Taiyuan University of Technology

Chinese Academy of Sciences

Taiyuan University of Science and Technoloy

State Grid Shanxi Electric Power Research Institute

Cnooc New Energy Investment Co., Ltd.

Guangzhou Xiaopeng Autopilot Technology Co., Ltd.

Tao Wang

Zhongkai Ren

Qingxue Huang

Dongping He

Yuanming Liu

Jianchao Han

Yi Jia

Huidong Xu

Xiao Liu

Zhenhua Wang

Yaxing Liu

Peng Chen

Xiaobao Ma

Yunjie Ding

Ting Li

Yuan Lv

Linan Ma

Wenwen Liu

Shuaishuai Zhang

Hejun Zhu

Hui Niu

Guiping Jiao

Lifeng Ma

Lianyun Jiang

Yuncai Wang

Rongjun Wang

Duanqing Pei

Wei Zhang

Jingwei Zhao

Junxin Wei

Yizhi Zhang

Mingjiang Zhang

Jianzhong Zhang

Lijun Qiao

Qi Zhang

Jian Li

Hong Liu

Dong Wang

Zhiqiang Li

Yizhong Cao

Ziliang Li

Baoquan Jin

Yu Wang

Tao Liu

Liping Bian

Shufeng Wei

Ce Ji

Chaoran Ren

Wei Wang

Fanglin Li

Pingju Hao

Wei Shi

Zepeng Lu

Hefeng Wang

Jinzhu Zhang

Yu Chen

Ke Chen

Xiaoqiong Zhang

Xingcheng Wang

Yiping Wang

Zhenhao Yuan

Ran Li

Xinxin Liu

Ziheng Duan

Xiaobin Fu

Yanjun Wang

Xiaoxiong Ma

Yaguan Li

Qinkang Sun

Haoran Zhang

Changjiang Zhang

Caiyun Zhao

Changjiang Wang

Zhihui Xu

Qingshan Ding

Maosen Yin

Yanjie Zhang

Xiaoyan Xiong

Lu Bai

Gang Dai

Zhihua Wang

Litao Gou

Sha Li

Miao Guo

Xinlong Zhang

Shuzhi Zhang

He Li

Yue Wu

Hanqing Shi

Lixin Wu

Wanwan Fan

Zhiqi Xu

Ming Wang

Dahai Jing

Jiaquan Xie

Jingbi Yang

Provided is a hydraulic actuator shell and a preparation method. The hydraulic actuator shell comprises a foam metal sandwich composite pipe, a foam metal sandwich flange and a foam metal sandwich end cover; the foam metal sandwich composite pipe is connected with one end of the foam metal sandwich flange, and the foam metal sandwich end cover is connected with the other end of the foam metal sandwich flange; the foam metal sandwich composite pipe comprises a first metal pipe layer, a first foam metal layer and a second metal pipe layer sequentially arranged from inside to outside; and a first bonding interface among the first metal pipe layer, the first foam metal layer and the second metal pipe layer is a metallurgical bonding interface. The hydraulic actuator shell is used for improving compression resistance, corrosion resistance and vibration and noise reduction capabilities of the hydraulic actuator shell.

Hydraulic actuator shell and preparation method

Provided are a method and a device for predicting a roller gap in a non-steady-state process. The method includes: obtaining a plurality of first rolling parameters; dividing, based on the plurality of first rolling parameters, a rolling deformation zone into an inlet elastic compression zone, a plastic deformation zone, and an outlet elastic recovery zone; determining a rolling force of the inlet elastic compression zone and a rolling force of the outlet elastic recovery zone through function calculations using a predetermined elastic mechanics calculation model; determining a rolling force of the plastic deformation zone through function calculations using a predetermined energy technique; determining, based on a coupling relationship between the rolling forces and a roller flattening radius, a first total rolling force of the non-steady-state process deformation zone that satisfies a predetermined convergence condition; obtaining the roller gap through function calculations using a first predetermined function model.

Methods and devices for predicting roller gaps in non-steady-state processes

A pulse current processing apparatus includes a bidirectional tension and pulse current application apparatus, a real-time thin metal strip shape detection apparatus and a supporting base. In the apparatus, the tension is applied in the rolling direction and the transverse direction to effectively improve the strip shape flaws of the thin metal strip, and realize the rapid straightening of the thin metal strip; at the same time, the stress status of the thin metal strip is changed by applying the pulse current along the rolling direction or the transverse direction or applying different tensions in two directions; secondly, compared with the conventional heat-preservation heating and annealing apparatus, the pulse current can realize high-efficiency control of mechanical properties of the thin metal strip, and rapidly eliminate the internal stress; further, the strip shape is monitored by the laser ranging to ensure the strip shape consistency of the thin metal strip.

Pulse current processing apparatus and method for thin metal strip under bidirectional tension

A pulse current-assisted roll bonding method for a magnesium/titanium composite plate with a large thickness ratio is provided. The specific steps are as follows: 1, pre-treating a slab; 2, applying a pulse current; 3, rolling and bonding; and 4, post-treating the slab. The magnesium/titanium composite plate with the large thickness ratio is obtained.

Pulse current-assisted roll bonding method for magnesium/titanium composite plate with large thickness ratio

A subsurface defect detecting device for cylindrical components and method thereof are provided. The subsurface defect detecting device for cylindrical components includes: an electric rotating platform, a three-jaw chuck, a first linear supporting base, and a second linear supporting base. The three-jaw chuck is mounted on the electric rotating platform, and the three-jaw chuck is configured to fix a workpiece to be detected. The first linear supporting base and the second linear supporting base are arranged close to the electric rotating platform, and the first linear supporting base and the second linear supporting base are in contact with each other and are perpendicular to each other. The present disclosure achieves optimal laser ultrasound detection angles by incorporating a moving device, determining the appropriate laser ultrasound detection angle for cylindrical components with different curvature radii, thereby reducing the impact of uneven surfaces on the detection results.

Subsurface defect detecting device for cylindrical components and method thereof

A method for differential temperature rolling of composite strips based on actions of a friction roller includes steps of: S: preparing a metal strip to be bonded, and performing surface treatment on the metal strip to be bonded; S: frictionally heating the metal strip to be bonded by several sets of friction roller heating devices; measuring a surface temperature of the friction-heated metal strip to be bonded strip by a temperature detector; according to a measured temperature, adjusting a rotation speed of the friction roller in the friction roller heating devices; and S: transporting the heated metal strip to be bonded to a rolling mill for rolling to obtain a metal composite strip. The invention adopts the friction roller heating devices in rolling process of the metal strip to be bonded.

Method for differential temperature rolling of composite strips based on actions of friction roller and device thereof

Provided is an efficient preparation method of a bimetallic seamless composite pipe, and belongs to the technical field of steel pipe manufacture. The efficient preparation method of the bimetallic seamless composite pipe includes following steps: sheathing a base pipe blank on a cladding pipe blank to obtain a composite pipe blank, and carrying out a stress relief annealing treatment on the composite pipe blank, where the base pipe blank and the cladding pipe blank are made of different materials; heating the composite pipe blank after the stress relief annealing treatment to a hot working window temperature, and sheathing on a core rod of an extrusion cylinder after an insulation treatment, and then extruding along an axial direction of the extrusion cylinder to obtain a bimetallic seamless composite pipe.

Efficient preparation method of bimetallic seamless composite pipe

A device for continuously applying a transverse tension in an annealing process of an ultra-thin strip, including an unfolding and receiving mechanism for unwinding and winding the strip and an orthopedic mechanism for correcting the strip including an annealing furnace, and two orthopedic assemblies fixedly arranged inside the annealing furnace; the two orthopedic assemblies are symmetrically arranged on both sides of the strip, are parallel to an advancing direction of the strip and correspond to side edges of the strip, and include annular guide rails; each annular guide rail is fixedly connected with the annealing furnace and is slidably connected with an orthopedic part; the orthopedic part corresponds to each side edge of the strip, and each annular guide rail is internally provided with a driving part; the driving part is in transmission connection with the orthopedic part, and the orthopedic part is communicated with an air source part.

Device and method for continuously applying transverse tension in annealing process of ultra-thin strip

Embodiments of the present disclosure provides a method and device for constructing a multi-dimensional coupled vibration identification model for a roll system of a strip mill, the method comprising: performing preprocessing, signal decomposition, and reconstruction of the multi-dimensional data for the roll system of the strip mill monitored through technical monitoring by multiple sensors during a working process of the strip mill, and performing feature extraction of the reconstructed data using a wavelet packet energy approach; obtaining an initial multi-dimensional coupled vibration feature local identification model for the roll system of the strip mill based on Support Vector Machine (SVM) by using a Gaussian radial basis function as a kernel function of the SVM model; and training the initial multi-dimensional coupled vibration feature local identification model for the roll system of the strip mill using a multi-source heterogeneous information fusion approach based on the feature vector to obtain the multi-dimensional coupled feature identification model for the roll system of the strip mill.

Methods and devices for constucting multi-dimensional coupled vibration identification model for roll system of strip mill

A magnesium/titanium composite plate with large thickness ratios and a gradient heterothermal rolling bonding method are provided by the present disclosure, relating to the technical field of rolling bonding plates. The method includes following steps: assembling blanks according to a sequence of titanium strip, transition layer foil and magnesium alloy plate to obtain a composite blank; carrying out induction heating treatment on one side of the titanium strip of the composite blank, then rolling, and carrying out heat treatment on a composite plate blank after rolling to obtain the magnesium/titanium composite plate with large thickness ratios; and a thickness ratio of the magnesium alloy plate to the titanium strip is greater than or equal to 20:1.

Magnesium/titanium composite plate with large thickness ratios and gradient heterothermal rolling bonding method

The present invention belongs to the technical field of control for rolling mill vibration, and particularly relates to a control device, system and method for vertical-horizontal coupling vibration of a corrugated rolling mill. The control device includes a housing; a vibration-absorbing container is arranged in the housing; a steel ball particle group is placed in the vibration-absorbing container; a left side of the vibration-absorbing container is connected with one end of a return spring; the other end of the return spring is fixedly connected with a third base; the third base is fixedly mounted on a third sliding block; and the third sliding block is slidably arranged on a third linear guide rail.

Control device, system and method for vertical-horizontal coupling vibration of corrugated rolling mill

A vibration suppression method and system of a rolling mill roller assembly based on a vibration damping device are provided. The vibration suppression method includes: obtaining a first amplitude-frequency relationship during a vibration process of a rolling mill roller assembly vibration suppression system; based on the first amplitude-frequency relationship, determining two time domain relationships and two second amplitude-frequency relationships by a simulation analysis; based on the two time domain relationships and two second amplitude-frequency relationships, adjusting parameters of the vibration damping device until a vibration displacement of the rolling mill roller assembly vibration suppression system is less than or equal to a vibration displacement threshold. And provides a new solution for the stability control of the rolling mill, and ensures the reliability and stability of the vibration suppression of the rolling mill.

Vibration suppression method and system of a rolling mill roller assembly based on a vibration damping device

An anti-collision buffering device for high-speed train is provided. The anti-collision buffering device for high-speed train includes: an impacting and buffering body, which is hollow to form a buffering cavity filled with buffering medium; a contacting pad is arranged at a front end of the impacting and buffering body, contacting beams are arranged at a rear end of the impacting and buffering body, one or more impacting and buffering bodies are arranged between two adjacent carriages of the high speed train, the buffering cavity is divided into three sub-cavities by separating plates, an inner buffering cavity at a middle and two outer buffering cavities at sides, an protruding cavity is arranged on the inner buffering cavity. The anti-collision buffering device for high-speed train has simple structure, relatively low manufacturing cost, and is feasible for practical production, and with practical significance.

Anti-collision buffering device for high-speed train

Disclosed is a corrugated-flat rolling composite method for a steel/aluminum/aluminum alloy laminated composite plate. According to the method, a steel/aluminum laminated composite plate with a good plate shape and a firmly bonded interface is prepared, the corrugated cold rolling with a large thickness ratio is utilized to enhance the deformation of the interface to be bonded, and the deformation of constituent metals is coordinated to solve the problem that the steel-aluminum interface is not deformed. Then the deformation of constituents is coordinated by the interfacial corrugated-flat hot rolling to achieve the bonding of aluminum and aluminum alloy surfaces and prepare a high-performance steel/aluminum/aluminum alloy laminated composite plate. Taking the advantage that the interface oxidation has little effect on the bonding of aluminum and aluminum alloy, the problem of anti-oxidation in the composite process is eliminated, thereby the problem of low interfacial bonding strength is solved due to a fact that the interfacial shear becomes weak and the interfacial bonding mainly depends on the hot-press action when the steel and aluminum bonding surface approaches the neutral layer in the rolling process of a steel/aluminum/aluminum alloy laminated composite plate with a thickness more than 4 mm, and the problem of uncoordinated deformation is solved due to the large difference in the properties of steel, aluminum and aluminum alloy.

Corrugated-flat rolling composite method for steel/aluminum/aluminum alloy laminated composite plates

The invention relates to an emergency support robot for polar UAVs, belonging to the technical field of emergency support robots for polar UAVs. The technical problem to be solved is to improve the structure of the existing emergency support robots for polar UAVs. The technical scheme adopted is as follows: the robot is of a car body structure; a support table is arranged on the upper side of the chassis of the car body; a traveling mechanism is arranged on both sides of the chassis of the car body; the two sides of the support table are hinged with a pair of casings through hinged buckles and push rods; the casings are also provided with a wind power plant; the support table is provided with a launching guide rail.

Emergency support robot for polar UAVs

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Dalian, China

Tao Wang