Yuncheng Polytechnic College

Yuncheng, China

Yuncheng Polytechnic College

Yuncheng, China

Time filter

Source Type

Lu H.,Yuncheng Polytechnic College | Lu H.,Northeastern University China | Liu H.,Northeastern University China | Song H.,Northeastern University China | And 2 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2015

Strip casting has a unique advantage in manufacturing grain-oriented silicon steels. A number of works concerning the fundamental research and the application of strip casting have been carried out both at home and abroad. However, they are still in the pilot phase. In China, Hi-B grain-oriented silicon steels with the B8 up to 1.94 T have been produced under laboratory conditions based on strip casting technology. The technical difficulties of manufacturing grain-oriented silicon steel by using strip casting were the control of solidification microstructure, inhibitor precipitation, origin of Goss texture, cold workability and so on. This paper summarizes the latest domestic and foreign research status of grain-oriented silicon steel based on strip casting around the key points and difficulties of the process. The recommendations for further study are listed in the final section. ©, 2015, Journal of Functional Materials. All right reserved.


Song H.,Northeastern University China | Liu H.,Northeastern University China | Lu H.,Northeastern University China | Lu H.,Yuncheng Polytechnic College | And 2 more authors.
2015 IEEE International Magnetics Conference, INTERMAG 2015 | Year: 2015

A 0.23mm-thick grain-oriented silicon steel sheet was successfully produced based on strip casting. The evolutions of microstructure and texture were briefly investigated. It was shown that the as-cast strip exhibited strong {001}<0vw> texture. Goss texture was absent in the hot rolled strip, which was distinct from the well accepted results that Goss texture originated during hot rolling. After the cycle of first stage cold rolling, intermediate annealing, second stage cold rolling and primary annealing, the strip exhibited weak α-fiber texture and relatively strong γ-fiber texture. This result was significantly different from previous results that Goss texture was the most populous component in the primary recrystallization texture of two-stage route in conventional process. After secondary recrystalization annealing, the magnetic induction B8 was as high as 1.84T. © 2015 IEEE.


Zhang H.,Heilongjiang University | Zhang H.,Yuncheng Polytechnic College | Li Y.,Heilongjiang University | Li Y.,Anhui University of Science and Technology | And 2 more authors.
Modern Tunnelling Technology | Year: 2015

In this paper, based on the Zienkiewicz-Pande criterion, which is a modification of the Mohr-Coulomb criterion, and considering the effects of intermediate principal stress, analytic solutions for the elastic-plastic stress of the surrounding rock of a tunnel/roadway, as well as the radius and displacement of the plastic zone, are deduced using an equilibrium equation. The influence of the intermediate principal stress on the Zienkiewicz-Pande criterion solution is analyzed through a given example, and the plastic zone radius and the distribution of surrounding rock stress are analyzed based on the Zienkiewicz-Pande and Mohr-Coulomb criterions, respectively, showing that the Zienkiewicz-Pande criterion is applicable to the elasto-plastic analysis of the surrounding rock in a tunnel/roadway. ©, 2015, Editorial Office of "Modern Tunnelling Technology". All right reserved.


Song H.-Y.,Northeastern University China | Liu H.-T.,Northeastern University China | Lu H.-H.,Yuncheng Polytechnic College | Liu W.-Q.,Northeastern University China | And 3 more authors.
IEEE Transactions on Magnetics | Year: 2015

A 0.23 mm thick grain-oriented silicon steel sheet was successfully produced based on strip casting and two-stage cold rolling route. The evolutions of microstructure and texture along the complete processing route were briefly investigated. It was shown that the as-cast strip was composed of coarse ferrite grains and martensite, and the texture was mainly characterized by strong 001 0vwrangle texture. Goss texture was absent in the hot-rolled strip, which was distinct from the well accepted results that Goss texture had its origin during hot rolling. After the cycle of the first-stage cold rolling, an intermediate annealing, the second-stage cold rolling, and a primary annealing, the strip exhibited a fully recrystallized microstructure with a weak α-fiber texture and a relatively strong gamma-fiber texture. Goss texture was not observed through the thickness of the primary annealed strip. This was significantly different from the previous results that Goss texture was the most populous component in the primary recrystallization texture of two-stage route in conventional process. After secondary recrystalization annealing, the magnetic induction B of the sheet was as high as 1.84 T. © 1965-2012 IEEE.


Tsai C.-S.,Chienkuo Technical University | Yao A.,Yuncheng Polytechnic College | Radakovic N.,Chienkuo Technical University | Wei H.-Y.,Chienkuo Technical University | And 2 more authors.
Proceedings - 2016 IEEE International Symposium on Computer, Consumer and Control, IS3C 2016 | Year: 2016

Robotics is an interdisciplinary science and should be treated as a part of System Integration. Automotive industry with its assembly line requirements continues to be the main robot consumer. Besides automotive industry, other sectors like for instance metal machining, health and semiconductor industry are interwoven with robotics. Robot is a high value added product so it is worth of development. Therefore, goal of this paper is to demonstrate how to design fully operational rotary delta robot. Firstly, we elaborate kinematic model of the Delta type robot and then construct me-chanical structure thus producing a simulation model of delta robot. Finally, delta robot is simulated and the results confirm the model is OK. © 2016 IEEE.


Lu H.-H.,Yuncheng Polytechnic College | Liu H.-T.,Northeastern University China | Song H.-Y.,Northeastern University China | Liu Z.-Y.,Northeastern University China
Zhuzao/Foundry | Year: 2015

Grain-oriented silicon steel as-cast strips were made by using of twin-roll strip continuous casting. The microstructure and texture of as-cast strip were investigated. The results show that the microstructure of the as-cast strip consisted of ferrite matrix and martensite, and the heterogeneity of the texture and the microstructure demonstrated the obvious gradient through the thickness direction. In the case of superheat 30℃, grains oriented randomly. In the case of superheat 50℃, columnar dendritic was observed and the solidification texture of {100}(0vw) fiber evolved strongly. ©, 2015, Chinese Mechanical Engineering Society. All right reserved.


Zhao Z.,Yuncheng Polytechnic College | Jing L.,Southwest Jiaotong University | Pei Q.,Yuncheng Polytechnic College | Ma H.W.,Jinan University | Wang Z.H.,Taiyuan University of Technology
Strength of Materials | Year: 2016

Dynamic split tensile tests of reinforced concrete were carried out using the split Hopkinson pressure bar experimental technique to determine the failure modes of reinforced concrete at different strain rates, and the effect of reinforcement ratio and reinforcement layouts on the dynamic performance. The specimens with nine reinforcement ratios were used in the tests. Experimental results show that the tensile strength of reinforced concrete exhibits a critical strain rate, beyond which a larger increase in dynamic strength of specimens occur. The dynamic split tension strength of reinforced concrete is demonstrated to be greater than the plain concrete with the same strength grade over the range of tested strain rates. The results also indicate that the dynamic split tension strength of specimens enhances with the increase in the reinforcement ratio. These findings are instrumental to guide the structural design of reinforced concrete in engineering applications. © 2016 Springer Science+Business Media New York

Loading Yuncheng Polytechnic College collaborators
Loading Yuncheng Polytechnic College collaborators