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公开(公告)号:US20240401161A1
公开(公告)日:2024-12-05
申请号:US18670631
申请日:2024-05-21
Applicant: Xuanhua Iron and Steel Group Co., Ltd. , University of Science and Technology Beijing , HBZX HIGH TECH CO., LTD.
Inventor: Hongbin WANG , Guangsheng WEI , Rong ZHU , Minghai ZHANG , Jinlong WANG , Jianping JIA , Yongqiang YANG , Jianzhong WANG , Yunxiang ZHAO , Xin LI , Ceng LI , Huan CHANG
Abstract: The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.
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公开(公告)号:US12152212B2
公开(公告)日:2024-11-26
申请号:US17806914
申请日:2022-06-14
Applicant: University of Science and Technology Beijing
Inventor: Haibin Zuo , Yajie Wang
IPC: C10L5/48 , C04B33/04 , C04B33/135 , C04B33/32 , C04B35/626 , C10L5/08 , C10L5/36
Abstract: Disclosed is a method for recycling a coal liquefaction residue. The method includes S1, drying a coal liquefaction residue and pulverizing to obtain a pulverized coal liquefaction residue; S2, subjecting the pulverized coal liquefaction residue to a solvothermal extraction in an autoclave to obtain an extract liquid and a residue; S3, distilling the extract liquid and recovering an organic solvent to obtain a solid extract.
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公开(公告)号:US12147742B2
公开(公告)日:2024-11-19
申请号:US18373298
申请日:2023-09-27
Applicant: University of Science and Technology Beijing
Inventor: Ningning Liu , Linjing Huang , Ruifeng Dou , Mengqi Yu , Linxi Zhang , Zhi Wen , Xunliang Liu
IPC: G06F30/20 , G06F111/08 , G06F111/10
Abstract: A method for numerical reconstruction and heat transfer characteristics evaluation of a microstructure of thermal barrier coatings containing microcracks includes the following steps: determining a simulation area and size settings, generating random microcracks with different morphological characteristics and placing the microcracks in the simulation area, and determining whether a space occupied by the microcracks reaches a porosity ratio of the preset microcracks, building a general pore model of thermal barrier coatings (TBCs) based on the QSGS method, reconstructing true mesoscopic morphologies of the TBCs, determining whether the preset volume fraction has been reached, and building a heat transfer analysis model based on the thermal Lattice Boltzmann method to calculate heat insulation performance parameters such as temperature distribution, and thermal conductivity. Compared with the prior art, the heat transfer analysis model can restore a mesoscopic structure of the coating more truly and effectively.
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公开(公告)号:US20240367221A1
公开(公告)日:2024-11-07
申请号:US18556167
申请日:2022-07-21
Applicant: University of Science and Technology Beijing
Inventor: Cheng Zhou , Dongpo Xuan , You Zhou , Tianliang Jiang , Biji Zhu , Wenhao Fan , Zhihao Zhang , Jianxin Xie
IPC: B22D11/103 , B22D11/06
Abstract: A thin metal strip continuous casting method using momentum flow distribution, comprising the steps of: adjusting the position of a flow distribution device (2), and starting a double-roller thin strip continuous casting apparatus; molten metal (3) forming a uniform sheet-shaped molten metal flow (4) having an initial momentum after the molten metal (3) passes through the flow distribution device; the sheet-shaped molten metal flow entering a molten pool (5) at a superheat degree of 50-100° C. and an initial velocity of 0.5-2 m/s, wherein the flow distribution device is spaced apart from the molten pool; under the action of the initial velocity of the molten metal and in the molten pool, forming a whirlpool, which is adjacent to surfaces of two cooling rollers and has a momentum stirring action; and completing the solidification of the molten metal under the momentum stirring action of the whirlpool along with the rotation of the two cooling rollers. In the method, a whirlpool, which is adjacent to surfaces of cooling rollers and has a momentum stirring action, is formed in a molten pool by means of the kinetic energy of molten metal, such that equiaxed crystals can be prepared when a superheat degree is as high as 50-100° C., and the proportion of equiaxed crystals can be increased to 100%, thereby refining crystal grains and alleviating segregation.
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45.
公开(公告)号:US20240263815A1
公开(公告)日:2024-08-08
申请号:US18596754
申请日:2024-03-06
Applicant: University of Science and Technology Beijing
Inventor: Xiaoliang SHAO , Yemin LIU , Chengxu JIN , Yu LIU , Xueying WEN
IPC: F24F9/00 , F24F11/00 , F24F11/65 , F24F11/79 , F24F11/80 , F24F13/075 , F24F120/12
CPC classification number: F24F9/00 , F24F11/0001 , F24F11/65 , F24F11/79 , F24F11/80 , F24F13/075 , F24F2120/12 , F24F2221/38
Abstract: The present invention discloses a multi-mode air supply terminal and method for guaranteeing health and comfort of a person, and relates to the technical field of indoor ventilation. The multi-mode air supply terminal includes: a shell body (2) as well as a pore-plate air supply mechanism and an air-curtain air supply mechanism which are installed inside the shell body; the shell body is connected with one end of an air supply branch pipe), the air-curtain air supply mechanism is arranged around the pore-plate air supply mechanism, and an inner wall of the shell body (2) forms an empty cavity (6) with the pore-plate air supply mechanism and the air-curtain air supply mechanism; and the pore-plate air supply mechanism and the air-curtain air supply mechanism are respectively used for controlling opening/closing of a pore-plate air supply port and an air-curtain air supply port to form a plurality of air supply modes.
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46.
公开(公告)号:US20240256829A1
公开(公告)日:2024-08-01
申请号:US18243107
申请日:2023-09-07
Applicant: University of Science and Technology Beijing
Inventor: Tianyu HU , Huimin MA , Xiao ZHANG , Hao LIU , Kangsheng WANG
Abstract: A wind power generation quantile prediction method based on machine mental model and self-attention includes: using human cognitive decision-making mechanism for reference to construct the machine mental model as the basic framework of WQPMMSA, and then the seasonal power generation rules and intraday power generation trend are encoded into WQPMMSA as the input information of the prediction method, using the self-attention layer to replace the recurrent neural network in the original machine mental model, and establishing the statistical relationship between the seasonal power generation rules and the intraday power generation trend effectively, reducing the long-range forgetting of the original machine mental model-convert the continuous rank probability score in the integral form into a summation form, and using it as a loss function to train WQPMMSA, so that WQPMMSA approaches the optimal quantile prediction result with the highest efficiency. Therefore, accurate quantile prediction of wind power generation is realized.
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公开(公告)号:US20240251399A1
公开(公告)日:2024-07-25
申请号:US18395771
申请日:2023-12-26
Applicant: University of Science and Technology Beijing
Inventor: Lei SUN , Yuan ZHU , Jianquan WANG , Wei LI , Sha LI , Yang ZHANG
IPC: H04W72/1263 , H04W72/0446 , H04W72/542 , H04W72/543
CPC classification number: H04W72/1263 , H04W72/0446 , H04W72/542 , H04W72/543
Abstract: A 5G-TSN resource joint scheduling apparatus includes: a state information acquisition module, a scheduling decision making module, and a configuration module. The state information acquisition module is configured to acquire bottom-layer network information, and process the acquired bottom-layer network information to obtain state information, the bottom-layer network information includes channel information, gate control list information of a TSN domain, and queue information in a base station. The scheduling decision making module is configured to obtain a result of decision making based on the state information output by the state information acquisition module using a DDPG-based reinforcement learning model, the result of decision making includes whether to allocate resources for a current queue and a number of resources actually allocated to the current queue. The configuration module is configured to convert the result of decision making to one or more instructions understandable by the base station to configure the base station.
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48.
公开(公告)号:US20240175111A1
公开(公告)日:2024-05-30
申请号:US18179362
申请日:2023-03-07
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
Inventor: Chaofang DONG , Li WANG , Decheng KONG , Shiyuan ZHANG , Yucheng JI , Xiaogang LI
IPC: C22C33/02 , B22F10/28 , B22F10/64 , B33Y10/00 , B33Y40/20 , B33Y70/00 , B33Y80/00 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/48
CPC classification number: C22C33/0207 , B22F10/28 , B22F10/64 , B33Y10/00 , B33Y40/20 , B33Y70/00 , B33Y80/00 , C22C33/0285 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/48 , B22F2201/02 , B22F2301/35 , B22F2998/10 , B22F2999/00
Abstract: An additively manufactured high-strength and high-ductility stainless steel is characterized in that the composition, by weight percentage, C≤0.05 wt %, Si≤1 wt %, Mn≤1 wt %, Cr 14.5-15.5 wt %, Ni 5.0-5.5 wt %, Cu 4-4.5 wt %, Nb 0.35-0.45 wt %, and the balance of Fe and unavoidable impurities. And Cr equivalent of Creq=% Cr+% Mo+2.2% Ti+0.7% Nb+2.48% Al. Ni equivalent of Nieq=% Ni+35% C+20% N+0.25% Cu. The yield strength of the high-strength and high-ductility stainless steel ≥1270 MPa, the tensile strength ≥1380 MPa, and the elongation after fracture ≥15%.
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49.
公开(公告)号:US20240161478A1
公开(公告)日:2024-05-16
申请号:US18130200
申请日:2023-04-03
Applicant: University of Science and Technology Beijing
Inventor: Huimin MA , Haizhuang LIU , Yilin WANG , Rongquan WANG
CPC classification number: G06V10/803 , G06T5/002 , G06T7/73 , G06V10/7715 , G06V10/774 , G06V10/806 , G06V20/58 , G06V20/64 , G06T2207/10024 , G06T2207/10028 , G06T2207/20021 , G06T2207/20081 , G06T2207/30196 , G06T2207/30252
Abstract: Disclosed are a multimodal weakly-supervised three-dimensional (3D) object detection method and system, and a device. The method includes: shooting multiple two-dimensional (2D) red, green and blue (RGB) images with a camera, acquiring ground points by a vehicle LiDAR sensor and generating a 3D frustum based on 2D box labels on each of the 2D RGB images; filtering ground points in the 3D frustum and selecting a region with most 3D points; generating a 3D pseudo-labeling bounding box of an object according to the region with the most 3D points; training a multimodal superpixel dual-branch network with the 3D pseudo-labeling bounding boxes as labels and the 2D RGB image and the 3D point cloud as inputs; and inputting a 2D RGB image of a current frame and a 3D point cloud of a current scenario to a trained multimodal superpixel dual-branch network to generate an overall 3D point cloud.
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公开(公告)号:US11981979B2
公开(公告)日:2024-05-14
申请号:US18379213
申请日:2023-10-12
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
Inventor: Xinfang Zhang , Baoyu Zhang , Xiaoshan Huang , Mengcheng Zhou , Changhao Liu , Di Zhang , Longge Yan
Abstract: A device and method for preparing a low-impurity regenerated brass alloy through step-by-step insertion of an electrode are provided. The device includes a melt heating apparatus, an electrode displacement apparatus, and a pulse current generation apparatus. The automatic electrode lifting apparatus is controlled to adjust an insertion depth of the graphite electrode plate in the metal melt, and the pulse current generation apparatus is controlled to adjust the parameters of pulse current to achieve the impurity reduction on the metal melt. The preparation of a low-impurity regenerated brass alloy involves a short production process, simple operations, low energy consumption, and high impurity removal efficiency, and is suitable for regeneration and large-scale continuous production of non-ferrous metal alloys.
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