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26 条记录 (耗时 0.016 秒)

    METHOD FOR CONTROLLING DEFORMATION OF A LARGE-SCALE CRANKSHAFT
    3.
    发明申请
    METHOD FOR CONTROLLING DEFORMATION OF A LARGE-SCALE CRANKSHAFT 有权

    公开(公告)号：US20220081736A1

    公开(公告)日：2022-03-17

    申请号：US17363579

    申请日：2021-06-30

    申请人： BEIJING INSTITUTE OF TECHNOLOGY

    发明人： Chunguang Xu ,  Yuren Lu ,  Peng Yin ,  Peilu Li ,  Dezhi Li ,  Shuangyi Li ,  Wenyuan Song ,  Zhaowei Miao

    IPC分类号： C21D11/00 ,  C21D9/30 ,  C21D10/00

    摘要： A method for controlling deformation of a large-scale crankshaft comprising detecting and recording stress value(s) of part(s) to be regulated by the crankshaft; fixing the crankshaft on a tool to couple transmitting ends of high-energy acoustic beam transducers with the part(s) to be regulated; turning on the high-energy acoustic beam transducers to emit high-energy acoustic beams into the crankshaft, controlling working frequencies of the high-energy acoustic beam transducers within a range of 10-30 kHz, and setting a predicted regulation and control time according to the stress value(s) of the part(s) to be regulated; and closing the high-energy acoustic beam transducers when the predicted regulation and control time is reached, and taking the crankshaft out of the tool.

    DEVICE AND METHOD FOR REDUCING AND HOMOGENIZING RESIDUAL STRESS OF A COMPONENT BY ARRAY OF HIGH-ENERGY ELASTIC WAVES
    4.
    发明申请
    DEVICE AND METHOD FOR REDUCING AND HOMOGENIZING RESIDUAL STRESS OF A COMPONENT BY ARRAY OF HIGH-ENERGY ELASTIC WAVES 有权

    公开(公告)号：US20210086309A1

    公开(公告)日：2021-03-25

    申请号：US16991372

    申请日：2020-08-12

    申请人： BEIJING INSTITUTE OF TECHNOLOGY

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

    IPC分类号： B23K31/00 ,  C22F3/00

    摘要： 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.

    Control device and control method for reducing and homogenizing welding residual stress by acoustic wave
    5.
    发明授权
    Control device and control method for reducing and homogenizing welding residual stress by acoustic wave 有权

    公开(公告)号：US11919040B2

    公开(公告)日：2024-03-05

    申请号：US17364071

    申请日：2021-06-30

    申请人： BEIJING INSTITUTE OF TECHNOLOGY

    发明人： Chunguang Xu ,  Peng Yin ,  Yuren Lu ,  Shuangyi Li ,  Wenyuan Song

    IPC分类号： B06B1/06 ,  B06B3/00 ,  B23K20/10

    CPC分类号： B06B1/0622 ,  B06B3/00 ,  B23K20/10 ,  B06B2201/72

    摘要： A control device for reducing and homogenizing welding residual stress by acoustic waves, comprising: a fixing tool having two rows of through holes; a plurality of ultrasonic transducers each having a body and a conical horn transmitting portion at a lower end of the body, wherein lower ends of the horn transmitting portions are fixedly connected with flanges, the horn transmitting portions of the ultrasonic transducers extend into respective through holes of the fixing tool to be in contact with welded parts below the fixing tool, the flanges are fixed to the fixing tool by bolts, and the two rows of through holes are arranged both sides of a welding seam of the welded parts; and a driving device for driving the ultrasonic transducers to operate. A corresponding control method is also provided. The control device can be used to control residual stress at the welding seam of steels.

    DEVICE AND METHOD FOR ULTRASONIC DETECTING OF MECHANICAL MEMBER BASED ON MAGNETIC FLUID COUPLING
    7.
    发明申请
    DEVICE AND METHOD FOR ULTRASONIC DETECTING OF MECHANICAL MEMBER BASED ON MAGNETIC FLUID COUPLING 有权

    公开(公告)号：US20220026292A1

    公开(公告)日：2022-01-27

    申请号：US17377162

    申请日：2021-07-15

    申请人： BEIJING INSTITUTE OF TECHNOLOGY

    发明人： Chunguang Xu ,  Shuangyi Li ,  Yuren Lu ,  Peng Yin ,  Dezhi Li ,  Wenyuan Song

    IPC分类号： G01L1/25 ,  G01N29/07 ,  G01N29/24 ,  G01L1/26

    摘要： A device and a method for ultrasonic detecting a mechanical member based on magnetic fluid coupling. The device comprises a magnetic field generating apparatus, magnetic fluid and an ultrasonic probe. The magnetic field generating apparatus has a cylindrical structure, into which the magnetic fluid is injected, where an upper portion of the apparatus is provided with the ultrasonic probe a front end that vertically extends into a liquid level of the magnetic fluid, and a bottom portion of the apparatus covers a detected position of a member under detection. The magnetic fluid at least contains magnetic suspension particles and oil-based or water-based liquid. With the device and the method, the ultrasonic probe is coupled with the member under detection to realize ultrasonic detecting of the service stress of the member under detection.

    METHOD FOR REDUCING AND HOMOGENIZING RESIDUAL STRESS OF A METAL FRAME BASED ON ELASTIC ACOUSTIC WAVES
    8.
    发明申请
    METHOD FOR REDUCING AND HOMOGENIZING RESIDUAL STRESS OF A METAL FRAME BASED ON ELASTIC ACOUSTIC WAVES 有权

    公开(公告)号：US20220025481A1

    公开(公告)日：2022-01-27

    申请号：US17337756

    申请日：2021-06-03

    申请人： BEIJING INSTITUTE OF TECHNOLOGY

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

    IPC分类号： C21D10/00

    摘要： 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.

    Non-destructive detecting device for component residual stress gradient
    9.
    发明授权
    Non-destructive detecting device for component residual stress gradient 有权

    公开(公告)号：US11226246B2

    公开(公告)日：2022-01-18

    申请号：US16897414

    申请日：2020-06-10

    申请人： BEIJING INSTITUTE OF TECHNOLOGY

    发明人： Chunguang Xu ,  Peng Yin ,  Zhixiang Li ,  Yuren Lu ,  Jianfeng Song ,  Wenyuan Song ,  Ruili Jia ,  Shuangyi Li

    IPC分类号： G01L1/25 ,  B81B3/00

    摘要： The present disclosure relates to the technical field of non-destructive detecting of residual stress, and in particular to a non-destructive detecting device for component residual stress gradient. the non-destructive detecting device comprises: groups of transmitting transducers and receiving transducers arranged symmetrically to each other, the transmitting transducers closer to the symmetry axis have greater excitation frequencies; an acoustic wedge coupled to the groups of transmitting transducers and receiving transducers, wherein groups of cylindrical transmitting tunnels and receiving tunnels are provided obliquely within the transmitting connection area and the receiving connection area through their top surfaces and toward their bottom surfaces, the transmitting transducers are coupled to the transmitting tunnels in a one-to-one correspondence, the receiving transducers are coupled to the receiving tunnels in a one-to-one correspondence, and the bottom surfaces of the transmitting connection area and the receiving connection area are pressed against the surface of the detected component; and a calculation processing module electrically connected to the transmitting transducers and the receiving transducers. The non-destructive detecting device solves the problem that the residual stress values of components at different penetration depths cannot be detected at the same time.

    ULTRASONIC TEST DEVICE AND TEST METHOD FOR SERVICE STRESS OF A MOVING MECHANICAL COMPONENT
    10.
    发明申请
    ULTRASONIC TEST DEVICE AND TEST METHOD FOR SERVICE STRESS OF A MOVING MECHANICAL COMPONENT 有权

    公开(公告)号：US20210389195A1

    公开(公告)日：2021-12-16

    申请号：US17331045

    申请日：2021-05-26

    申请人： BEIJING INSTITUTE OF TECHNOLOGY

    发明人： Chunguang Xu ,  Shuangyi Li ,  Yuren Lu ,  Peng Yin ,  Dezhi Li ,  Wenyuan Song

    IPC分类号： G01L1/25 ,  G01L5/00

    摘要： An ultrasonic test device and test method for service stress of a moving mechanical component, where the device comprises an ultrasonic probe, a coupling fluid, a pressure-maintaining cover and universal wheels. The cover is vertically arranged above an inspected position of an inspected component, an interior of the pressure-maintaining cover is filled with coupling fluid, a bottom of the cover is provided with a structure permeable to the coupling fluid to form a coupling fluid film between the inspected position and the bottom of the cover, and a top of the cover is equipped with the ultrasonic probe. A detection part at a lower part of the ultrasonic probe extends into the coupling fluid of the cover and is vertical to the bottom of the cover without contact. The distance between the ultrasonic probe and the inspected component is kept unchanged through the universal wheels.