公开(公告)号：US20230304361A1

公开(公告)日：2023-09-28

申请号：US17700555

申请日：2022-03-22

Applicant: University of Science and Technology Beijing ,  Shunde Graduate School, University of Science and Technology Beijing

Inventor： Haiping LIU ,  Qi LV ,  Dashan SHEN ,  Donghang HAN ,  Dongmei ZHU

IPC: E21B17/07

CPC classification number: E21B17/076

Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.

公开(公告)号：US12139974B2

公开(公告)日：2024-11-12

申请号：US17700555

申请日：2022-03-22

Applicant: University of Science and Technology Beijing ,  Shunde Graduate School, University of Science and Technology Beijing

Inventor： Haiping Liu ,  Qi Lv ,  Dashan Shen ,  Donghang Han ,  Dongmei Zhu

IPC: E21B17/07

Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.

公开(公告)号：WO2019057057A1

公开(公告)日：2019-03-28

申请号：PCT/CN2018/106424

申请日：2018-09-19

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING ,  BOEING (CHINA) CO., LTD.

Inventor： ZHANG, Shengen ,  LIU, Bo ,  LIN, Rui

IPC: C22B7/00

Abstract: The techniques for producing 2024 and 7075 aluminum alloys by recycling waste aircraft aluminum alloys, which belong to technical fields for circular economy. The present invention develops techniques for obtaining the 2024 and 7075 aluminum alloys by subjecting waste aircraft aluminum alloys as raw materials to pretreatment, smelting, impurity removal, melt ingredient assay, ingredient adjustment, refining, and casting. Through utilizing the waste package aluminum alloys and the waste aluminum pop-top cans to adjust the ingredients, the waste aircraft aluminum alloys would be recycled at a lower cost without downgrading. The techniques has some advantages, such as low cost, and applicability for industrial production, as well as prominent economic benefit.

公开(公告)号：WO2023283865A1

公开(公告)日：2023-01-19

申请号：PCT/CN2021/106414

申请日：2021-07-15

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： PANG, Xiaolu ,  GUO, Tao ,  GAO, Kewei

IPC: C23C14/35

Abstract: In a general aspect, a ceramic thin film with nanotwinned regions at a tunable volume fraction is manufactured. In some aspects, a method for manufacturing a ceramic thin film on a surface of a substrate in an evacuated chamber is disclosed. The ceramic thin film includes crystalline grains; and each of the crystalline grains includes one or more nanotwinned regions. The one or more nanotwinned regions have a volume fraction in a range of 30-80%of the ceramic thin film. A plurality of targets including a plurality of sputtering materials is prepared. A gas atmosphere in the evacuated chamber is formed. Electric power is supplied to the plurality of targets to cause co-sputtering of the plurality of sputtering materials to form the ceramic thin film with the one or more nanotwinned regions.

公开(公告)号：WO2018132134A1

公开(公告)日：2018-07-19

申请号：PCT/US2017/050913

申请日：2017-09-11

Applicant: THE BOEING COMPANY ,  UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： KANG, Qiang ,  ZHANG, Yun ,  LIU, Peng ,  DONG, Peng ,  XU, Zhe ,  LIU, Chaomin ,  JIANG, Haitao

IPC: B21J1/02 ,  C22F3/00 ,  C22C23/02

Abstract: A calcium-bearing magnesium and rare earth element alloy consists essentially of, in mass percent, zinc (Zn): 1 - 3%; aluminum (Al): 1 - 3%; calcium (Ca): 0.1 - 0.4%; gadolinium (Gd): 0.1 - 0.4%; yttrium (Y): 0 - 0.4%; manganese (Mn): 0 - 0.2%; and balance magnesium (Mg).

公开(公告)号：US12283058B1

公开(公告)日：2025-04-22

申请号：US18785108

申请日：2024-07-26

Applicant: North China University of Technology ,  University of Science and Technology Beijing

Inventor： Lifeng Zhang ,  Haojian Duan ,  Dinghan Li ,  Yuexin Zhang ,  Wei Chen ,  Ying Ren

IPC: G06T7/246 ,  G01N11/02 ,  G06T7/62 ,  G06T7/64 ,  G06T7/90

Abstract: A method analyzes global average grayscale change of tundish ink tracing experiment. The method includes the following steps: building a water model based on a prototype size and production parameters of a tundish; carrying out experiments by using the water model to obtain a video file of the ink tracing; processing the video file and extracting a characteristic curve of a global average grayscale changing with the time; analyzing the characteristic curve, and extracting a global peak grayscale time, a global tracer residual volume and a global emptying time as indicators for evaluating a tundish structure and flow characteristics of the tundish structure.

公开(公告)号：US20240401237A1

公开(公告)日：2024-12-05

申请号：US18609883

申请日：2024-03-19

Applicant: University of Science and Technology Beijing

Inventor： Yongfeng Liang ,  Fuqiang Zhang ,  Junpin Lin ,  Leming Xu ,  Gang Yang ,  Xianfei Ding

IPC: C30B29/52 ,  C30B15/10 ,  C30B15/14 ,  C30B15/20 ,  C30B29/66

Abstract: Disclosed is a method for preparing a directionally solidified TiAl alloy, including: (1) melting and casting a master alloy to obtain a TiAl alloy ingot; (2) processing the TiAl alloy ingot into a sample rod, and placing the sample rod into a refractory metal crucible and then assembling the refractory metal crucible to a directional solidification furnace; (3) vacuumizing the directional solidification furnace, and heating the directional solidification furnace to gradually raise a temperature to exceed a melting point of the sample rod, and conducting heat preservation to melt the sample rod uniformly to obtain a molten TiAl alloy; and (4) directionally pulling the molten TiAl alloy after the heat preservation to allow directional growth to a growth length, stopping the directionally pulling, and taking out an obtained sample to obtain a test rod of the directionally solidified TiAl.

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

IPC: C21C7/072 ,  C21C5/52 ,  C21C7/00 ,  C21C7/06 ,  C21C7/064 ,  C21C7/10

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.

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.

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.