Jiangsu University

Southeast University

Wenzhou University

Beijing Aeronautical Manufacturing Technology Research Institute

Fengze Dai

Yongkang Zhang

Jinzhong Lu

Shouqi Yuan

Xudong Ren

Tian Zhang

Naifei Ren

Cheng Wang

Yinghong Li

Liang Ruan

Yongzhuo Huangfu

Weifang He

Wei Xue

Pengfei Li

Shu Huang

Jianzhong Zhou

Kaiyu Luo

Xiankai Meng

Kun Huo

Mi Luo

Shuili Gong

Shikun Zou

An electromagnetic apparatus for active intervention to a shape of a molten pool is provided. In the present invention, a workpiece is placed on stepped surfaces of a test bench. Upon power on, a metal rod rotates to generate a toroidal magnetic field centered on the metal rod, and the toroidal magnetic field acts on the molten pool to generate an induced current. The induced current generates Lorentz force under the action of the magnetic field, which acts perpendicularly on an outer surface of the molten pool, thereby changing the height, depth and width of the molten pool, and finally realizing the active intervention to the molten pool shape.

Electromagnetic apparatus for active intervention to shape of molten pool

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.

Method and device for strengthening laser shock of hidden surface

A laser shock peening method and device for a bottom surface of a tenon groove of an aircraft blade. During the laser shock peening process, according to geometric characteristics of the bottom surface of a tenon groove, a circular facula of a laser beam is changed into a strip-shaped facula, at the same time as a flow-guiding injection device and a water pumping device are respectively arranged at two end surfaces of the bottom surface of the tenon groove to ensure the stability of a water confinement layer.

Laser shock peening method and device for bottom surface of tenon groove of aircraft blade

A method and apparatus are provided for springing a homogeneous water confinement layer on the surface of a work piece during a laser shock peening process. The method and apparatus are particularly for suitable for forming a homogeneous water layer on a low curvature surface such as found on turbine blades.

Method and apparatus for injecting water restraint layer of laser shock processing blade

A method and apparatus for nanocrystallizing a metal surface by laser-induced shock wave-accelerated nanoparticles. The apparatus comprises a control system, a light guiding system, a workbench control system and an auxiliary system, wherein the auxiliary system comprises an air compressor, a paint feeder device, a nanoparticle nozzle, a powder feeder device, an exhaust, a sealed working chamber and a metal nanoparticle recycler device. The method comprises the following steps: pre-processing and fixing a workpiece; activating the air compressor to feed a powder; controlling and adjusting the paint feeder device to eject a black paint; transmitting a high-power pulse laser beam; recycling excess metal nanoparticles; and rinsing non-vaporized/ionized black paint off a surface of the workpiece.

Method and apparatus for nanocrystallizing a metal surface by shock wave-accelerated nanoparticles

A method and apparatus for acquiring a nanostructured coating on a metal surface by using an intense shock wave generated by continuous explosion of a laser-induced plasma is provided. The method comprises: irradiating a laser beam on a black paint surface of an upper opening of a high pressure resistant glass pipe having a black paint strip arranged therein; the black paint absorbing the light energy and producing a plasma; generating an initial plasma explosion shock wave; transmitting the initial plasma explosion shock wave in the high pressure resistant glass pipe; generating a plasma cloud reaching a lower opening of a glass catheter; and, the shock wave pressure outputted embedding nanoparticles into a surface of a workpiece. The apparatus comprises the high pressure-resistant glass pipe with a zigzagging switchback shape or a spiral and inverted cone shape.

Method and apparatus for acquiring nanostructured coating by effect of laser-induced continuous explosion shock wave

Growing community of inventors

Jiangsu, China

Fengze Dai