Liaoshen Industries Group Co.

China

Liaoshen Industries Group Co.

China
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Guo S.-S.,Liaoshen Industries Group Co. | Yang R.-J.,China Academy of Engineering Physics | Wang L.-M.,Nanjing University of Science and Technology
Dandao Xuebao/Journal of Ballistics | Year: 2013

In order to obtain the optimal glide project trajectory, the extend-range trajectory optimal model was established based on the partile trajectory model of guided projectile, the flight state constraint conditions and the objective function of maximum range. Accurate optimal trajectory can't be obtained by traditional uniform parameterization method. Aiming at this problem, the control horizon was divided into several time stages of varying lengths and the length of each time period was defined as optimization parameters. The glide project trajectory was optimized by time-scaling non-uniform parametric method combined with sequadratic programming. The simulation results show that, compared with traditional methods, the project trajectory designed by this approach has a farther range, a higher terminal speed and more advantages of ballistic performance.


Wang Y.,Shenyang University of Technology | Wang Y.,Inner Mongolia University for Nationalities | Liang L.,Liaoshen Industries Group Co. | Yu B.,Shenyang University of Technology | And 2 more authors.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2013

An experimental equipment with inclined plate cooling and shearing has been developed to prepare semi-solid ZL104 alloy slurry. The effects of inclined plate angle on microstructure refinement and spheroidization in semi-solid ZL104 alloy were investigated. The results show that the inclined plate angle has remarkable effect on physical metallurgy and shear action of ZL104 alloy. Fine spherical grain in the semi-solid ZL104 alloy slurry can be obtained in range of 30°~45°, and the major grain equivalent diameters are less than 43 μm and more than 40% of the grain shape factor is in 0.75 above at 45°, exhibiting better grain fine degree and roundness.


Luo X.-C.,Nanjing University of Science and Technology | Yao W.-J.,Nanjing University of Science and Technology | Xu W.-K.,Liaoshen Industries Group Co. | Zhuo C.-F.,Nanjing University of Science and Technology | And 2 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2015

In order to research the effect of combustion rate of the propellant on the operation process and the firing range of base bleed projectile, the flight ballistic of base bleed projectile was solved by using the computational aerodynamics coupled with particle trajectory. The changes of operation parameter, operation status, flow filed of base bleed projectile with time in the drag reduction stage were studied. The effect of combustion rate of propellant on the operation process and firing range of base bleed projectile were analyzed in detail. The simulation results are in good agreement with the target range test results of the standard base bleed projectile, indicating that the calculation model established is correct and reasonable. When the combustion rate adjustment coefficient changes from 0.8 to 1.2, the combustion time decreases from 36.4 s to 18.4 s, firing range decreases from 38.12 km to 36.21 km and the extended-range rate decreases from 33.32% to 26.64%. With the increasing of time, the base bleed parameters of the base bleed projectile with different combustion rate increase first and then decrease during the drag reduction period. The bleed mass flow rate of base bleed projectile with high combustion rate is larger than that of the base bleed projectile with low combustion rate, but there is no obvious increase of reduction drag effect. © 2015, Institute of Chemical Materials, China Academy of Engineering Physics. All right reserved.


Zhuo C.-F.,Nanjing University of Science and Technology | Yao W.-J.,Nanjing University of Science and Technology | Wu X.-S.,Nanjing University of Science and Technology | Xu W.-K.,Liaoshen Industries Group Co. | Feng F.,Nanjing University of Science and Technology
Binggong Xuebao/Acta Armamentarii | Year: 2015

Based on the advantages of computational fluid dynamics and the firing range prediction of base bleed projectile, the flight ballistic trajectory of base bleed projectile is solved by using the computational aerodynamics coupled with particle trajectory, and the change laws of operating parameter, operating state, and flow filed of base bleed projectile with time are obtained. The results show that the base bleed parameters of the base bleed projectiles launched at different altitudes increase with the increase in time in early drag reduction stage, but it varies slowly with the increase in time in the late drag reduction stage; with the increase in altitude for launching, the drag coefficient of the base bleed projectile increases slowly with the increase in time in the drag reduction stage, and even it decreases with the time. For the base bleed projectile launching at altitude of 0 km, the base bleed device in the early drag reduction stage operates in the mode of base bleed. And in the late stage, the base bleed device operates between base bleed mode and rocket mode. © 2015, China Ordnance Society. All right reserved.


Guo C.,Shenyang Ligong University | Guo C.,Northeastern University China | Jian Z.,Shenyang Ligong University | Jian Z.,Northeastern University China | And 4 more authors.
Advanced Materials Research | Year: 2012

Cr coatings were deposited on AISI H13 steel substrates by means of electrospark deposition (ESD). The coatings were characterized in terms of their microstructure, hardness, friction and wear behavior and high-temperature oxidation resistance. Micro-indentation and tribometer testers were employed to measure the mechanical properties of Cr coatings and AISI H13 steel. The results showed that the hardness of the coatings ranged from 600 to 660 HV, with a higher value than that of AISI H13 steel (510 HV). The coefficient of steady-state friction of the coatings against 45-carbon-steel balls ranged from 0.23 to 0.27, with a lower value than that of AISI H13 steel (0.62-0.68). The isothermal oxidation behavior of the coatings at 850°C was studied in comparison with AISI H13 steel substrates. The results indicated that Cr coatings substantially increase the high-temperature oxidation resistance of AISI H13 steel and the oxidation process was retarded mainly by the presence of a Cr 2O 3 oxide scale on the coatings at 850°C for 100 hours. © (2012) Trans Tech Publications.


An X.,Shenyang Ligong University | Li L.,Shenyang Ligong University | Liu X.,Liaoshen Industries Group Co.
Jixie Qiangdu/Journal of Mechanical Strength | Year: 2013

The threaded connection of a special container is the part which has the biggest possibility to damage. Its strength is the key to ensure the safety of work. It can be done based on Saint-Venant principle to build axisymmetric finite element model and the three-dimension sub-models of both the equidistant straight threads and the spiral one with a thread angle. The effects of the material nonlinearity and the contact nonlinearity on the container should be taken into account. And the cutting boundary displacement of the overall model which is axial symmetry is used as the boundary displacement of the three-dimension sub-models. The comparative analyses of the results of their calculating stress distribution should be made in detail.


Wang M.,Shenyang Ligong University | Liu Q.,Shenyang Ligong University | Sun Y.-J.,Liaoshen Industries Group Co. | Che Y.-S.,Shenyang Ligong University | Jiang C.-Z.,Shenyang Ligong University
Wuji Cailiao Xuebao/Journal of Inorganic Materials | Year: 2013

Eu3+-doped BiVO4 photocatalyst was synthesized by complexing Sol-Gel method using citric acid as chelate, and characterized with X-ray photoelectron spectroscope(XPS), X-ray diffraction(XRD), scanning electron microscope(SEM), specific surface area (BET) and UV-Vis diffuse reflectance spectroscope(DRS). The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange (MO) solution under visible light. It revealed that pure BiVO4 and all the Eu3+ doped samples were monoclinic phase and no peaks of any other phases or impurities were detected. It was also found that doping Eu3+ increased the amount of V4 and oxygen vacancies. In addition, the light absorption edges of Eu3+ doped BiVO4 had extended a red shift compared with that of pure BiVO4. However, Eu3+ doping had little influence on morphology and specific surface area. The appropriate amount of Eu3+ doping could signifcantly increase the photocatalytic activity and the highest photocatalytic degradation rate was about 95% when the Eu3+ doping amount was 0.2%, which was more 62% than that of pure BiVO4 under 50 min visible light irridation.


Qin P.,Shenyang Jianzhu University | Chen H.,Shenyang Jianzhu University | Chen L.,Shenyang Jianzhu University | Wang C.,Shenyang Jianzhu University | And 4 more authors.
Clean Technologies and Environmental Policy | Year: 2013

This article studies the possibility of using heat pump instead of cooling tower to decrease temperature and recover waste heat of circulating cooling water of power system. Making use of heat transfer theory the article carried on analysis and calculation about recoverable waste heat of circulating cooling water in hot-stamping power system which includes hot-stamping, closing-in and extrusion intermediate frequency induction furnace. The results show that the whole process can recover a calorie which is 2.642 × 106 kJ per hour. Using the recycled calories can make 15.82 tons hot water per hour which is 60 C. So it can reduce burning capacity of coal 180.29 kg/h. The hot water can provide the needed water for production and workers bathing. This research shows that using heat pump to recover the waste heat of circulating cooling water is effectual. Realizing the use of waste heat, it can reduce pollution of condensing heat, reduce operating cost and noise of cooling tower, reduce site and the occupation of equipment, improve the production efficiency, and can also save the natural resources (fossil fuel-coal) and reduce the cost of needed hot water production. © 2013 The Author(s).

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