Advanced technology of process design for high-quality bar and wire-rod production

1982 ◽  
Vol 9 (1) ◽  
pp. 46-51
Author(s):  
S. Kojima ◽  
T. Ohnishi ◽  
T. Saito ◽  
K. Oka
Keyword(s):  
Process Design ◽  
Advanced Technology ◽  
High Quality ◽  
Wire Rod

Upgradation of Low Grade Coal to High Quality Coal by Chemical Beneficiation Technique

2017 ◽  
Author(s):  
Sushanta Kumar Behera ◽  
S. Chakraborty ◽  
B. C. Meikap
Keyword(s):  
Power Generation ◽  
Energy Security ◽  
Alternative Energy ◽  
Research Study ◽  
Advanced Technology ◽  
Mineral Matter ◽  
Low Grade ◽  
Chemical Cleaning ◽  
High Quality ◽  
Coal Matrix

Low rank or grade coals (LGC) are widely distributed over the world. Coal plays a vital role in the global energy demand especially through power generation and it mitigates the energy poverty. The major challenges by the utility of coal as regarding to energy security, a risk of climate change, and increasing of the energy demands are the main portfolio to develop the advanced technology for coal beneficiation. The gradual depletion of high quality coal and cost effective which become a significant issue for power generation while the low grade coals were served as low cost fuel and as an alternative energy security issue. In current research the low grade coal (>35% ash) has been upgraded to higher grade (<10%) by chemical cleaning method. The low grade coal was selected from Mahanadi Coalfields Limited, Odisha, India. Each test was conducted of 50 g coal (250 μm particle size) with 40% NaOH at 100 °C for 3 h and followed with 20% of H2O2, H2SO4, HCl, and HF acids at similar conditions. The research study revealed that ash content (mineral matter) of coal is reduced to >70% by NaOH followed HF treatment as compared to other solvents. The greater liberation of mineral results increases the ash reduction from low grade coal because mineral associated in the coal matrix may formed elution by the leaching effect. The greater extent of demineralization was caused due to the high affinity of OH− and F− with minerals in the coal matrix. The characterization of pre and post treatment coal and coal ash was investigated by the FESEM, XRF and XRD analysis. Overall the current research study challenges the chemical cleaning of low grade coal has been efficient techniques for reducing the minerals to a certain limit.

The Application of Building Information Model in the Deepen Design of Prestressed Concrete Structures

2014 ◽  
Vol 716-717 ◽  
pp. 303-306
Author(s):  
Er Wei Guo ◽  
Ying Xin Qian ◽  
Gang Xu ◽  
Jin Dong Gao ◽  
Chen Guang Li
Keyword(s):  
Process Design ◽  
Prestressed Concrete ◽  
Digital Technology ◽  
Concrete Structure ◽  
Concrete Structures ◽  
Advanced Technology ◽  
Two Dimensional ◽  
Building Information Model ◽  
Building Information ◽  
Complete Process

Currently deepen design of prestressed concrete structure exists various problems, them can be solved using BIM building digital technology in the deepen design phase of prestressed concrete structures, such as constant correction of the two-dimensional drawings. BIM technology was advanced technology, the design of prestressed concrete structures, was given by using BIM technology in the complete process; Design process and value of the application of the BIM technology in the prestressed concrete structure were analyzed, Prospects of the BIM technology using in prestressed concrete were discussed.

Process Design on Baogang 2250mm Hot Rolling Project

2013 ◽  
Vol 744 ◽  
pp. 283-287
Author(s):  
Lin Li ◽  
Fu Ming Zhang ◽  
Hong Wen Liu ◽  
Ruo Yu Zang ◽  
Fan Wang
Keyword(s):  
Hot Rolling ◽  
Process Design ◽  
Raw Materials ◽  
International Standards ◽  
Design Flow ◽  
Utilization Efficiency ◽  
High Quality ◽  
Flow Process ◽  
Production Scale ◽  
Starting Point

Based on scale and output, process design assures high-end products for Baogang, ensures advancement and reliability of devices, enhances Chinese split supply ratio; ability to decrease investment and implement sustainable scientific outlook on development. To introduce production scale and product scheme in Baogang 2250mm hot rolling project, and illustrate design flow, process arrangement and equipment level. Ability to insist on a high starting point, reference to international standards, use advanced devices in order to meet high-quality needs and achieve strong competitiveness, adhere to strategy of sustainable development, improve on utilization efficiency of raw materials, energy and water, accomplish cyclic utilization. Leading products are high-quality rare-earth auto plates, steel sheets for home electrical appliances. The layout of plant is tightly linked with process design and whole plan, short process, smooth logistics, less middle stages and advanced automatic control system create international level in 21st century.

Preparation of high quality Microgranulate CrO3 based on green process design

2017 ◽  
Vol 95 (7) ◽  
pp. 1261-1268
Author(s):  
Wenwen Cui ◽  
Ping Li ◽  
Yongan Chen ◽  
Chuang Liu ◽  
Hailin Zhang ◽  
...  
Keyword(s):  
Process Design ◽  
Green Process ◽  
High Quality

scholarly journals Modernization of continuous casting machines with the purpose of increasing of finished product quality

2018 ◽  
pp. 50-60
Author(s):  
S. I. Shakhov ◽  
D. S. Shakhov
Keyword(s):  
Liquid Metal ◽  
Crystallization Process ◽  
Advanced Technology ◽  
Electromagnetic Stirring ◽  
Technology Selection ◽  
High Quality ◽  
Soft Reduction ◽  
Liquid Portion ◽  
Physical Impact ◽  
Finished Product Quality

To prevent formation or suppress development of crystallization,shrink and liquating defects different methods of physical impact on setting melt are used. For technology selection in every case economy, efficiencyand ecological norms should be considered first of all.Methods of physical impact on crystallizable billet considered: electro-hydro impulse impact, gas-impulse stirring, modifier input, inoculator input, consumable coolers input, ultrasonic impact, “soft” reduction, electromagnetic stirring (EMS).Due to authors’ opinion, EMS of liquid portion of a CC billet is the most effective method ofactive impact on crystallization process of a CC billet directly during casting resulted in a guarantee possibility to control the process of structure formation. At present in world practice the EMS of liquid metal at CC machines became an integral part of advanced technology of high quality billets obtaining. The requirements increase to products qualityand development of effective methods and means of melts electromagnetic processing resulted in a requirement of obligatory EMS usage when producing products of high quality steels.It was shown, that for a number of CC bullet macrostructure defects, arising from crystallization process, shrinkage and liquating phenomena, which can not be eliminated completely even at optimal CC machinesdesign features and rational technology parameters of CC process, additional methods of physical impact on the liquid metal setting needed. The method to be used depends on the CC technology and existing CC machines equipment.

Training in Advanced Engineering Design

1987 ◽  
Vol 201 (4) ◽  
pp. 205-213
Author(s):  
Robert Lickley
Keyword(s):  
Continuing Education ◽  
Engineering Design ◽  
Research Council ◽  
Education And Training ◽  
Advanced Technology ◽  
Design And Development ◽  
Science And Engineering ◽  
High Quality ◽  
Engineering Research ◽  
And Training

Engineering design and the education and training of more high-calibre engineering designers to ensure an increased flow of advanced technology, high-quality products from British shores, is becoming critical. This is recognized by an increasing number of top managements in industry, the Science and Engineering Research Council, Department of Trade and Industry and other leading bodies in the country. There is no doubt that comprehensive capable engineering designers cannot be produced solely from undergraduate courses and therefore urgent attention should be paid to establishing more postgraduate courses and other means of continuing education in advanced engineering design and development—including those which are project based—and to examine methods by which this might be achieved. A discussion meeting with invited senior participants, held at the Institution of Mechanical Engineers, London, and chaired by Sir Robert Lickley, is reported.

A CrIS Cloud Detection Method Based on CrIS and ATMS Measurements

2020 ◽  
Author(s):  
Li Guan ◽  
Qiumeng Xue
Keyword(s):  
Detection Method ◽  
Principal Component ◽  
Field Of View ◽  
Advanced Technology ◽  
Inversion Method ◽  
Cloud Detection ◽  
High Quality ◽  
Thermal Contrast ◽  
Cross Track ◽  
Cloud Mask

&lt;p&gt;The Suomi National Polar-orbiting Partnership (SNPP) satellite carrying the Cross-track Infrared Sounder (CrIS) and the Advanced Technology Microwave Sounder (ATMS) instruments can provide high quality hyperspectral infrared (IR) data and microwave (MW) measurements. It is very important to ensure the accuracy of cloud detection in the infrared hyperspectral measurements before they are used for geophysical retrievals or data assimilation. Therefore, a cloud detection method using the CrIS hyperspectral radiances at longwave (709.5-746.0 cm&lt;sup&gt;-1&lt;/sup&gt;) and shortwave (2190-2250 cm&lt;sup&gt;-1&lt;/sup&gt;) bands and the ATMS measurements is introduced in this paper. Four steps are included in this algorithm: identifying clear FOV, estimating the number of cloud formations, thermal contrast, and cloud mask classification. Specifically, each CrIS field-of-view (FOV) is preliminarily assigned as clear or cloudy by comparing the measured IR radiances and simulated IR clear radiances which are generated from the MW-retrieved geophysical state vector based on a physical inversion method. Secondly, the number of cloud formations within one CrIS field-of-regard (FOR) is estimated using the principal component analysis (PCA). Next, CrIS radiances at longwave channels and shortwave bands are used to evaluate the thermal contrast within the FOR. Based on the above informations each FOR will finally be assigned a cloud mask classification. The cloud mask results derived from this technique are also analyzed.&lt;/p&gt;

Producing high-quality wire rod on a 150 mill

2007 ◽  
Vol 37 (7) ◽  
pp. 630-633
Author(s):  
E. A. Evteev ◽  
A. A. Klekovkin ◽  
E. L. Mamykin ◽  
A. V. Kuznetsov
Keyword(s):  
High Quality ◽  
Wire Rod
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