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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: March 2011
Authors: Man Yin Hu, Yi Jing Jin, Yu Sun, Xiu Hong Wang
Simulation of boiler full load
The simulation is based on the existing data to set geometry model, through calculating Software setting the boundary conditions consistent with actual to conduct numerical calculation.
Fig. 2 the nephogram of vertical NOx mass fraction on catalyst layer under full load From the simulated data in the chart, the average of NOx mass fraction on catalyst layer under full load is 0.002414, with the denitration efficiency of 85.2%, more in line with the actual condition of 82%.
The concentration data of NH3 emission obtained by the software interception is 3.86mg/Nm3, and does not exceed the value of NH3 emissions allowed.
Simultaneously, the denitration efficiency will be increased correspondingly in the reactor, which is because when the gas volume reduces, NOx reduction will also reduce with it.
But note that when the boiler load is reduced, the reduction of flue gas temperature will affect the catalytic activity.
Fig. 2 the nephogram of vertical NOx mass fraction on catalyst layer under full load From the simulated data in the chart, the average of NOx mass fraction on catalyst layer under full load is 0.002414, with the denitration efficiency of 85.2%, more in line with the actual condition of 82%.
The concentration data of NH3 emission obtained by the software interception is 3.86mg/Nm3, and does not exceed the value of NH3 emissions allowed.
Simultaneously, the denitration efficiency will be increased correspondingly in the reactor, which is because when the gas volume reduces, NOx reduction will also reduce with it.
But note that when the boiler load is reduced, the reduction of flue gas temperature will affect the catalytic activity.
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: 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: August 2012
Authors: Ariadne de Souza Silva, J.H. Araújo, J.B. Manuel, M.J. Diniz, Uílame Umbelino Gomes
The reduction of the particle size is very important to get better properties of the hard metal.
The reduction of the coercitive field with milling time increase can be related with the reduction of free cobalt in composite.
The reduction of density can be related with the appearance of the non magnetic phases and reduction the hardness is related the reduction of density.
The hardness increase with the reduction of the particle size (pores reduction), this also originates an increase in the coercitive field.
Third edition, publisher by International Carbide Data.
The reduction of the coercitive field with milling time increase can be related with the reduction of free cobalt in composite.
The reduction of density can be related with the appearance of the non magnetic phases and reduction the hardness is related the reduction of density.
The hardness increase with the reduction of the particle size (pores reduction), this also originates an increase in the coercitive field.
Third edition, publisher by International Carbide Data.
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: 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: October 2014
Authors: A. Rashid A. Aziz, Morgan R. Heikal, Wasiu B. Ayandotun
There was a reduction in the unburnt hydrocarbons (THC) and carbon monoxide (CO) emissions by 15% and 89% respectively, but the NOx emissions increased by 78%.
HC emissions were found to decrease linearly with increasing N2 dilution and for a given quantity of fuel, the emissions reduction was at a constant amount.
Table 1: Engine specifications Displacement volume 399.25 cm3 Cylinder Bore 76 mm Cylinder Stroke 88 mm Compression Ratio 14:1 Exhaust Valve Closed 350o BTDC Exhaust Valve Open 225o BTDC Inlet Valve Open 12o BTDC Inlet Valve Closed 132o BTDC Dynamometer Direct Current with maximum reading is 50 Nm The operation of the engine used for the experimental work was managed and controlled by a PC-based data acquisition and control system.
For the exhaust emissions there were significant reductions in the emissions of CO and THC while NOx was on the increase at about 20% CO2 proportion in the mixture.
These findings, if implemented, will assist sustainable developments in the country through reductions in the consumption of crude oil.
HC emissions were found to decrease linearly with increasing N2 dilution and for a given quantity of fuel, the emissions reduction was at a constant amount.
Table 1: Engine specifications Displacement volume 399.25 cm3 Cylinder Bore 76 mm Cylinder Stroke 88 mm Compression Ratio 14:1 Exhaust Valve Closed 350o BTDC Exhaust Valve Open 225o BTDC Inlet Valve Open 12o BTDC Inlet Valve Closed 132o BTDC Dynamometer Direct Current with maximum reading is 50 Nm The operation of the engine used for the experimental work was managed and controlled by a PC-based data acquisition and control system.
For the exhaust emissions there were significant reductions in the emissions of CO and THC while NOx was on the increase at about 20% CO2 proportion in the mixture.
These findings, if implemented, will assist sustainable developments in the country through reductions in the consumption of crude oil.
Online since: September 2004
Authors: Alan MacBeath, Lorna Smith, Margaret Lucas, Andrea Cardoni
The models are compared with the experimental data collected from
ultrasonic bone cutting experiments.
Although the proposed cutting mechanism is supported by the data, the blade gain is insufficient to enable through cutting of long bone or other difficult to cut materials.
The bone specimens were assumed to be isotropic and the mechanical properties were determined from experiments and previously published data [7].
Using an average of the experimental data allows a single K1C value to be adopted for FE simulations but with the consequence that the results can only be described as typical of bone and cannot be directly compared with a particular set of measured data.
Fig. 2 (a) FE model of CT specimen; (b) Experimental and FE data of ultrasonic cutting amplitude for CT specimens under different static loads Although the blade initiated a crack in the specimens for all the experiments, the data with no applied static load, P, were achieved experimentally by using the blade at the limit of its amplitude capability.
Although the proposed cutting mechanism is supported by the data, the blade gain is insufficient to enable through cutting of long bone or other difficult to cut materials.
The bone specimens were assumed to be isotropic and the mechanical properties were determined from experiments and previously published data [7].
Using an average of the experimental data allows a single K1C value to be adopted for FE simulations but with the consequence that the results can only be described as typical of bone and cannot be directly compared with a particular set of measured data.
Fig. 2 (a) FE model of CT specimen; (b) Experimental and FE data of ultrasonic cutting amplitude for CT specimens under different static loads Although the blade initiated a crack in the specimens for all the experiments, the data with no applied static load, P, were achieved experimentally by using the blade at the limit of its amplitude capability.
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.