Zilang Vocational Technical College

Nantong, China

Zilang Vocational Technical College

Nantong, China

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Li Z.N.,Zilang Vocational Technical College | Zhou L.,Shanghai JiaoTong University
Advanced Materials Research | Year: 2013

In the paper, researched a fault diagnosis system which is used in the ICM (Intelligent Coiling Machine)successfully, it is a kind of fault diagnosis system that uses compactwavelet neural network wavelet neural network as the intelligent core and has the PFA(Principal Factor Analysis) pretreatment function. Through innovative designing and carefully plotted monitoring ways and methods in the system, as a result the fault diagnosis rate of accuracy is high, fault-tolerant ability is strong, the processing speed is quick, and the system work safely and reliably.It has achieved the anticipated goal and the effect. © (2013) Trans Tech Publications, Switzerland.


Sun G.F.,Nanjing Southeast University | Sun G.F.,Jiangsu University | Zhou R.,Jiangsu University | Zhang Y.K.,Nanjing Southeast University | And 4 more authors.
Optics and Laser Technology | Year: 2014

Wear resistant layers on nodular cast iron chains with C-B-W-Cr powders were fabricated by laser surface alloying (LSA). Microstructure, phases and lattice parameters, were investigated by means of optical microscopy, scanning electron microscopy, transmission electron microscopy and X-ray diffractometry. Micro-, nano-hardness and elastic modulus were measured with a Vickers microhardness tester and a nano-indendation tester. Lubricant sliding wear performance was performed on a ball-on-disk apparatus in ambient air using the straight line reciprocating wear form. Results indicate that microstructure of the alloyed layers changes from hyper-eutectic to hypo-eutectic, varing with laser specific energy. Nano-grain size and micro-hardness decrease while martensite lattice parameters increase with laser specific energy. Existence of graphite in the substrate increases the carbon content in the retained austenite to 1.59 wt%. Nano-hardness and elastic modulus of the alloyed layers are close. Friction and wear properties of the layers are improved by LSA compared with the substrate. Wear mechanism of them is illustrated. © 2014 Elsevier Ltd.


Li Z.N.,ZiLang Vocational Technical College | Huang T.,Wuhan University of Technology
Applied Mechanics and Materials | Year: 2013

Using ultrahigh pressure of narrow vein reverse corona cracking method to generate high concentrations (electron density of 1011m-3 to1012 m-3) at low temperature (< 100 degrees C) plasma energy (energy 16 to 18 electron volts), purifying harmful ingredient of automobile tail gas on the automobile exhaust in the modern engineering, electrical, magnetic, optical, chemistry and other disciplines of the combination of research topic, also is the purification of automobile exhaust gas of a new idea, new method, new device, not only has very important academic value, but also has very important practical significance in engineering. This study has been made of high voltage pulse generator developed important level sex achievement. © (2013) Trans Tech Publications, Switzerland.


Zhou R.,Jiangsu University of Science and Technology | Zhou R.,Jiangsu University | Diao X.G.,CITIC Heavy Industries Co. | Chen J.,Jiangsu University of Science and Technology | And 3 more authors.
Materials Science Forum | Year: 2014

Effects of sintering temperatures on the microstructure and mechanical performance of SPS M3:2 high speed steel prepared by spark plasma sintering was studied. High speed steel sintering curve of continuous heating from ambient temperature to 1200°C was estimated to analyze the sintering processes and sintering temperature range. The sintering temperature within this range was divided into groups to investigate hardness, relative density and microstructure of M3:2 high-speed steel. Strip and quadrate carbides were observed inside the equiaxed grains. SPS sintering temperature at 900°C can lead to nearly full densification with grain size smaller than 20μm. The hardness and bending strength are higher than that of the conventionally powder metallurgy fabricated ones sintered at 1270°C. However, fracture toughness of the high speed steel is lower than that of the conventional powder metallurgy steels. This can be attributed to the shape and distribution of M6C carbides which reduce the impact toughness of high speed steels. © (2014) Trans Tech Publications, Switzerland.


Zhang Y.,Chuzhou University | Deng J.,Chuzhou University | Wang J.,Chuzhou University | Wang Y.,Zilang Vocational Technical College | Ni S.,Chuzhou University
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | Year: 2012

The Yb3+/Er3+ co-doped Na(Y1.5Na0.5)F6 one dimensional nanorods were synthesized by a facile hydrothermal method. The X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence spectra were used to characterize the as-prepared samples. The cell parameter of the nanocrystals is a=b=0.600 nm, c=0.352 nm. Under 980 nm excitation, intense upconversion emissions from red to ultraviolet were observed. The red, green and near-ultraviolet emission bands were attributed to the 4F9/2→4I15/2, (2H11/2, 4S3/2)→4 I15/2 and (2G11/2/2 H9/2)→4I15/2 transition of Er3+, respectively. In terms of the experiment results, the upconversion mechanisms were also discussed.


Zhang Y.Y.,Chuzhou University | Wang Y.,ZiLang Vocational Technical College | Deng J.Q.,Chuzhou University | Wang J.,Chuzhou University | Ni S.C.,Chuzhou University
Optics Communications | Year: 2014

Nanocrystals of up-conversion (UC) phosphor Yb3+/Tm3+ co-doped NaYF4 are prepared by a facile hydrothermal method using oleic acid as a stabilizing agent. The as-prepared nanocrystals are of hexagonal phase, and have tube-like morphology and strong ultraviolet (UV) and blue UC fluorescence intensity, which have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and luminescence spectroscopy. The effect of Yb3+ concentration on the UC emission properties is also analyzed. Our results reveal that the intensity of emission peaks can be controlled by varying the Yb3+ concentration and these NaYF 4 nanotubes are highly efficient host material. The as-prepared NaYF4 nanotubes show potential applications in UV compact solid state lasers and multi-channel fluorescent label. © 2013 Elsevier B.V.


Sun J.-H.,Zilang Vocational Technical College | Gu H.,Zilang Vocational Technical College | Yuan G.-D.,Zilang Vocational Technical College
Advanced Materials Research | Year: 2013

Super plastic behavior of the commonly as-extruded Mg-3Zn-1Al (ZA31) magnesium alloy is investigated at temperatures ranging from 593 to 623K and strain rates ranging from 8×10-5 to 10-3s-1. The results show that the alloy exhibits excellent super plasticity and the maximum elongation-to-failure reaches 220.4%. The alloy also shows a high strain rate sensitivity exponent of 0.38. Microstructure observations suggest that grain boundary sliding (GBS) with cavity coordination makes a substantial contribution to the super plastic deformation. © (2013) Trans Tech Publications, Switzerland.


Sun J.-H.,Zilang Vocational Technical College | Gu H.,Zilang Vocational Technical College | Yuan G.-D.,Zilang Vocational Technical College
Advanced Materials Research | Year: 2013

Recent studies indicated that Mg-(7-11)Zn-4Al (the composition of the alloys in the present paper are given in weight percentage.) based alloys exhibited good creep resistance and additions of trace alkaline elements to the alloys further improved the mechanical properties at elevated temperatures. In order to optimize the zinc concentration and reveal the effect of small amount of alkaline element additions to Mg-Zn-Al ternary alloys on their microstructure and elevated temperature creep resistance, five alloys with compositions of Mg-7Zn-4Al, Mg-9Zn-4Al, Mg-11Zn-4Al, Mg-11Zn-4Al-0.2Ca and Mg-11Zn-4Al-0.6Ca, respectively, were prepared in the present investigation and the microstructure and creep properties of these alloys were studied. © (2013) Trans Tech Publications, Switzerland.


Sun J.-H.,Zilang Vocational Technical College | Gu H.,Zilang Vocational Technical College | Yuan G.-D.,Zilang Vocational Technical College
Advanced Materials Research | Year: 2013

The microstructures of a series of high Zn magnesium alloys Mg-(7-11) Zn-(2-6) Al alloys were clarified, and effects of Zn and Al concentration about the ZA system alloys on the microstructure and properties were also investigated. For Mg-(7-11)Zn-4Al alloys with the Zn content increase, improved creep resistance is obtained due to block τ-Mg32(Al, Zn)49 phase, with severe reduction in ultimate strength and ductility, and the best creep property is obtained with 11wt.% Zn concentration. However, a bit increasing Al content of Mg-9Zn-(2-6)Al alloys contributes to the improvement in the ambient and elevated-temperature yield strength, but seriously deteriorates the creep properties for the formation of lamellar φ-Al2Mg5Zn2 eutectics or Mg51Zn20 phase. © (2013) Trans Tech Publications, Switzerland.


Wang C.G.,Zilang Vocational Technical College | Yue Y.F.,Zilang Vocational Technical College
Applied Mechanics and Materials | Year: 2013

This paper on China's Jiangsu Provincial Higher Occupation Education Training Base Construction: PV (PhotoVoltaic) &WP (Wind Power) new energy technology training base construction as the breakthrough point, emphatically discusses the connotation and characteristics of the content characteristics of base construction. The base of the scientific connotation involves a number of disciplines and a variety of engineering technology, and these disciplines and engineering technology are permeated each other and mutual support. As the base of the constructor and the responsible person, experienced and the main process of each key link of the base construction, feel much deep, the writing of this thesis, and colleagues communicate, in order to enlighten. © (2013) Trans Tech Publications, Switzerland.

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