Baotou Vocational and Technical College

Baotou, China

Baotou Vocational and Technical College

Baotou, China
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He P.,Baotou Vocational and Technical College | Wen J.-Q.,Dalian Ocean University | Zhao M.-X.,Harbin Institute of Technology
Guangzi Xuebao/Acta Photonica Sinica | Year: 2013

Simple structure, orderliness and few gray level of SMD (surface mounted device) resistor image are the prominent feature of SMD resistor units array, through binary resistor image, edge detection, line detection, with the correlation coefficient as a criterion for defects. A method for resistor flaw detection was proposed based on subgraph projection matching. The feature of resistor flaw was extracted on basis of the method of PCA (principal component analysis). Then the resistor flaw would be classified by SVM (support vector machine). At last, an experimental platform was built and the result verifies that the detection rate employed the proposed method is 92.5%, and the method meets the requirements on high accuracy and speed.


Wang B.Y.,Baotou Vocational and Technical College | Guo M.J.,Hebei University of Science and Technology
Applied Mechanics and Materials | Year: 2014

This paper proposes a kind of method of socket programming combining matlab and VB based on COM component aimed at socket programming. An example has been illustrated to declare the application of this method. It shows user-friendly graphics interface applied in VB, and graphic display in matlab. © (2014) Trans Tech Publications, Switzerland.


Shen S.,Baotou Vocational and Technical College | Shen S.,Inner Mongolia University of Technology | Yang M.,Baotou Vocational and Technical College | Zhang L.,Inner Mongolia University of Technology
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2016

Effects of Gd alloying on microstructure and corrosion resistance of as-cast AM50 alloy was investigated by optical microscope, X-ray diffraction and scanning electron microscope. The results show that the AM50 alloy is composed of α-Mg solid solution and the primary β-Mg17 Al12 phase, and the main phases in the Gd alloyed AM50 alloy are α-Mg, β-Mg17 Al12, Al2Gd3 and Al0.4GdMn1.6. The addition of Gd element can play a role in fine grain strengthening, purification and dispersion strengthening. The corrosion resistance of Gd alloyed AM50 alloy is superior to those of AM50 alloy, and the AM50-2Gd alloy has the desirable corrosion resistance. © 2016, Journal Office of Special Casting and Nonferrous Alloys. All right reserved.


Ma S.,Baotou Vocational and Technical College | Ma S.,Inner Mongolia University of Science and Technology | Jin Z.,Inner Mongolia University of Science and Technology
Jinshu Rechuli/Heat Treatment of Metals | Year: 2014

The SPCC cold-rolling steel plate with 0.55 mm in thickness produced by CSP method were recrystallization annealed by different processes, and the values r, Δr and so on were measured. The effect of temperature on the texture and deep drawability during annealling was studied. The results show that the deep drawability increases greatly when the first step holding temperature condition in annealing is controlled strictly. The drawability is best when the temperature for recrystallization nucleation just finished is set as the first step holding temperature.


Ma S.,Baotou Vocational and Technical College | Ma S.,Inner Mongolia University of Science and Technology | Jin Z.,Inner Mongolia University of Science and Technology
Jinshu Rechuli/Heat Treatment of Metals | Year: 2012

The evolution of microstructure and recrystallization texture of CSP cold-rolled sheet during annealing were investigated by EBSD. The results show that recrystallization of the tested steel is oriented nucleation. the cold-rolling texture are mainly the {111}<110>, {111}<112> and {001}<110>. The new recrstal grains are mainly the {111}<112> and {111}<110>, this two textures are generated each other. The texture {111}<112> and {111}<110> easily occurs in recrystalline temperature, the texture {112}<110> is generated during grain growth which have no effect on deep drawing property. So it is favorable to increase deep drawing property that the {111} texture formed in recrystallization temperature is stability existed and does not changed.


Hou X.-M.,Baotou Vocational and Technical College | Chen X.-Y.,Baotou Beifang Benchi Heavy Duty Truck Co. | Liu S.-F.,No 52 Institute Of China Ordnance Industry
Jinshu Rechuli/Heat Treatment of Metals | Year: 2011

Tooth surface peeling of the coach driving screw bevel gear was analyzed by means of macroscopic fracture observation, hardness test, microstructure examination. The result shows that the main reason of early peeling is the exceeding contact stress at the top of tooth caused by abnormal contact at the tooth surface. The weakened grain boundary and the thinner carburized layer aggravate the early peeling.


Yan S.,Baotou Vocational and Technical College
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2011

Alloy element and RE were added into the partial model of LFC casting to meet the special properties of partial component during LFC process. Alloy elements and RE can be dissolved into the corresponding position of the LFC castings. The results show that partial alloying treatment can effectively improve the partial special property requirements of LFC components.


Li D.,Beijing Institute of Technology | Li F.,Beijing Institute of Technology | Chen Y.,Beijing Institute of Technology | Wang D.,Baotou Vocational and Technical College
WIT Transactions on Information and Communication Technologies | Year: 2014

The introductory course of computer science plays an important role for both computing majors and nonmajors. However, the curriculum development for this course varies a lot across the world. In this paper, the introductory course of computer science is compared between the universities in the United States and in China, with respect to the course requirements, course syllabus, and course grading. © 2014 WIT Press.


Li Z.,Inner Mongolia University | Niu J.H.,Inner Mongolia University of Technology | Li H.G.,Baotou Vocational and Technical College
Applied Mechanics and Materials | Year: 2014

Sub-frame of dump truck is a special equipment, which is used to avoid carriage of goods having stress concentration on the chassis frame, and its design rationality have very important influence on the using performance of whole vehicle. In this paper, according to the phenomenon that the sub-frame of a company's mining heavy-duty dump trucks often appear crack and even rupture, using finite element analysis method, the sub-frame has been carried on the static analysis in both cases that the normal load and eccentricity loading when unloading goods. The analysis result shows that the reason of crack and even rupture of secondary frame is stress concentration occurs in the shaft hole connecting balanced frame with sub-frame because of lateral centroid of goods deviating from the longitudinal symmetry plane caused by goods loading or overloading and maximum stress is beyond the material yield limit. The improvement suggestions of sub-frame design are put forward finally. © (2014) Trans Tech Publications, Switzerland.


Yao M.,Baotou Vocational and Technical College
International Journal of Security and its Applications | Year: 2014

In this paper, we propose a multi-layer selection and mining methods for effective intrusion detection, which utilize feature selection, classification, clustering and evidence theory for decision making. In the experiments, DARPA KDD-99 intrusion detection data set is used for evaluation. It shows that our proposed classifier not only classifies and separates the normal and abnormal data, but also reduces false positive and false negative besides detecting all four kinds of attacks. © 2014 SERSC.

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