公开(公告)号：US12128501B2

公开(公告)日：2024-10-29

申请号：US18286758

申请日：2022-07-08

Applicant: Jiangsu University

Inventor： Jianzhong Zhou ,  Lei Huang ,  Yanqiang Gou ,  Xiankai Meng ,  Shu Huang ,  Pengfei Li ,  Li Li ,  Gaoqiang Jiang ,  Xu Feng

IPC: B23K26/356 ,  C21D10/00 ,  C22C21/00 ,  C23C22/02 ,  C23C22/05 ,  B23K101/34 ,  B23K103/10

CPC classification number: B23K26/356 ,  C21D10/005 ,  C22C21/00 ,  C23C22/02 ,  C23C22/05 ,  B23K2101/35 ,  B23K2103/10 ,  C23C2222/20

Abstract: The present disclosure provides a method for preparing a superhydrophobic surface of an aluminum alloy through laser peening, including the following steps: coating a surface of the aluminum alloy as an absorption layer with an organic component-containing confinement layer to obtain a coated aluminum alloy, where the organic component-containing confinement layer is a mixed organic solution including 5 mL to 10 mL of perfluorooctyltriethoxysilane (FOTS), 100 mL to 200 mL of absolute ethanol, and 30 mL to 50 mL of distilled water; and subjecting a surface of the coated aluminum alloy to the laser peening to form the superhydrophobic surface.

公开(公告)号：US12005522B2

公开(公告)日：2024-06-11

申请号：US16810084

申请日：2020-03-05

Applicant: Purdue Research Foundation

Inventor： Ramses Valentin Martinez ,  Debkalpa Goswami

IPC: B23K26/356 ,  B23K26/08 ,  B23K103/00 ,  B23K103/14 ,  C21D10/00

CPC classification number: B23K26/356 ,  B23K26/08 ,  C21D10/005 ,  B23K2103/14 ,  B23K2103/42 ,  B23K2103/52 ,  B23K2103/54

Abstract: The present disclosure relates to a novel continuous laser nanoforming device, and the methods to make and use the continuous laser nanoforming device.

公开(公告)号：US11913086B2

公开(公告)日：2024-02-27

申请号：US17639766

申请日：2020-09-02

Applicant: SAFRAN AIRCRAFT ENGINES

Inventor： Elliott Archibald Breittmayer ,  David Gardy ,  Jocelyn Bastide

IPC: C21D10/00 ,  G01B7/12 ,  G01B11/10 ,  B23P25/00 ,  B04B5/00

CPC classification number: C21D10/00 ,  B04B5/00 ,  B23P25/00 ,  G01B7/125 ,  G01B11/105

Abstract: A method for relieving residual stresses in a part includes increasing the rotation speed, which includes measuring, at a first given instant, values representative of the rotation speed and the radial enlargement; measuring, at a second given instant after the first instant, values representative of the rotation speed and the radial enlargement; determining a leading coefficient of a first affine function from the preceding values; determining a target radial enlargement value as a function of a value representative of the rotation speed, in the form of a second affine function, the origin of which is the value of a desired final residual enlargement and the leading coefficient of which is the leading coefficient of the first affine function; stopping the increase in rotation speed of the part from the moment that the actual enlargement of the rotating part corresponds to the target relative radial enlargement value that has been determined.

公开(公告)号：US11911849B2

公开(公告)日：2024-02-27

申请号：US16513467

申请日：2019-07-16

Applicant: SUBARU CORPORATION

Inventor： Mayu Nakano

IPC: B23K26/356 ,  B23K26/146 ,  B23K26/14 ,  C21D10/00 ,  B23K26/00

CPC classification number: B23K26/356 ,  B23K26/146 ,  B23K26/1476 ,  C21D10/005 ,  B23K26/0006

Abstract: According to one implementation, a laser peening processing apparatus includes: a laser oscillator; and a nozzle. The laser oscillator oscillates a laser light. The nozzle focuses the laser light and irradiates a surface to be processed of a workpiece with the focused laser light while flowing a liquid toward the surface to be processed. A straightening part that straightens a flow of the liquid is disposed on the nozzle. Furthermore, according to one implementation, a laser peening processing method includes: oscillating a laser light; manufacturing a product or a semi-product by focusing the laser light and irradiating a surface to be processed of a workpiece with the focused laser light toward while flowing a liquid on the surface; and straightening the liquid using a straightening structure.

公开(公告)号：US11814714B2

公开(公告)日：2023-11-14

申请号：US17380090

申请日：2021-07-20

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Wenyuan Song ,  Peilu Li ,  Peng Yin ,  Yuren Lu ,  Shuangyi Li

IPC: C22F3/00 ,  B06B3/00 ,  C21D10/00

CPC classification number: C22F3/00 ,  B06B3/00 ,  C21D10/00

Abstract: A device for reducing and homogenizing residual stress of a metal frame including a substrate, a frame fixing device and ultrasonic vibrators. A groove with an upward opening is provided in the middle of the substrate, and a shape enclosed by vertical side walls of the groove matches a shape of an outer frame of a metal frame to be processed. A plurality of through holes that are horizontally diverged are arranged around the side walls of the groove, and the through holes are vertically intersected with the groove. The ultrasonic vibrators are provided on the substrate and front ends of the ultrasonic vibrators extend into respective through holes to abut against the metal frame in the groove. The frame fixing device is also arranged in the groove where the metal frame is located, after the metal frame to be processed is placed in the groove.

公开(公告)号：US20230340634A1

公开(公告)日：2023-10-26

申请号：US18247822

申请日：2021-10-08

Applicant: OUTOKUMPU OYJ

Inventor： Jan Y. JONSSON ,  James OLIVER ,  Nataliya LIMBACH-MALYAR ,  Peter HEDSTRÖM

IPC: C21D10/00 ,  C21D6/00

CPC classification number: C21D10/00 ,  C21D6/00 ,  C21D2211/005 ,  C21D2211/008

Abstract: A method of suppressing embrittlement of stainless steel in a stainless steel production process comprising the steps of ⋅manufacturing stainless steel in a conventional stainless steel manufacturing process ⋅annealing the stainless steel in an annealing step ⋅cooling the steel in a cooling step or quenching the steel in a quenching step and ⋅applying a magnetic field to the stainless steel during the cooling or quenching step

公开(公告)号：US11680304B2

公开(公告)日：2023-06-20

申请号：US17337756

申请日：2021-06-03

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Wenyuan Song ,  Peilu Li ,  Yuren Lu ,  Peng Yin ,  Shuangyi Li

IPC: C21D10/00

CPC classification number: C21D10/00

Abstract: A method for reducing and homogenizing residual stress of a metal frame based on elastic acoustic waves that includes determining an injection scheme of elastic acoustic waves based on residual stress distribution and material characteristics of a metal frame, where the injection scheme comprises at least one of the number of injection directions and corresponding injection direction(s), an excitation scheme and working parameters of the elastic acoustic waves; placing the metal frame in a substrate and fixing the inner and outer frames of the metal frame; assembling an excitation device for the elastic acoustic waves based on the determined excitation scheme of the elastic acoustic waves; injecting the acoustic waves into the metal frame from at least one direction; and performing the reduction and homogenization for multiple rounds if the reduction and homogenization of the residual stress of the metal frame in a single round does not meet the requirement.

公开(公告)号：US11542572B2

公开(公告)日：2023-01-03

申请号：US16332754

申请日：2016-09-21

Applicant: JIANGSU UNIVERSITY

Inventor： Xiankai Meng ,  Jianzhong Zhou ,  Chun Su ,  Jie Sheng ,  Jiale Xu ,  Jing Li ,  Shu Huang

IPC: C21D10/00 ,  B23K26/356 ,  B23K26/70 ,  C21D6/04 ,  C21D11/00 ,  F25D3/10 ,  F25D29/00 ,  C22F1/18

Abstract: In a cryogenic workbench, a cryogenic laser peening system and a control method, a tapered surface gap d is adjusted, based on the electromagnetic principle, to control the gasification volume of liquid nitrogen, then the temperatures of the copious cooling workbench and the surface of a sample are precisely controlled by means of the adjustment of the heat absorption amount of liquid nitrogen gasification, the temperature adjustment range and the temperature rising/lowering rate of the cryogenic laser peening system are effectively extended, and the precision of the control of the surface temperature of the sample is increased in combination with a closed-loop control. Additionally, an intelligent control of a cryogenic laser peening process is realized by means of a computer and a PLC control unit, whereby the usage amount of liquid nitrogen in the experiment process is reduced and the processing efficiency is improved.

公开(公告)号：US11447837B2

公开(公告)日：2022-09-20

申请号：US16069336

申请日：2017-06-08

Applicant: JIANGSU UNIVERSITY

Inventor： Jinzhong Lu ,  Liujun Wu ,  Kaiyu Luo ,  Shijie Ji

IPC: C21D1/09 ,  B24C1/10 ,  C21D7/06 ,  C21D10/00 ,  B23K26/0622 ,  B23K26/06 ,  B23K26/073 ,  B82Y30/00

Abstract: Provided is a combined fabricating method for gradient nanostructure in the surface layer of a metal workpiece. A plastic deformation layer in great depth is induced by laser shock peening, then the surface of the metal workpiece is nanocrystallized by surface mechanical attrition treatment, and finally a gradient nanostructure is obtained in the surface layer of the metal workpiece with desirable layer thickness and optimized micro-structure distribution.

公开(公告)号：US11311909B2

公开(公告)日：2022-04-26

申请号：US16991372

申请日：2020-08-12

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang Xu ,  Shuangyi Li ,  Yuren Lu ,  Peng Yin ,  Dezhi Li ,  Ruili Jia ,  Wenyuan Song

IPC: B06B1/20 ,  B23K31/00 ,  C22F3/00 ,  B06B1/02 ,  C21D10/00

Abstract: A device and method for reducing and homogenizing residual stress of a component by an array of high-energy elastic waves. The device includes a tubular body consisting of at least two elements, multiple first through holes and a clamping device provided on an outer side of the tubular body. Exciters are connected with exciting wedges so that an end face of each of the exciting wedges is closely coupled to a surface of the component. A connection portion is coupled to an emitting end of each of the exciters, where the axis of the emitting end coincides with a normal line at a pressed surface of the component A multi-channel signal amplifier is electrically connected to each of the exciters and a multi-channel excitation control module is electrically connected to the multi-channel signal amplifier.