
Fang Wang ◽  
Subo Ren
Keyword(s):  
Continuous Casting ◽  
Surface Quality ◽  
Sinusoidal Oscillation ◽  
Technological Parameters ◽  
Continuous Casting Mold ◽  
Synchronous Control ◽  
Limit Value ◽  
Steel Continuous Casting ◽  
The Impact

Nonsinusoidal oscillation techniques can shorten the negative strip time and improve the slab surface quality in the process of steel continuous casting. But the acceleration of nonsinusoidal oscillation is higher than that of the sinusoidal oscillation. So it is easy to result in the impact for the mold movement. To solve this problem, a nonsinusoidal oscillation waveform function of mold was constructed, which had good dynamic characteristics. And the smaller acceleration can reduce the impact of the oscillator. By analyzing the parameters of oscillation technology, the calculation method of each oscillation technological parameter for seven section functions was presented and the multitechnological parameter curves were given. Based on the technological parameters of sinusoidal oscillation, a synchronous control model of nonsinusoidal oscillation was determined. The results show that the parameters can satisfy the limit value in theory, which can enhance the casting speed, surface quality of slab, and provide reference for further practice in industry.

scholarly journals Study of a forecasting possibility of high carbon wire rods quality at production of them at a wire rod mill

2018 ◽  
pp. 60-67
Author(s):  
I. G. Shubin ◽  
M. V. Shubina
Keyword(s):  
Chemical Composition ◽  
Mechanical Characteristics ◽  
Rolling Process ◽  
Main Task ◽  
Regression Equations ◽  
Quality Indices ◽  
High Carbon ◽  
Technological Parameters ◽  
Technological Factors ◽  
The Wire

The choice of technological parameters of high carbon wire rods production process determines the values of mechanical properties and quality indices. Variations of technological parameters of rolling process and steel chemical composition predetermine considerable dispersion of mechanical characteristics values and quality indices of high carbon wire rods: tensile strength, percent elongation, reduction of area and microstructure. Stabilization of obtained mechanical characteristics values and quality indices during wire rods production was the main task of the study. During the work execution statistical methods of experiment data processing with application of regression analysis methods. Equations for carbon equivalent value determining were elaborated and applied. Regression dependences of quality indices change on the steel chemical composition and the rolling process technological factors plotted, which allow to forecast their values and effective correct the wire rods rolling regimes. General tendencies of the quality indices change, simulated by the obtained regression equations, correlate with industrial data. At the confidence probability of 95%, all the obtained equations of wire rods quality indices interrelation with technological factors of their production are statistically significant. Error of the obtained regression dependences is in the range of 4–11%. Results of the study allow recommending application of those mathematical dependences for a model elaboration, capable of finished products required properties forecasting. When it is necessary to change the regulation level of quality indices, application of obtained mathematical dependences will allow to make corrections on the value range of the wire rods rolling process technological parameters. Forecasting of quality indices values and effective correction of wire rods rolling regimes increase reproducibility stability of mechanical characteristics and wire rods quality indices.

scholarly journals Use of sewage sludge in concrete industry

2021 ◽  
Vol 18 (5) ◽  
pp. 566-575
Author(s):  
I. L. Chulkova ◽  
O. E. Smirnova ◽  
A. V. Krasova
Keyword(s):  
Chemical Composition ◽  
Sewage Sludge ◽  
Experimental Work ◽  
Building Material ◽  
Building Materials ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
National Standards ◽  
Actual Problem ◽  
The Relationship

Introduction. The article deals with the actual problem of disposal of industrial waste (sewage sludge). According to the literature data, possible directions of the use of sewage sludge in the production of building materials are identified and considered. Special attention is paid to the proposed variant of systematization of materials, which is based on the dependence of the aggregate state of the sediment on the type of building material. It is proposed to use sewage sludge as a complex additive to improve rheological properties at all stages of heavy concrete hardening.Methods and materials. Studies of the basic properties of raw materials and concrete based on them were determined using standard methods and the requirements of national standards. The material and chemical composition of the sediments, their physical and mechanical characteristics were determined on the basis of the laboratory of the plant of chemical concentrates (Novosibirsk).Results. As a result of the experimental work, the optimal percentage of sewage sludge in the composition of heavy concrete was determined, as well as the ratio of the chemical modifying additive, the optimal composition of concrete was investigated.Conclusion. As a result of the experimental work, the influence of the introduction of sewage sludge modified with plasticizing additives into the concrete composition was established. It has been established that sewage sludge is advisable to use in heavy concrete as a corrective additive without reducing the strength characteristics. In further studies, it is planned to solve the problems of structure formation and study of the interface between the phases of sewage sludge in the composition of concrete; to investigate the relationship between the chemical composition of precipitation and the physical and mechanical properties of a building material.

Application Of Electron Probe Analyses Of Minerals In Discussing The Relationship Between Ductile Deformation And Metamorphism

1990 ◽  
Vol 48 (2) ◽  
pp. 250-251
Author(s):  
Fan Guochuan ◽  
Sun Zhongshi
Keyword(s):  
Chemical Composition ◽  
Shear Deformation ◽  
Electron Probe ◽  
General Rule ◽  
Granulite Facies ◽  
Ductile Deformation ◽  
Higher Temperature ◽  
Ductile Shear ◽  
The Relationship ◽  
Ductile Shear Deformation

Under influence of ductile shear deformation, granulite facies mineral paragenesis underwent metamorphism and changes in chemical composition. The present paper discusses some changes in chemical composition of garnet in hypers thene_absent felsic gnesiss and of hypersthene in rock in early and late granulite facies undergone increasing ductile shear deformation .In garnet fetsic geniss, band structures were formed because of partial melting and resulted in zoning from massive⟶transitional⟶melanocrate zones in increasing deformed sequence. The electron-probe analyses for garnet in these zones are listed in table 1 . The Table shows that Mno, Cao contents in garnet decrease swiftly from slightly to intensely deformed zones.In slightly and moderately deformed zones, Mgo contents keep unchanged and Feo is slightly lower. In intensely deformed zone, Mgo contents increase, indicating a higher temperature. This is in accord with the general rule that Mgo contents in garnet increase with rising temperature.

Assessment of the Peritectic Behavior in the Continuous Casting Mold

2020 ◽  
Author(s):  
C. Ortner ◽  
L. Martins Demuner ◽  
M. Schuster ◽  
O. Lang ◽  
F. Ramstorfer
Keyword(s):  
Continuous Casting ◽  
Continuous Casting Mold ◽  
Casting Mold

THE ROLE OF LITERACY METHODS IN MASTERING OF WRITTEN LANGUAGE BY STUDENTS WITH DEVELOPMENTAL DYSLEXIA

2019 ◽  
Vol 7 (1) ◽  
pp. 10-18
Author(s):  
Tsvetanka Tsenova
Keyword(s):  
Experimental Work ◽  
Developmental Dyslexia ◽  
Reading Skills ◽  
Writing Skills ◽  
Written Language ◽  
Reading And Writing ◽  
Empirical Verification ◽  
Literacy Methods ◽  
The Relationship

This article focuses on the relationship between literacy methods applied at school and the emergence of serious difficulties in mastering reading and writing skills that shape the developmental dyslexia. The problem was analyzed theoretically and subjected to empirical verification. Experimental work was presented which aims to study the phonological and global reading skills of 4- th grade students with and without dyslexia. Better global reading skills have been demonstrated in all tested children, and this is much more pronounced in those with dyslexia than their peers without disorders. Hence, the need to develop a special, corrective methodology for literacy of students with developmental dyslexia consistent with their psychopathological characteristics.

Possible examinations of stone machining focused on the relationship between technological parameters and surface quality

2013 ◽  
Vol 4 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Zs. Kun ◽  
I. G. Gyurika
Keyword(s):  
Surface Roughness ◽  
Metal Cutting ◽  
Cutting Speed ◽  
Theoretical Background ◽  
Motion Path ◽  
Depth Of Cut ◽  
Manufacturing Cost ◽  
Technological Parameters ◽  
The Relationship ◽  
Manufacturing Time

Abstract The stone products with different sizes, geometries and materials — like machine tool's bench, measuring machine's board or sculptures, floor tiles — can be produced automatically while the manufacturing engineer uses objective function similar to metal cutting. This function can minimise the manufacturing time or the manufacturing cost, in other cases it can maximise of the tool's life. To use several functions, manufacturing engineers need an overall theoretical background knowledge, which can give useful information about the choosing of technological parameters (e.g. feed rate, depth of cut, or cutting speed), the choosing of applicable tools or especially the choosing of the optimum motion path. A similarly important customer's requirement is the appropriate surface roughness of the machined (cut, sawn or milled) stone product. This paper's first part is about a five-month-long literature review, which summarizes in short the studies (researches and results) considered the most important by the authors. These works are about the investigation of the surface roughness of stone products in stone machining. In the second part of this paper the authors try to determine research possibilities and trends, which can help to specify the relation between the surface roughness and technological parameters. Most of the suggestions of this paper are about stone milling, which is the least investigated machining method in the world.

Quality analysis and prospects for use of lupin seeds of Belarusian selection

2020 ◽  
Vol 3 (1) ◽  
pp. 22
Author(s):  
Lyudmila Rukshan ◽  
Alena Navazhilova ◽  
Dmitry Kudin
Keyword(s):  
Chemical Composition ◽  
Physical Properties ◽  
Wheat Flour ◽  
Great Influence ◽  
Quality Analysis ◽  
Bakery Products ◽  
Whole Grain ◽  
Technological Parameters ◽  
Protein Food ◽  
Lupin Seeds

The paper investigates technological parameters of the quality of low-alkaloid lupin of five cultivars selected and grown in the Republic of Belarus during the years from 2007 to 2017. Prospects for the use of the obtained seeds have been studied. This study reveals great influence of cultivar and climatic conditions during growth of lupin seeds on correlation of anatomic parts in seeds as well as on their physical properties. Cultivar of lupin seeds Jan is recommended for whole grain flour and graded flour production based on its anatomic composition, uniformity and physical properties. A comparative analysis of chemical composition, quality parameters and technological properties of lupin flour has been done. The chemical composition of lupin flour, of whole grain lupin flour, in particular, has been found to be relatively low in starch, high in protein, food fibers, minerals and organic acids. As a result, whole grain lupin flour has been proved to have higher food value when compared to traditional wheat flour. This paper demonstrates the difference between lupin flour characteristics and those of wheat flour in terms of color, acidity, enzymatic activity and adsorbing properties. This study reveals the possibility of use of lupin flour in bakery products by substituting traditional types of flour with lupin flour at 10-30% levels, as well as by replacing egg products with lupin flour at 25-50% levels. The work highlights the use of lupin flour at the stages of dough kneading, dough preparation, foam and emulsion production mainly by using rapid dough making methods.Practical applicationsRecommendations have been made on the usage of lupin flour in the technological process of bakery products manufacturing, macaroni and flour confectionery products production.

Sign in / Sign up

Export Citation Format

Share Document