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Online since: September 2016
Authors: D.O. Pustovoytov, Alexander M. Pesin
Although many studies have been done, but there are no numerical data on the analysis of the applicability of the shear-compression testing to the modeling of the asymmetric rolling processes.
It corresponded to 15% of height (H) reduction.
However the height reduction of the specimen during shear-compression testing is limited by its destruction.
The maximum height reduction should be established from experimental testing.
The shear zone in gauge section was approximately 1.0 mm after 15% of height reduction.
It corresponded to 15% of height (H) reduction.
However the height reduction of the specimen during shear-compression testing is limited by its destruction.
The maximum height reduction should be established from experimental testing.
The shear zone in gauge section was approximately 1.0 mm after 15% of height reduction.
Online since: May 2012
Authors: Yu Long Zhang, Qian Cheng, Lin Fei Zhou
And the monetary value is calculated based on the functional zones with map data after visual interpretation.
Data Sources The geographical coordinates of Liaohe River estuarine wetland nature reserve is longitude 121° 00'~ 121° 30', latitude 40° 45'~ 41° 00'.
The study is based on TM image data of Liaohe River estuarine wetland nature reserve in 1988, 1995, 2000, 2005, 2006, 2007 and 2009.
For the reason that the data span is 7 years, the average value of the 7 year data is chosen as basic data to make it more consistent.
Considered the average value of the two data, the scientific and education value for per unit area of the wetland is calculated as 3897.2 yuan/hm2.
Data Sources The geographical coordinates of Liaohe River estuarine wetland nature reserve is longitude 121° 00'~ 121° 30', latitude 40° 45'~ 41° 00'.
The study is based on TM image data of Liaohe River estuarine wetland nature reserve in 1988, 1995, 2000, 2005, 2006, 2007 and 2009.
For the reason that the data span is 7 years, the average value of the 7 year data is chosen as basic data to make it more consistent.
Considered the average value of the two data, the scientific and education value for per unit area of the wetland is calculated as 3897.2 yuan/hm2.
Online since: February 2011
Authors: Hua Wang, Jian De Wu, Xiao Dong Wang, Yu Gang Fan
Intelligent plant design of pipeline transportation presents in this paper, taking intelligent data integration technologies, holding real-time data, running conditions of pipeline transportation and equipment, devices modeling integrated into a platform, achieving optimal scheduling, the goal of intelligent scheduling, as a result it can improve the management level, achieve energy conservation, improve production efficiency.
The platform through FCS, MES, ERP three-tier to establish the basic platform of the intelligent plant, control the main production device real-time date of the whole plant, provide a data foundation for further advanced control strategies.
(3) Establishment the virtual reality platform that based on the enterprise-level production whole process simulation technology Establishment the module that can processes the prescribed format data and then obtain the running state of the slurry; and for the pulp operation in real-time data acquisition and effective management; use slurry model manipulate the related effective management data to form a slurry operation monitoring information ; create a graphical configuration and slurry running state publishing system; analysis long-distance pipeline transportation process pipeline diameter change, and monitoring the slurry erosion corrosion on the pipeline, as well as dynamic monitoring pipeline whether has the phenomenon of retention of coarse particles of pulp, so in a timely manner to avoid the pipe wear when stopping and then starting caused by the backlog of coarse particle slurry in the pipeline.
On-line monitoring system based on ERP / MES / PCS three-tier structure, with pipeline transportation production practice, based on information and pipeline professional knowledge, through the key technology (data collection, expert model, platform, database, mobile communication technology, product model technology) to achieve the organic integration of expert system and management system and to achieve the combining of management and control.
Realize production information integrated system and data visualization systems, and can optimize scheduling to save energy on information systems to reach emission reduction requirements.
The platform through FCS, MES, ERP three-tier to establish the basic platform of the intelligent plant, control the main production device real-time date of the whole plant, provide a data foundation for further advanced control strategies.
(3) Establishment the virtual reality platform that based on the enterprise-level production whole process simulation technology Establishment the module that can processes the prescribed format data and then obtain the running state of the slurry; and for the pulp operation in real-time data acquisition and effective management; use slurry model manipulate the related effective management data to form a slurry operation monitoring information ; create a graphical configuration and slurry running state publishing system; analysis long-distance pipeline transportation process pipeline diameter change, and monitoring the slurry erosion corrosion on the pipeline, as well as dynamic monitoring pipeline whether has the phenomenon of retention of coarse particles of pulp, so in a timely manner to avoid the pipe wear when stopping and then starting caused by the backlog of coarse particle slurry in the pipeline.
On-line monitoring system based on ERP / MES / PCS three-tier structure, with pipeline transportation production practice, based on information and pipeline professional knowledge, through the key technology (data collection, expert model, platform, database, mobile communication technology, product model technology) to achieve the organic integration of expert system and management system and to achieve the combining of management and control.
Realize production information integrated system and data visualization systems, and can optimize scheduling to save energy on information systems to reach emission reduction requirements.
A Modeling of Vinyl Acetate Synthesis Process Based on Genetic Algorithm Optimization Neural Network
Online since: September 2013
Authors: Jie Zhu, Ming Yu Li, Hua Meng
A chemical plant in vinyl acetate synthesis reaction as the object of study, based on site data collection and mechanism analysis to determine the auxiliary variables on the basis of on-site data processing, through a combination of genetic algorithms and neural network combined to build a synthetic reaction model.
For this optimized BP Neural Network Based on Self-adapted Genetic Algorithm, by comparing the simulation data obtained by the instance of the digital signal proved that this method has better prospects than traditional neural network algorithm.
Pressure As the vinyl acetate synthesis reaction of acetylene and acetic acid is a volume reduction of the reaction, so in theory to increase the pressure on the synthesis is advantageous.
Furthermore, because most of the gas is recycled, the conversion rate of the acetylene is only about 10%, in terms of the entire system, the reduction in volume is limited.
According to the mechanism of the reaction process, the on-site production process monitoring data and auxiliary variable selection principle, consulting scene process operator, decides that the input layer of the neural network including temperature, pressure, space velocity, and molar ratio.
For this optimized BP Neural Network Based on Self-adapted Genetic Algorithm, by comparing the simulation data obtained by the instance of the digital signal proved that this method has better prospects than traditional neural network algorithm.
Pressure As the vinyl acetate synthesis reaction of acetylene and acetic acid is a volume reduction of the reaction, so in theory to increase the pressure on the synthesis is advantageous.
Furthermore, because most of the gas is recycled, the conversion rate of the acetylene is only about 10%, in terms of the entire system, the reduction in volume is limited.
According to the mechanism of the reaction process, the on-site production process monitoring data and auxiliary variable selection principle, consulting scene process operator, decides that the input layer of the neural network including temperature, pressure, space velocity, and molar ratio.
Online since: May 2014
Authors: Lian Long Wang
There is important practical reference to master the carbon system of specific data for emission reduction policy formulation and adjustment of industrial structure.
Due to the availability of the raw data, the researches on carbon emission of domestic small and medium-sized cities are less done, [2] and Wanchun Su studied the main sub-industries of Guangzhou city from the perspective of low carbon emission and put forward relative to the implementation of industrial low carbon strategy. [3, 4] Material and treatment Economic data of Qinhuangdao from year 2005 to 2010 come from statistical yearbook 2006 to 2011, GDP and industry output value in 2000 as a comparable benchmark.
City statistical yearbook on energy consumption of a lot of general statistics are based on the heat is converted into equivalent of standard coal, but the release of the same heat energy different types of carbon emissions are not the same, so this study collected various types of energy consumption data of industries, multiplied by the corresponding coefficient of carbon in different types of energy can get the industry carbon emissions. [5].Combination of Qinhuangdao industry over the years the major types of energy, carbon emission coefficient of different types of energy main reference data, the remaining energy type discharge coefficient and according to the calculation method of calculation, the results are shown in Table 1, from Table 1 the main industrial energy carbon emission coefficient can be acquired.
To combine "the government-led, to the enterprise as the main body," university-industry cooperation mode of energy conservation and emissions reduction, use "structure system of energy conservation, technical skills and energy saving" three energy-saving way [7], reduce industrial carbon emissions intensity.
Establish market service mechanism, increase the promotion of new products, new technologies, energy saving and emission reduction.
Due to the availability of the raw data, the researches on carbon emission of domestic small and medium-sized cities are less done, [2] and Wanchun Su studied the main sub-industries of Guangzhou city from the perspective of low carbon emission and put forward relative to the implementation of industrial low carbon strategy. [3, 4] Material and treatment Economic data of Qinhuangdao from year 2005 to 2010 come from statistical yearbook 2006 to 2011, GDP and industry output value in 2000 as a comparable benchmark.
City statistical yearbook on energy consumption of a lot of general statistics are based on the heat is converted into equivalent of standard coal, but the release of the same heat energy different types of carbon emissions are not the same, so this study collected various types of energy consumption data of industries, multiplied by the corresponding coefficient of carbon in different types of energy can get the industry carbon emissions. [5].Combination of Qinhuangdao industry over the years the major types of energy, carbon emission coefficient of different types of energy main reference data, the remaining energy type discharge coefficient and according to the calculation method of calculation, the results are shown in Table 1, from Table 1 the main industrial energy carbon emission coefficient can be acquired.
To combine "the government-led, to the enterprise as the main body," university-industry cooperation mode of energy conservation and emissions reduction, use "structure system of energy conservation, technical skills and energy saving" three energy-saving way [7], reduce industrial carbon emissions intensity.
Establish market service mechanism, increase the promotion of new products, new technologies, energy saving and emission reduction.
Online since: February 2012
Authors: Chao Wu, Mai Dun Shao, Dong Bin Ai
With requirements to air quality for human’s living, energy conservation and emission reduction, motorcycle emission in our country is in strict accordance with Euro III standard, while use of EFI (Electronic Fuel Injection) control system is one of the main measures to achieve the emission requirements.
It not only fulfills the requirement of energy conservation and emission reduction, but also improves the performance of control system.
Related data shows that if the air-fuel ratio is kept around 14.7, performance of gasoline engine is optimized [1, 2].
It not only fulfills the requirement of energy conservation and emission reduction, but also improves the performance of control system.
Related data shows that if the air-fuel ratio is kept around 14.7, performance of gasoline engine is optimized [1, 2].
Online since: December 2012
Authors: M. Zargar Shoushtari, S E. Mousavi Ghahfarokhi, F. Ranjbar
The XRD results revealed that for SrFe12-xCoxO19 samples with x≤0.5, all of them have single- phase hexaferrite structure and also this data suggests that the Fe3+ ions are substituted by Co2+ ions in the crystallography sites of the SrFe12O19, but for the samples with x>0.5, the second phase of CoFe2O4 is appeared and suggests that the Co2+ ions also make a distinct phase in the samples.
The reduction in anisotropy of the M-type hexaferrites structure decreases the coercivity, but replacement of Fe3+ by these cations lowers the saturation magnetization.
Accordingly, reduction in the coercivity along with increasing in the saturation magnetization is a new approach in preparing hexaferrites [3].
Also, the reduction in saturation magnetization for high level of the doped Co ions (x≥0.5) mainly attributed to decreasing in molar magnetic moment which is caused by substitution of Co2+ (~4μB) for Fe3+ (~5μB) [4].
Also the reduction in saturation magnetization for high level of the doped Co ions (x≥0.5) mainly attributed to the decrease in molar magnetic moment caused by substitution of Co2+ (~4 μB) for Fe3+ (~5 μB).
The reduction in anisotropy of the M-type hexaferrites structure decreases the coercivity, but replacement of Fe3+ by these cations lowers the saturation magnetization.
Accordingly, reduction in the coercivity along with increasing in the saturation magnetization is a new approach in preparing hexaferrites [3].
Also, the reduction in saturation magnetization for high level of the doped Co ions (x≥0.5) mainly attributed to decreasing in molar magnetic moment which is caused by substitution of Co2+ (~4μB) for Fe3+ (~5μB) [4].
Also the reduction in saturation magnetization for high level of the doped Co ions (x≥0.5) mainly attributed to the decrease in molar magnetic moment caused by substitution of Co2+ (~4 μB) for Fe3+ (~5 μB).
Online since: July 2018
Authors: Saiful Amri Mazlan, Ubaidillah Ubaidillah, Ilham Bagus Wiranto, Faishal Harish, Endra Dwi Purnomo, Dody Ariawan
The data was compared with simulation results.
Since the difference is insignificant, it can be said that the data is valid.
At the beginning and at the end of the chart the data has not convergent yet, but in the middle the data make a steady line.
To ensure the validity of the result from finite element analysis, the experimental data was compared to the simulation data.
Both validation data is taken at the wall casing and the difference is about 6-40 mT.
Since the difference is insignificant, it can be said that the data is valid.
At the beginning and at the end of the chart the data has not convergent yet, but in the middle the data make a steady line.
To ensure the validity of the result from finite element analysis, the experimental data was compared to the simulation data.
Both validation data is taken at the wall casing and the difference is about 6-40 mT.
Online since: January 2010
Authors: Harald Hofmann, Thomas Heller, Sascha Sikora
Sikora
3,c
1,3
ThyssenKrupp Steel, Dortmund, Germany
2
ThyssenKrupp Steel, Duisburg, Germany
a
harald.hofmann@thyssenkrupp.com, bthomas.heller@thyssenkrupp.com,
csascha.sikora@thyssenkrupp.com
Keywords: New steels, hot forming, semi hot forming, superplastic forming, product development
process, pre-development, technology monitoring, simultaneous engineering, material data base
Abstract.
On the other hand, the trend towards fuel economy and exhaust emission reduction has brought forth the requirement to construct lighter weight auto bodies.
All data are available for the customers in the TKS material data base.
Fig. 12: The research network of the center of materials excellence of TKS Summary Intensive R&D work of the steel industry aims at the development of multi-phase steels and high manganese steels for strength-relevant structural components and auto body parts with significant weight reduction.
Product information at every stage of the development process is made available for the automotive manufactures by the TKS material data base.
On the other hand, the trend towards fuel economy and exhaust emission reduction has brought forth the requirement to construct lighter weight auto bodies.
All data are available for the customers in the TKS material data base.
Fig. 12: The research network of the center of materials excellence of TKS Summary Intensive R&D work of the steel industry aims at the development of multi-phase steels and high manganese steels for strength-relevant structural components and auto body parts with significant weight reduction.
Product information at every stage of the development process is made available for the automotive manufactures by the TKS material data base.
Online since: August 2015
Authors: Maria Kapustova
Market economy stimulates drop forges to produce forged pieces of highest quality and dimension accuracy with the accent on reduction of production costs.
Comparison of Material Savings for Production Alternatives of Ring-Shaped Drop Forging Compared to the common die forging with flash, precision closed-die forging without flash has following advantages: - Reduction in material loss from 15 to 30% - Reduction in forging forces from 30 to 40% - Reduction in costs necessary for mechanical treatment (machining) - Achievement of higher strain degree - Improvement of mechanical properties of drop forgings Material saving is often determined from the calculation of batch weight of semi-product [1, 3].
In order to start a forging process simulation regarding a ring-shaped forged piece it is necessary to properly define the input data – these data were defined as follows: · process: closed-die forging · forging machine: mechanical press · material of semi-product: DIN 17210 (1.7131) · material of tool: ASTM A 681 (H13) · semi-product temperature: 1150°C · tool temperature: 250°C · coefficient of friction: 0.25 Fig. 4.
Comparison of Material Savings for Production Alternatives of Ring-Shaped Drop Forging Compared to the common die forging with flash, precision closed-die forging without flash has following advantages: - Reduction in material loss from 15 to 30% - Reduction in forging forces from 30 to 40% - Reduction in costs necessary for mechanical treatment (machining) - Achievement of higher strain degree - Improvement of mechanical properties of drop forgings Material saving is often determined from the calculation of batch weight of semi-product [1, 3].
In order to start a forging process simulation regarding a ring-shaped forged piece it is necessary to properly define the input data – these data were defined as follows: · process: closed-die forging · forging machine: mechanical press · material of semi-product: DIN 17210 (1.7131) · material of tool: ASTM A 681 (H13) · semi-product temperature: 1150°C · tool temperature: 250°C · coefficient of friction: 0.25 Fig. 4.