Patents by Inventor Xiaoyan Zeng
Xiaoyan Zeng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220203450Abstract: A laser powder bed fusion forming device for a large-size ring/frame-shaped metal piece. Said device includes a forming cylinder, a substrate, a galvanometer array and a dust removal module. The forming cylinder is ring/frame-shaped and is adapted to the inner and outer contours of the ring/frame-shaped metal piece to be formed. The substrate is also ring/frame-shaped and is arranged inside the forming cylinder. The galvanometer array is located above the forming cylinder, includes a plurality of galvanometer systems, and the corresponding scanning areas thereof cover the upper surface of the forming cylinder. The dust removal module is located between the forming cylinder and the galvanometer array, and is used for forming a circulating air flow field which is distributed along the radial direction of the ring-shaped metal piece or along the circumscribed circle of the horizontal cross-section of the frame-shaped metal piece or along some other specific directions.Type: ApplicationFiled: February 25, 2022Publication date: June 30, 2022Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Xiaoyan ZENG, Kaiwen WEI, Youguang FAN, Mengna LIU
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Patent number: 10808364Abstract: An onsite steel rail laser processing engineering vehicle, including a laser processing power engineering vehicle and a laser processing cart, the laser processing power engineering vehicle is connected to the laser processing cart; the onsite steel rail laser processing engineering vehicle further comprises a transport mechanism disposed on the laser processing power engineering vehicle; through movement and rotation, the transport mechanism transports the laser processing cart into the laser processing power engineering vehicle or transports the laser processing cart out from the laser processing power engineering vehicle and places it on rails.Type: GrantFiled: January 24, 2018Date of Patent: October 20, 2020Assignees: WUHAN NRD LASER ENGINEERING CO., LTD., HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Xiaoyan Zeng, Qianwu Hu, Pinghua Guo, Xiaoming Xu, Ming Jiang, Dengzhi Wang, Chongyang Li, Li Meng
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Publication number: 20200199698Abstract: The disclosure discloses a method for reinforcing a rail by laser and auxiliary heat source efficient hybrid cladding. The laser and the auxiliary heat source simultaneously apply on a region to be cladded of a rail surface. The laser serves as a main heat source to enable simultaneous and rapid fusion of an added metal powder and partial substrate material in the rail surface to form a molten pool. The auxiliary heat source moves with the laser heat source in the same direction at the same speed, and performs synchronous preheating and/or post-heating on the laser molten pool, the heat-affected zone and the surface layer of the rail substrate to reduce the temperature gradient, thereby reducing the cooling rate, and avoiding martensite transformation and cracking in the heat-affected zone.Type: ApplicationFiled: January 18, 2019Publication date: June 25, 2020Applicants: Wuhan Hivalue Intelaser Ltd., Huazhong University of Science and Technology, WUHAN NRD LASER ENGINEERING CO.,LTDInventors: Xiaoyan ZENG, Li MENG, Dengzhi WANG, Qianwu HU, Pinghua Guo, Xiaohua XU, Li NIU
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Patent number: 10309831Abstract: The present invention belongs to the technical field of elemental analysis, and more particularly, relates to a dynamic calibration method for echelle spectrometer in laser-induced breakdown spectroscopy, comprising: S1: collecting a standard light source by using an echelle spectrometer; S2: in combination with a calibration function, calculating a pixel position coordinate ({circumflex over (x)},?) corresponding to a spectral wavelength ?; S3: performing dynamic searching and filtering near the pixel position coordinate ({circumflex over (x)},?) to obtain a set D of all pixel position coordinates, and adjusting all original intensity values in the set D to obtain intensity values F(Ix,y), and S4: calculating a spectral line intensity value after dynamic calibration by summing the adjusted intensity values F(Ix,y), thereby completing dynamic calibration of the result of the echelle spectrometer. The method in the present invention can overcome the shortcoming, i.e.Type: GrantFiled: April 24, 2017Date of Patent: June 4, 2019Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Xiangyou Li, Meng Shen, Zhongqi Hao, Xinyan Yang, Jiaming Li, Xiaoyan Zeng, Yongfeng Lu
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Publication number: 20190161918Abstract: An onsite steel rail laser processing engineering vehicle, including a laser processing power engineering vehicle and a laser processing cart, the laser processing power engineering vehicle is connected to the laser processing cart; the onsite steel rail laser processing engineering vehicle further comprises a transport mechanism disposed on the laser processing power engineering vehicle; through movement and rotation, the transport mechanism transports the laser processing cart into the laser processing power engineering vehicle or transports the laser processing cart out from the laser processing power engineering vehicle and places it on rails.Type: ApplicationFiled: January 24, 2018Publication date: May 30, 2019Inventors: Xiaoyan ZENG, Qianwu HU, Pinghua GUO, Xiaoming XU, Ming JIANG, Dengzhi WANG, Chongyang LI, Li MENG
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Method for improving detective sensitivity on carbon element in laser-induced breakdown spectroscopy
Patent number: 10267741Abstract: The present invention belongs to the field of laser plasma emission spectrometry, and in particular relates to a method for improving the detection sensitivity on a carbon element in laser-induced breakdown spectroscopy.Type: GrantFiled: July 13, 2018Date of Patent: April 23, 2019Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Xiangyou Li, Jiaming Li, Lianbo Guo, Xiaoyan Zeng, Yongfeng Lu, Zhongqi Hao, Ran Zhou, Yun Tang, Ping Yang -
Publication number: 20190003887Abstract: The present invention belongs to the technical field of elemental analysis, and more particularly, relates to a dynamic calibration method for echelle spectrometer in laser-induced breakdown spectroscopy, comprising: S1: collecting a standard light source by using an echelle spectrometer; S2: in combination with a calibration function, calculating a pixel position coordinate ({circumflex over (x)}, ?) corresponding to a spectral wavelength ?; S3: performing dynamic searching and filtering near the pixel position coordinate ({circumflex over (x)}, ?) to obtain a set D of all pixel position coordinates, and adjusting all original intensity values in the set D to obtain intensity values F(Ix,y), and S4: calculating a spectral line intensity value after dynamic calibration by summing the adjusted intensity values F(Ix,y), thereby completing dynamic calibration of the result of the echelle spectrometer. The method in the present invention can overcome the shortcoming, i.e.Type: ApplicationFiled: April 24, 2017Publication date: January 3, 2019Inventors: Xiangyou LI, Meng SHEN, Zhongqi HAO, Xinyan YANG, Jiaming LI, Xiaoyan ZENG, Yongfeng LU
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METHOD FOR IMPROVING DETECTIVE SENSITIVITY ON CARBON ELEMENT IN LASER-INDUCED BREAKDOWN SPECTROSCOPY
Publication number: 20180335388Abstract: The present invention belongs to the field of laser plasma emission spectrometry, and in particular relates to a method for improving the detection sensitivity on a carbon element in laser-induced breakdown spectroscopy.Type: ApplicationFiled: July 13, 2018Publication date: November 22, 2018Inventors: Xiangyou LI, Jiaming LI, Lianbo GUO, Xiaoyan ZENG, Yongfeng LU, Zhongqi HAO, Ran ZHOU, Yun TANG, Ping YANG -
Patent number: 10106864Abstract: Provided are a method and an apparatus for laser quenching. The method utilizes a scanning galvanometer, and involves laser quenching via irradiation with intermittent, repeated scans, rather than a single scan as in the prior art. The method results in increased laser energy absorbed by the metal base and improved depth of thermal conduction, while avoiding melting at the metal surface, thus providing a significantly improved laser quenching process. The apparatus can include a laser, a control system, a light guiding system, a mechanical motion device and a galvanometer.Type: GrantFiled: November 7, 2013Date of Patent: October 23, 2018Assignee: WUHAN HIVALUE INTELASER LTD.Inventors: Xiaoyan Zeng, Qianwu Hu, Yinlan Zheng, Ming Jiang, Chongyang Li, Zhao Ren, Kun Li
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Patent number: 9810634Abstract: Provided is a method for inhibiting self-absorption effect of a LIBS, comprising ablating a to-be-measured sample via a pulse laser thereby generating plasma, and selectively stimulating the plasma using a wavelength-tunable laser beam enabling transition of particles in a ground-state in the plasma to high energy state as stimulated absorption, thereby improving a stimulated absorption transition efficiency of the particles in a ground-state, and preventing plasma spectrum from being influenced by self-absorption effect. The invention is capable of eliminating the self-absorption effect without introducing external interference, obtaining original characteristics of emission spectrum from the center of the plasma, and essentially inhibiting and finally eliminating the self-absorption effect of laser plasma by making use of intrinsic physical property of plasma.Type: GrantFiled: June 14, 2016Date of Patent: November 7, 2017Assignee: Huazhong University of Science and TechnologyInventors: Lianbo Guo, Jiaming Li, Xiangyou Li, Xiaoyan Zeng, Yongfeng Lu, Rongxing Yi, Xinyan Yang, Zhongqi Hao
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Publication number: 20170010215Abstract: Provided is a method for inhibiting self-absorption effect of a LIBS, comprising ablating a to-be-measured sample via a pulse laser thereby generating plasma, and selectively stimulating the plasma using a wavelength-tunable laser beam enabling transition of particles in a ground-state in the plasma to high energy state as stimulated absorption, thereby improving a stimulated absorption transition efficiency of the particles in a ground-state, and preventing plasma spectrum from being influenced by self-absorption effect. The invention is capable of eliminating the self-absorption effect without introducing external interference, obtaining original characteristics of emission spectrum from the center of the plasma, and essentially inhibiting and finally eliminating the self-absorption effect of laser plasma by making use of intrinsic physical property of plasma.Type: ApplicationFiled: June 14, 2016Publication date: January 12, 2017Inventors: Lianbo GUO, Jiaming LI, Xiangyou LI, Xiaoyan ZENG, Yongfeng LU, Rongxing YI, Xinyan YANG, Zhongqi HAO
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Patent number: 9365983Abstract: The invention discloses an on-line laser processing vehicle for a rail, including a chassis, a vehicle body, a steer-control chamber and a container; the steer-control chamber includes a console, a CCD monitoring system and a drive-switching operating system; a dual driving system and switching mechanism, which with a process-operation driving system, a conventional operation driving system and a switching mechanism, is disposed in the container; the process-operation driving system operates to provide driving power for the laser processing vehicle during laser processing, and precisely controls moving speed and distance of the laser processing vehicle; the switching mechanism operates to implement switching between the conventional operation driving system and the process-operation driving system.Type: GrantFiled: June 13, 2013Date of Patent: June 14, 2016Assignees: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, WUHAN NRD LASER ENGINEERING CO., LTDInventors: Xiaoyan Zeng, Qianwu Hu, Chongyang Li, Yinlan Zheng, Min Du
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Publication number: 20160076115Abstract: Provided are a method and an apparatus for laser quenching. The method takes the advantage of a high jumping speed of a scanning galvanometer, and adopts the method of heating on multiple or even high frequency repeated scans instead of on a single scan in prior art for laser quenching, wherein the laser energy is fed into the surface of a workpiece by way of short time and multiple superimposed heating, cumulatively, the laser energy absorbed by the metal base is increased and the depth of thermal conduction is improved also. The apparatus includes a laser, a control system, a light guiding system, a mechanical motion device and a scanning galvanometer.Type: ApplicationFiled: November 7, 2013Publication date: March 17, 2016Inventors: Xiaoyan ZENG, Qianwu HU, Yinlan ZHENG, Ming JIANG, Chongyang LI, Zhao REN, Kun LI
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Publication number: 20150020707Abstract: The invention discloses an on-line laser processing vehicle for a rail, including a chassis, a vehicle body, a steer-control chamber and a container; the steer-control chamber includes a console, a CCD monitoring system and a drive-switching operating system; a dual driving system and switching mechanism, which with a process-operation driving system, a conventional operation driving system and a switching mechanism, is disposed in the container; the process-operation driving system operates to provide driving power for the laser processing vehicle during laser processing, and precisely controls moving speed and distance of the laser processing vehicle; the switching mechanism operates to implement switching between the conventional operation driving system and the process-operation driving system.Type: ApplicationFiled: June 13, 2013Publication date: January 22, 2015Inventors: Xiaoyan Zeng, Qianwu Hu, Chongyang Li, Yinlan Zheng, Min Du