公开(公告)号：US11692236B2

公开(公告)日：2023-07-04

申请号：US17565421

申请日：2021-12-29

申请人： Jiangsu University

发明人： Xiankai Meng ,  Yaomin Zhao ,  Jinzhong Lu ,  Jianzhong Zhou ,  Yanhu Zhang ,  Shu Huang ,  Jie Cai ,  Pengfei Li

IPC分类号： C21D10/00 ,  F01D5/28

CPC分类号： C21D10/005 ,  F01D5/286 ,  G01N2291/0234

摘要： The present invention provides a device for peening by coupling a laser shock wave and an ultrasonic shock wave in real time. The device includes a synchronization device, a laser device, two ultrasonic shock devices, a working platform and a control system. An upper casing is supported above a base through second hydraulic cylinders. Two supporting beams are provided under the upper casing through the second hydraulic cylinders. Limiting slide rails are provided under the upper casing through first hydraulic cylinders. The two ultrasonic shock devices are connected through the synchronization device, which is configured to synchronize movement and rotation of the two ultrasonic shock devices. The laser device is configured to generate a laser beam to pass through the upper casing and irradiate a surface of a workpiece. The control system controls the laser device to lag behind the two ultrasonic shock devices to perform laser shock.

公开(公告)号：US10512987B2

公开(公告)日：2019-12-24

申请号：US15307891

申请日：2014-08-26

申请人： Jiangsu University

发明人： Jinzhong Lu ,  Jia Xing ,  Kaiyu Luo ,  Tong Lin

IPC分类号： B23K26/352 ,  C21D1/09 ,  B23K26/146 ,  B23K26/356 ,  B23K26/073 ,  B23K26/18 ,  C21D10/00

摘要： Provided is a laser shock peening method for obtaining a large-area uniform surface morphology. Using the relationship between the thickness of an absorption layer and a plastic deformation due to the laser shock peening and using a grid-shaped absorption layer (5) having a staggered distribution in thickness in cooperation with a two-layer interlaced laser shock processing method significantly reduce the height difference between micro-protrusions (10) and micro-pits (12) produced by an impact of a square light spot, and effectively reduce the roughness of the workpiece surface such that a large-area uniform surface morphology is formed on the workpiece surface.

公开(公告)号：US10391587B2

公开(公告)日：2019-08-27

申请号：US15307784

申请日：2014-12-17

申请人： JIANGSU UNIVERSITY

发明人： Kaiyu Luo ,  Xiang Jing ,  Jinzhong Lu ,  Bo Liu

IPC分类号： B23K26/342 ,  B23K26/356 ,  C21D10/00 ,  C23F17/00 ,  B23K26/0622 ,  B23K26/144 ,  B23K26/00 ,  B23K26/06 ,  B23K26/073 ,  C23C24/10 ,  B23K26/08 ,  B23K26/34 ,  B23K103/04

摘要： A remanufacturing method for a metal part having a damage. The damage groove is divided into a number of levels, and the groove bottom is treated by absorption layer-free laser shock peening to remove surface impurities and to refine surface-layer crystal grains. Then a cladding layer is formed by laser cladding. The process is repeated until the groove is completely filled by the cladding layer to higher than the surface of the metal part and the cladding layer higher than the surface is cut by a mechanical processing and polished, and the upper surface of the laser cladding layer is subjected to large-area overlapped laser shock peening.

公开(公告)号：US12097559B2

公开(公告)日：2024-09-24

申请号：US18273270

申请日：2022-02-25

申请人： Jiangsu University

发明人： Jinzhong Lu ,  Xiang Xu ,  Kaiyu Luo ,  Jialong Du ,  Xingyu Bu

IPC分类号： B22F10/38 ,  B22F7/06 ,  B22F10/25 ,  B22F10/31 ,  B22F10/366 ,  B22F10/85 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y50/02 ,  B33Y80/00

CPC分类号： B22F10/38 ,  B22F7/062 ,  B22F10/25 ,  B22F10/31 ,  B22F10/366 ,  B22F10/85 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y50/02 ,  B33Y80/00 ,  B22F2007/068 ,  B22F2998/10

摘要： The present disclosure relates to an eccentric extreme high-speed-rate laser hybrid manufacturing method for a rotary engineering component. By positioning an extreme high-speed-rate laser direct energy deposition machining head at a predetermined eccentric distance, the damage caused by reflected light to the machining head is effectively reduced, to prolong a service life of the machining head. Also a conventional form of a molten pool in extreme high-speed-rate laser direct energy deposition can be changed, namely from a “falling” form caused by a high-speed movement and a gravity to a “climbing” form. Thus, in extreme high-speed-rate laser direct energy deposition machining, the molten pool has a longer time to fully contact a surface of the rotary engineering component to form desirable bonding performance.

公开(公告)号：US11103956B2

公开(公告)日：2021-08-31

申请号：US16068092

申请日：2017-03-29

申请人： JIANGSU UNIVERSITY

发明人： Jinzhong Lu ,  Haifei Lu ,  Kaiyu Luo ,  Liujun Wu ,  Changyu Wang

IPC分类号： B23K26/356 ,  B23K26/06 ,  B23K26/0622 ,  B23K26/146 ,  B23K103/14 ,  B23K101/00 ,  B23K103/04 ,  B23K103/10

摘要： A double-side synchronous laser shock peening (LSP) method for leading edges of turbine blades employs two laser beams with the same diameter and different pulse energy to synchronously shock the front and back sides of each point within 8-10 mm range of the leading edge of the blade, wherein the laser pulse energy on the front side is greater than the laser pulse energy on the back side, and wherein, the laser power density on the front side is used to generate dynamic plastic deformation on the entire laser-shock spot area, while the laser power density on the back side is used to balance off excessive shock-wave pressure in the central area of laser-shock spot on the front side and avoid macroscopic deformation of the blade in the central area of laser-shock spot on the front side, and an optimal strengthening effect is achieved finally.

公开(公告)号：US20180258509A1

公开(公告)日：2018-09-13

申请号：US15308596

申请日：2015-09-09

申请人： JIANGSU UNIVERSITY

发明人： Jinzhong Lu ,  Yue Liu ,  Kaiyu Luo ,  Zhilong Wang

IPC分类号： C21D10/00 ,  C21D1/09

CPC分类号： C21D10/005 ,  C21D1/09 ,  C21D10/00 ,  C21D2221/00 ,  F01D5/286 ,  F05D2230/90 ,  F05D2300/516

摘要： A method for laser shock peening (LSP) to uniformly strengthen metallic components uses varied square-spot LSP with stagger multiple-layer. Each layer is subjected to square-spot LSP treatment, without overlapping. The length of square-spot in the first layer is larger than those in the second layer and third layers, and the length of square-spot in the second layer is equal to that in the third layer. The first layer treated by LSP is used to reduce deeper localized compressive residual stress, and the second and third layers imparted by square-spot LSP with staggered distance are used to eliminate of the boundary effect and decrease surface roughness.

公开(公告)号：US10792766B2

公开(公告)日：2020-10-06

申请号：US16068806

申请日：2017-06-08

申请人： JIANGSU UNIVERSITY

发明人： Jinzhong Lu ,  Haifei Lu ,  Jianhua Yao ,  Kaiyu Luo ,  Fangnian Lang ,  Liujun Wu ,  Yikai Shao

IPC分类号： B23K26/342 ,  B33Y10/00 ,  B33Y30/00 ,  B23K26/0622 ,  B23K26/146 ,  B23K26/356 ,  B33Y40/20 ,  B23K26/00 ,  B23K26/06 ,  B23K26/08 ,  B23K26/14 ,  C21D10/00

摘要： The invention relates to additive manufacturing field and laser shock peening (LSP) field, in particular to a combined apparatus for layer-by-layer interactive additive manufacturing with laser thermal/mechanical effects. In the apparatus, a LSP module and a SLM module operate in alternate so as to perform LSP for the formed part in the forming process of the formed part, and thereby a better strengthening effect of the formed part is achieved. The invention effectively overcomes the challenges of “shape control” against deformation and cracking of the formed parts incurred by internal stress and “property control” against poor fatigue property of the formed parts incurred by metallurgical defects during additive manufacturing, improves fatigue strength and mechanical properties of the faulted parts, and realizes high-efficiency and high-quality holistic processing of the formed parts.

公开(公告)号：US20170239751A1

公开(公告)日：2017-08-24

申请号：US15307784

申请日：2014-12-17

申请人： JIANGSU UNIVERSITY

发明人： Kaiyu Luo ,  Xiang Jing ,  Jinzhong Lu ,  Bo Liu

IPC分类号： B23K26/342 ,  C23C24/10 ,  C23F17/00 ,  B23K26/073 ,  B23K26/144 ,  B23K26/0622 ,  B23K26/06 ,  C21D10/00 ,  B23K26/00

CPC分类号： B23K26/342 ,  B23K26/0093 ,  B23K26/0622 ,  B23K26/0626 ,  B23K26/073 ,  B23K26/0869 ,  B23K26/144 ,  B23K26/34 ,  B23K26/356 ,  B23K2103/05 ,  C21D10/00 ,  C21D10/005 ,  C23C24/106 ,  C23F17/00

摘要： A remanufacturing method for a metal part having a damage. The damage groove is divided into a number of levels, and the groove bottom is treated by absorption layer-free laser shock peening to remove surface impurities and to refine surface-layer crystal grains. Then a cladding layer is formed by laser cladding. The process is repeated until the groove is completely filled by the cladding layer to higher than the surface of the metal part and the cladding layer higher than the surface is cut by a mechanical processing and polished, and the upper surface of the laser cladding layer is subjected to large-area overlapped laser shock peening.

公开(公告)号：US20160318123A1

公开(公告)日：2016-11-03

申请号：US14898952

申请日：2013-10-23

申请人： Wenzhou University ,  Southeast University ,  Jiangsu University

发明人： Wei Xue ,  Jinzhong Lu ,  Kaiyu Luo ,  Yongkang Zhang ,  Fengze Dai

IPC分类号： B23K26/082 ,  B23K26/356 ,  B23K26/00 ,  C21D10/00 ,  B23K26/03

CPC分类号： B23K26/082 ,  B23K26/03 ,  B23K26/0622 ,  B23K26/356 ,  C21D10/005

摘要： A method and device for strengthening the laser shock of a hidden surface includes establishing a continuous laser shock strengthening track and process after acquiring the information about the whole hidden surface. A control system adjusts the movement and rotation of a total reflection mirror which is arranged in a workpiece according to the signal from signal collecting cards for making a reflected laser beam act on a region to be machined of the hidden surface at an appropriate incidence angle. The method can realize the surface strengthening treatment of the hidden surface of the workpiece, significantly improve the mechanical performance of the workpiece and increase the fatigue life thereof, which is applicable to the surface strengthening of the workpiece with the hidden surface.

摘要翻译： 一种用于加强隐藏表面的激光冲击的方法和装置包括在获取关于整个隐藏表面的信息之后建立连续的激光冲击强化轨迹和过程。 控制系统根据来自信号收集卡的信号调整布置在工件中的全反射镜的运动和旋转，以使反射的激光束以适当的入射角作用在待加工的隐藏表面的区域上。 该方法可以实现工件隐藏表面的表面强化处理，显着提高工件的机械性能，增加其疲劳寿命，适用于具有隐藏表面的工件的表面强化。

公开(公告)号：US20150368744A1

公开(公告)日：2015-12-24

申请号：US14765538

申请日：2013-05-21

申请人： BEIJING AERONAUTICAL MANUFACTURING TECHNOLOGY RESEARCH INSTITUTE ,  SOUTHEAST UNIVERSITY ,  JIANGSU UNIVERSITY

发明人： Yongkang Zhang ,  Jinzhong Lu ,  Shuili Gong ,  Fengze Dai ,  Shikun Zou

IPC分类号： C21D10/00 ,  B23K26/146 ,  B23K26/14 ,  B05B12/12

CPC分类号： C21D10/005 ,  B05B12/122 ,  B23K26/146 ,  B23K26/1462 ,  B23K26/1464 ,  B23K26/356 ,  B23K2101/001 ,  C21D11/005

摘要： A method and an apparatus for injecting a water restraint layer of a laser shock processing blade, including a laser device distance measuring instrument platform bracket distance measuring instrument controller I, and water tap transition joint, signal wires, hose, and water tank. A standard curved section corresponding to two probe points I, and a point to be processed, on a vertical section along a laser beam direction on the blade is used for approximately replacing an actual curved section on the blade, so that a water flow flows into the blade from a middle point of the standard curved section approximately as a middle point of the actual curved section, and the long side of a flat nozzle is parallel to the tangent plane of the point to be processed of the blade through the controller according to feedback information of the distance measuring instrument.

摘要翻译： 一种用于注射激光冲击加工刀片的防水层的方法和装置，包括激光装置距离测量仪器平台支架距离测量仪器控制器I和水龙头过渡接头，信号线，软管和水箱。 使用对应于两个探针点I的标准弯曲部分和沿着刀片上的激光束方向的垂直部分上的要处理的点，用于大致更换刀片上的实际弯曲部分，使得水流流入 所述刀片从所述标准弯曲部分的中点大致为实际弯曲部分的中点，并且平坦喷嘴的长边平行于通过所述控制器的所述叶片的待处理点的切平面根据 测距仪的反馈信息。