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Online since: December 2011
Authors: Hirofumi Inoue
The hot-rolled plates were symmetrically cold rolled to 65-95% reductions in thickness and then asymmetrically warm rolled to 20-40% reductions by one pass at 473 K with a roll speed ratio of 1.5.
To reveal a change in texture during solution treatment, the area fraction of representative orientations were determined from EBSD data by using the samples annealed at 813 K for some short periods within 90 s and immediately water-quenched.
The near-{111}<110> recrystallization texture, which has a peak in the center of a {111} pole figure, is formed at relatively low reductions of AWR, while the {111} orientations hardly develop at all CR reductions under the condition of 40% AWR reduction and the main component is expressed by {013}<631>.
Here C90A25 means cold rolling to 90% reduction and asymmetric warm rolling to 25% reduction.
Fig. 10 Optical micrograph in longitudinal section for AZ31Mg sheet hot rolled to 30% reduction and asymmetrically hot rolled to 20% reduction. 50μm Fig. 11 (0001) pole density distribution for AZ31Mg sheets hot rolled to 30% reduction, asymmetrically hot rolled to 20% reduction and annealed at 573 K for 1800 s.
To reveal a change in texture during solution treatment, the area fraction of representative orientations were determined from EBSD data by using the samples annealed at 813 K for some short periods within 90 s and immediately water-quenched.
The near-{111}<110> recrystallization texture, which has a peak in the center of a {111} pole figure, is formed at relatively low reductions of AWR, while the {111} orientations hardly develop at all CR reductions under the condition of 40% AWR reduction and the main component is expressed by {013}<631>.
Here C90A25 means cold rolling to 90% reduction and asymmetric warm rolling to 25% reduction.
Fig. 10 Optical micrograph in longitudinal section for AZ31Mg sheet hot rolled to 30% reduction and asymmetrically hot rolled to 20% reduction. 50μm Fig. 11 (0001) pole density distribution for AZ31Mg sheets hot rolled to 30% reduction, asymmetrically hot rolled to 20% reduction and annealed at 573 K for 1800 s.
Online since: June 2008
Authors: Krzysztof Jan Kurzydlowski, Halina Garbacz, Krzysztof Topolski
A reduction of the grain size of titanium leads to
a significant increase in its strength and hardness.
Parameters of hydrostatic extrusion processes applied to titanium Reduction of the rod diameter [mm] Temperature Accumulated strain (ε)ε)ε)ε) Total cross-section reduction (R) Number of HE stages Ø50mm → Ø3mm above recrystallization and ambient 5.63 277 11 Ø33mm → Ø5mm ambient 3.77 43.56 12 Ø20mm → Ø3mm ambient 3.79 44.44 12 Ø12mm → Ø3mm ambient 2.77 16 5 Description of hydro - extrusion method used here can be found in the earlier publications [10-12].
Comparison with the literature data [13-18] Summary The results obtained here allow to draw the following conclusions: 1.
Ø50→Ø3 Ø33→Ø5 Ø20→Ø3 Ø12→Ø3 Ti6Al4V Data from literature Current experimental study Acknowledgements: The study was realized in the framework of the 3T08A01929 project financed by the Polish Ministry of Science and Higher Education.
Parameters of hydrostatic extrusion processes applied to titanium Reduction of the rod diameter [mm] Temperature Accumulated strain (ε)ε)ε)ε) Total cross-section reduction (R) Number of HE stages Ø50mm → Ø3mm above recrystallization and ambient 5.63 277 11 Ø33mm → Ø5mm ambient 3.77 43.56 12 Ø20mm → Ø3mm ambient 3.79 44.44 12 Ø12mm → Ø3mm ambient 2.77 16 5 Description of hydro - extrusion method used here can be found in the earlier publications [10-12].
Comparison with the literature data [13-18] Summary The results obtained here allow to draw the following conclusions: 1.
Ø50→Ø3 Ø33→Ø5 Ø20→Ø3 Ø12→Ø3 Ti6Al4V Data from literature Current experimental study Acknowledgements: The study was realized in the framework of the 3T08A01929 project financed by the Polish Ministry of Science and Higher Education.
Online since: March 2015
Authors: Shan Qing, Zhen Wei Tian, Jian Jun Wang
In order to guide and standardize energy efficiency benchmarking in cigarette enterprises, promote energy-saving emission reduction work, this paper researches on how to structure the energy efficiency index system reasonably and scientifically.
The application practice shows that the energy-saving rate can reach over 18%, and continue to promote energy-saving emission reduction of cigarette enterprises through carrying out the energy-saving reform on the basis of reasonable application of the energy efficiency index system.
The State Council issued the “energy-saving emission reduction 12th five-year plan” in 2012 to clearly demand to carry out of thousands of enterprises energy saving and low carbon action, to conduct energy efficiency benchmarking activities and to improve China’s total energy efficiency.
General principle: determined index should be professional data which is general, common, and easy to obtain.
Those indexes mainly affect material quality, thus affecting indexes of energy consumption and emission reduction.
The application practice shows that the energy-saving rate can reach over 18%, and continue to promote energy-saving emission reduction of cigarette enterprises through carrying out the energy-saving reform on the basis of reasonable application of the energy efficiency index system.
The State Council issued the “energy-saving emission reduction 12th five-year plan” in 2012 to clearly demand to carry out of thousands of enterprises energy saving and low carbon action, to conduct energy efficiency benchmarking activities and to improve China’s total energy efficiency.
General principle: determined index should be professional data which is general, common, and easy to obtain.
Those indexes mainly affect material quality, thus affecting indexes of energy consumption and emission reduction.
Online since: March 2015
Authors: Yang Li, Xiao Sheng Wu, Wei Ping Zhang, Wen Yuan Chen
The external memory interfaces of F28335 include 20 address lines, 16-bits of data lines, three chip select control lines and write control lines.
XZCS7 chip selecting signal can be used to map the collected data to Zone7, which starting address is 0x200000.
When SER/PAR pin is low, the chip works on parallel mode, and with W/B in low, parallel data line DB[15:0] can be used in data transmission with AD7656.
After statistical analysis of sampling data taken in different periods, it could be found that means of data pre-filter and filtered are respectively 8.40mV and 8.15mV, while standard deviations are respectively 4.01mV and 1.13mV, thus the standard deviation decreases by 71.8%.
[4] Preliminary Technical Data of AD7656[S] Analog Devices
XZCS7 chip selecting signal can be used to map the collected data to Zone7, which starting address is 0x200000.
When SER/PAR pin is low, the chip works on parallel mode, and with W/B in low, parallel data line DB[15:0] can be used in data transmission with AD7656.
After statistical analysis of sampling data taken in different periods, it could be found that means of data pre-filter and filtered are respectively 8.40mV and 8.15mV, while standard deviations are respectively 4.01mV and 1.13mV, thus the standard deviation decreases by 71.8%.
[4] Preliminary Technical Data of AD7656[S] Analog Devices
Online since: June 2014
Authors: Hui Min Qiao, I- Shin Chang, Yan Xia Yang
Cleaner Production (CP) is a sustainable developing pattern and an environmental strategy based upon source reduction, under the context of rapid economic development, excessive resource utilization and consumption, fast depletion of natural resources, and severe degradation and deterioration of environmental quality.
Introduction In May 1989, United Nations Environment Program (UNEP) put forward the concept of Cleaner Production (CP), which was defined as the continuous application of an integrated preventive environmental strategy to processes, products and services to increase the overall ecological benefits and to reduce human and environmental risks, such as the conservation of raw materials and energy, the elimination of toxic materials and the reduction in the quantities and toxicity of wastes and emissions during processes; the reduction of negative impacts throughout the life cycle of the product: from raw material extraction to ultimate disposal; and the incorporation of environmental considerations into the design and delivery of services [1].
According to the statistical data, companies who have implemented CP and successfully past the assessment and acceptance of CPA are mostly allocated within seven industries, including Chemical Materials and Products manufacturing, Textile, Light Industries, Metal Surface Treatment and Heat Treatment Processing, Ferrous Metal Smelting and Rolling Processing and Non-Metallic Mineral Products Industries, shown in Figure 2.
Introduction In May 1989, United Nations Environment Program (UNEP) put forward the concept of Cleaner Production (CP), which was defined as the continuous application of an integrated preventive environmental strategy to processes, products and services to increase the overall ecological benefits and to reduce human and environmental risks, such as the conservation of raw materials and energy, the elimination of toxic materials and the reduction in the quantities and toxicity of wastes and emissions during processes; the reduction of negative impacts throughout the life cycle of the product: from raw material extraction to ultimate disposal; and the incorporation of environmental considerations into the design and delivery of services [1].
According to the statistical data, companies who have implemented CP and successfully past the assessment and acceptance of CPA are mostly allocated within seven industries, including Chemical Materials and Products manufacturing, Textile, Light Industries, Metal Surface Treatment and Heat Treatment Processing, Ferrous Metal Smelting and Rolling Processing and Non-Metallic Mineral Products Industries, shown in Figure 2.
Online since: May 2011
Authors: Bang Wu Chen, Zhuo Hao Xiao
For example, field instruments for environment monitoring can give the environment monitoring center and sub center with real time data of the regional surface water or atmosphere or waste water or waste gas or noise.
At the same time, the environment monitoring system can reflect and judge the variables of environmental factors by integrating the data given by the field instruments.
At present, the measurement infrastructure of emission in China is weak, so the environmental department can hardly get the real data of emission of enterprises, and also can hardly track and verify the emissions trading among enterprises The third allocation process is the restructuring of pollution right.
The ultimate goal of emissions trading is the reduction and control of pollution.
For the realization of ultimate goals of emissions trading, we hold forth some measurements for the government and other organizations involved in emissions trading: First, governments at all levels should encourage companies with advanced technology of emissions control or with heavy task of emissions reduction to set up joint emission treatment plants in industrial development zone or industrial function zone or in city and town, with the emissions reduction result verified to be held by funders and technical side, and they can use it to offset their emissions reduction quota or trade in the market.
At the same time, the environment monitoring system can reflect and judge the variables of environmental factors by integrating the data given by the field instruments.
At present, the measurement infrastructure of emission in China is weak, so the environmental department can hardly get the real data of emission of enterprises, and also can hardly track and verify the emissions trading among enterprises The third allocation process is the restructuring of pollution right.
The ultimate goal of emissions trading is the reduction and control of pollution.
For the realization of ultimate goals of emissions trading, we hold forth some measurements for the government and other organizations involved in emissions trading: First, governments at all levels should encourage companies with advanced technology of emissions control or with heavy task of emissions reduction to set up joint emission treatment plants in industrial development zone or industrial function zone or in city and town, with the emissions reduction result verified to be held by funders and technical side, and they can use it to offset their emissions reduction quota or trade in the market.
Online since: December 2012
Authors: Abdallah Diha, Zakaria Boumerzoug
This material is submitted to successive reduction by cold wiredrawing process.
The specimen elongation (strain) was measured by an acquisition data computer.
Effect of stress Figure 1 shows a series of creep curves, plotted as creep strain versus time for aluminum drawn wire with a rate of reduction up to 92.45 %.
Creep curves of aluminum wire with rate of reduction up to 92.45% at (σ1 =88, σ2 =106, σ3=123 MPa) and T = 473K.
The test data show a significant dependence of the minimum creep strain rates on the stress value.
The specimen elongation (strain) was measured by an acquisition data computer.
Effect of stress Figure 1 shows a series of creep curves, plotted as creep strain versus time for aluminum drawn wire with a rate of reduction up to 92.45 %.
Creep curves of aluminum wire with rate of reduction up to 92.45% at (σ1 =88, σ2 =106, σ3=123 MPa) and T = 473K.
The test data show a significant dependence of the minimum creep strain rates on the stress value.
Online since: January 2010
Authors: H. A. Cortéz, V. H. Jacobo, A. Ortiz, Rafael Schouwenaars
Strain hardening will be described by means of experimental data.
In spite of giving a good aproximation of the data, the physical processes involved in recrystallisation are not reflected in the curves.
In all cases, fitting parameters took values which indicated that recovery was not active, based on the available data.
Substituting these data into the complete model (11) sgg=-37, srx=7.1, Qrx=61400 and, krx=91 MPa µm-1/2, with a residual standard deviation of 26MPa.
Isostrain sections through the 3-dimensional response surface, using the complete model with grain growth parameters fitted to metallographic data.
In spite of giving a good aproximation of the data, the physical processes involved in recrystallisation are not reflected in the curves.
In all cases, fitting parameters took values which indicated that recovery was not active, based on the available data.
Substituting these data into the complete model (11) sgg=-37, srx=7.1, Qrx=61400 and, krx=91 MPa µm-1/2, with a residual standard deviation of 26MPa.
Isostrain sections through the 3-dimensional response surface, using the complete model with grain growth parameters fitted to metallographic data.
Online since: October 2015
Authors: Tamara Kharlamova, Ekaterina Sushchenko
In the case of VOx/AlC, the simple analysis of textural data is not possible due to carbon burning during the thermal treatment of the sample.
According to the data of thermal analysis (not shown), the support calcination in air to up to 700 °C results in 40% mass loss due to carbon oxidation, which is accompanied by reduction of support specific surface area from 460 to 196 m2/g and increase of its pore volume from 0.290 to 0.341 cm3/g.
According to XRD data, VOx/Al2O3 and VOx/SiO2 samples are composed of phases of the support (γ-Al2O3, amorphous SiO2) and orthorhombic V2O5.
Bands typical for crystalline V2O5 are not identified in the Raman spectrum of VOx/TiO2 [5, 6], which is in accordance with XRD data.
The latter corresponds to LTCT band of V5+ in the crystalline V2O5 [6], which is in accordance with XRD and Raman data.
According to the data of thermal analysis (not shown), the support calcination in air to up to 700 °C results in 40% mass loss due to carbon oxidation, which is accompanied by reduction of support specific surface area from 460 to 196 m2/g and increase of its pore volume from 0.290 to 0.341 cm3/g.
According to XRD data, VOx/Al2O3 and VOx/SiO2 samples are composed of phases of the support (γ-Al2O3, amorphous SiO2) and orthorhombic V2O5.
Bands typical for crystalline V2O5 are not identified in the Raman spectrum of VOx/TiO2 [5, 6], which is in accordance with XRD data.
The latter corresponds to LTCT band of V5+ in the crystalline V2O5 [6], which is in accordance with XRD and Raman data.
Online since: February 2012
Authors: Vinay Sharma, Sanjeev Kumar, Somnath Chattopadhyaya
The data were then analyzed using statistical package for the social sciences is used as a path analysis model to verify the hypothetical construction of the study.
It tells how likely it is that sample data have responded even if the null hypothesis is true.
DEV.) t p Waste discharge methodology for reducing cost 2.514 (0.853) 17.437 0.00 Reduction in cost for materials purchasing without affecting the quality of the product 2.342 (1.186) 11.679 0.00 Reduction in cost of energy consumption 2.714 (0.893) 17.972 0.00 Effective waste treatment management for reducing cost 2.571 (1.037) 14.668 0.00 Reduction of the fine for environmental accidents 2.285 (0.987) 13.696 0.00 “Economic Performance”, which has 5 underlying dimension.
In industry the most important dimension is Reduction in cost of energy consumption (2.714) followed by Effective waste treatment management for reducing cost (2.571), and the least important dimension is Reduction of the fine for environmental accidents (2.285) followed by Reduction in cost for materials purchasing without affecting the quality of the product (2.342).
To attain even greater cost savings from waste reduction, meet comprehensive social and environmental responsibility targets and find new products with smaller ecological footprints, industries must extend their goals for environmental performance into their suppliers’ operations.
It tells how likely it is that sample data have responded even if the null hypothesis is true.
DEV.) t p Waste discharge methodology for reducing cost 2.514 (0.853) 17.437 0.00 Reduction in cost for materials purchasing without affecting the quality of the product 2.342 (1.186) 11.679 0.00 Reduction in cost of energy consumption 2.714 (0.893) 17.972 0.00 Effective waste treatment management for reducing cost 2.571 (1.037) 14.668 0.00 Reduction of the fine for environmental accidents 2.285 (0.987) 13.696 0.00 “Economic Performance”, which has 5 underlying dimension.
In industry the most important dimension is Reduction in cost of energy consumption (2.714) followed by Effective waste treatment management for reducing cost (2.571), and the least important dimension is Reduction of the fine for environmental accidents (2.285) followed by Reduction in cost for materials purchasing without affecting the quality of the product (2.342).
To attain even greater cost savings from waste reduction, meet comprehensive social and environmental responsibility targets and find new products with smaller ecological footprints, industries must extend their goals for environmental performance into their suppliers’ operations.