In the work of numerical control reformation of general machine tool, the installation and debugging of machine tool is a crucial part. For the C6132 machine tool, and make the use of electrical and mechanical alignme...In the work of numerical control reformation of general machine tool, the installation and debugging of machine tool is a crucial part. For the C6132 machine tool, and make the use of electrical and mechanical alignment, parameter adjusting, numerical control lathe accuracy debugging and performance examination has been used to finish a series of tailing in the work of numerical control reformation of general machine tool. In this paper, the detailed process of electrical and mechanical alignment, parameter adjusting, numerical control lathe accuracy debugging and performance examination has been demonstrated, meanwhile, the specific operational approach of these work programs has been discussed. Therefore, the present results provides essential reference and approach for the numerical control reformation of general machine tool.展开更多
The electrical and mechanical properties of polyaniline (PANI) films synthesized by the presence of the selected neutral salts in the polymerization were measured as a function of the properties and the concentration ...The electrical and mechanical properties of polyaniline (PANI) films synthesized by the presence of the selected neutral salts in the polymerization were measured as a function of the properties and the concentration of the selected neutral salts, and the protonation state. It was found that both the electrical and mechanical properties of PANI films were enhanced by adding neutral salts in the polymerization. The adding of the neutral salts in the polymerization resulted in extended conformation of polymer chain and increasing of molecular weight of PANI, which may be the reasons why the electrical and mechanical properties of PANI films were improved by the presence of neutral salts in the polymerization. (Author abstract) 11 Refs.展开更多
The hydropower installed capacity in China exceeded 100 GW by the end of 2004. With the develop-ment of hydropower construction cause, the contingents of electrical and mechanical installation also grew steadily.The i...The hydropower installed capacity in China exceeded 100 GW by the end of 2004. With the develop-ment of hydropower construction cause, the contingents of electrical and mechanical installation also grew steadily.The installation and debugging techniques made great strides in aspects of different conventional hydrogeneratorsets, reversible pumped-storage units and their rotor spiders, runners, bearings, penstocks as well as controlequipment, such as computerized governors, intelligent monitoring devices. Major technical innovations werebrought about in the electrical and mechanical installation. For an arduous task to construct hydropower projectsof over 50 GW confronts hydropower installation enterprises at the beginning of 21 st century, the installationtechnologies will certainly develop around the projects.展开更多
Mechanical properties and microstructure of multifunctional composites produced with palm kernel shell ash nano particle(PKSAnp)-A356 alloy composites was studied.The composites were produced using Double layer feedin...Mechanical properties and microstructure of multifunctional composites produced with palm kernel shell ash nano particle(PKSAnp)-A356 alloy composites was studied.The composites were produced using Double layer feeding stir casting method(DLF-SCM) by adding 1 wt%-4 wt.% PKSAnp.The microstructure,density,electrical and mechanical properties were determined.The results shows that there was a uniform distribution of the PKSAnp in A356 alloy.The mismatch at the interface between the PKSAnp and A356 alloy was 4.26%.Improvement of 30.47%,41.91%,49.52%,40.90% and 65.09% were obtained for hardness values,tensile,yield strength,%elongation and impact energy at 4 wt% PKASnp.The work has established that the developed composites can be used for multifunctional applications where combination of toughness and strength is vital.展开更多
文摘In the work of numerical control reformation of general machine tool, the installation and debugging of machine tool is a crucial part. For the C6132 machine tool, and make the use of electrical and mechanical alignment, parameter adjusting, numerical control lathe accuracy debugging and performance examination has been used to finish a series of tailing in the work of numerical control reformation of general machine tool. In this paper, the detailed process of electrical and mechanical alignment, parameter adjusting, numerical control lathe accuracy debugging and performance examination has been demonstrated, meanwhile, the specific operational approach of these work programs has been discussed. Therefore, the present results provides essential reference and approach for the numerical control reformation of general machine tool.
基金The work was supported by the National Natural Science Foundation of China and the Chinese Academy of Sciences
文摘The electrical and mechanical properties of polyaniline (PANI) films synthesized by the presence of the selected neutral salts in the polymerization were measured as a function of the properties and the concentration of the selected neutral salts, and the protonation state. It was found that both the electrical and mechanical properties of PANI films were enhanced by adding neutral salts in the polymerization. The adding of the neutral salts in the polymerization resulted in extended conformation of polymer chain and increasing of molecular weight of PANI, which may be the reasons why the electrical and mechanical properties of PANI films were improved by the presence of neutral salts in the polymerization. (Author abstract) 11 Refs.
文摘The hydropower installed capacity in China exceeded 100 GW by the end of 2004. With the develop-ment of hydropower construction cause, the contingents of electrical and mechanical installation also grew steadily.The installation and debugging techniques made great strides in aspects of different conventional hydrogeneratorsets, reversible pumped-storage units and their rotor spiders, runners, bearings, penstocks as well as controlequipment, such as computerized governors, intelligent monitoring devices. Major technical innovations werebrought about in the electrical and mechanical installation. For an arduous task to construct hydropower projectsof over 50 GW confronts hydropower installation enterprises at the beginning of 21 st century, the installationtechnologies will certainly develop around the projects.
基金The authors would like to acknowledge Tertiary Education Trust Fund(TETFund)Nigeria for providing financial aid for this project under the project number:TETFUND/DESS/UNI/NSUKKA/2017/RP/VOL.I.
文摘Mechanical properties and microstructure of multifunctional composites produced with palm kernel shell ash nano particle(PKSAnp)-A356 alloy composites was studied.The composites were produced using Double layer feeding stir casting method(DLF-SCM) by adding 1 wt%-4 wt.% PKSAnp.The microstructure,density,electrical and mechanical properties were determined.The results shows that there was a uniform distribution of the PKSAnp in A356 alloy.The mismatch at the interface between the PKSAnp and A356 alloy was 4.26%.Improvement of 30.47%,41.91%,49.52%,40.90% and 65.09% were obtained for hardness values,tensile,yield strength,%elongation and impact energy at 4 wt% PKASnp.The work has established that the developed composites can be used for multifunctional applications where combination of toughness and strength is vital.
