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公开(公告)号：US11904400B2
公开(公告)日：2024-02-20
申请号：US17733109
申请日：2022-04-29
Inventor： Cong Mao , Weidong Tang , Yuanqiang Luo , Yinghui Ren , Wei Li , Mingjun Zhang , Kun Tang , Gang Wu , Yongle Hu , Feng Shi , Ziyang Chen , Zhuo Wen
CPC classification number: B23H9/02 , B23H3/02 , B23H3/08 , B23H5/04 , B23H2300/10
Abstract: This paper describes an invention involving an electrochemical discharge-enabled micro-grinding process for micro-components of silicon-based materials. The specific machining method is described below. A micro-grinding tool and an auxiliary electrode are respectively connected to the negative and positive electrodes of a pulsed DC power supply. When the current flows through the loop, an electrochemical hydrogen evolution reaction (HER) occurs at the micro-grinding tool in the grinding fluid, which generate multiple hydrogen bubbles. The bubbles coalesce into an insulating gas film and separate the micro-grinding tool from the grinding fluid; when the critical voltage is reached, the gas film is broken down and an electrochemical discharge occurs accompanied by discharge spark; under the action of the discharge spark, the surface material of the workpiece in the discharge-affected region is directly ablated to generate a heat-affected layer (HAL), namely, physical modification.
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公开(公告)号：US10994249B1
公开(公告)日：2021-05-04
申请号：US17088058
申请日：2020-11-03
Inventor： Cong Mao , Zhikang Zhang , Yongle Hu , Jian Zhang , Mingjun Zhang , Kun Tang , Weidong Tang , Linfeng Xiao
Abstract: An anti-agglomeration device for a nanofluid includes a support module, a motion module, a photoacoustic conversion module and a control module. The support module includes a frame and screws and is configured to support the photoacoustic conversion module and the motion module. The photoacoustic conversion module includes a nanosecond laser, a first clamp, a lens, a silica optical fiber, a second clamp, gold nanoparticles and a container and is configured to realize photoacoustic conversion to generate ultrasonic waves. The motion module includes a servo motor, a dovetailed rail, a guide screw, a fixed plate, a slider and a deep groove ball bearing. The motion module is configured to support the photoacoustic conversion module and realize the combined motions of the photoacoustic conversion module. The control module includes a support plate and a CCD camera and is configured to control the motion module in real time.
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公开(公告)号：US11992890B2
公开(公告)日：2024-05-28
申请号：US17733117
申请日：2022-04-29
Inventor： Cong Mao , Ziyang Chen , Yinghui Ren , Wei Li , Yuanqiang Luo , Gang Wu , Mingjun Zhang , Kun Tang , Yongle Hu , Feng Shi , Weidong Tang , Ci Song
Abstract: The invention provides an electrochemical discharge-assisted micro-grinding device for micro-components of brittle and hard materials. The device includes a micro-grinding tool, grinding fluid, a workpiece, an auxiliary electrode, a processing groove, and a pulsed DC power supply; the processing groove is filled with grinding fluid; the micro-grinding tool, the workpiece, and the auxiliary electrode are immersed in the grinding fluid; the micro-grinding tool is composed of a conductive grinding tool base, an electroplating layer, and insulated superabrasives. The micro-grinding tool is connected to the negative electrode of the pulsed DC power supply; the grinding fluid is composed of H2O2, Na2CO3, EDTA-Fe-Na, and deionized water; the workpiece material is brittle and hard; a large number of micro structures need to be produced on the surface of the workpiece.
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公开(公告)号：US20210129092A1
公开(公告)日：2021-05-06
申请号：US17088058
申请日：2020-11-03
Inventor： Cong Mao , Zhikang Zhang , Yongle Hu , Jian Zhang , Mingjun Zhang , Kun Tang , Weidong Tang , Linfeng Xiao
Abstract: An anti-agglomeration device for a nanofluid includes a support module, a motion module, a photoacoustic conversion module and a control module. The support module includes a frame and screws and is configured to support the photoacoustic conversion module and the motion module. The photoacoustic conversion module includes a nanosecond laser, a first clamp, a lens, a silica optical fiber, a second clamp, gold nanoparticles and a container and is configured to realize photoacoustic conversion to generate ultrasonic waves. The motion module includes a servo motor, a dovetailed rail, a guide screw, a fixed plate, a slider and a deep groove ball bearing. The motion module is configured to support the photoacoustic conversion module and realize the combined motions of the photoacoustic conversion module. The control module includes a support plate and a CCD camera and is configured to control the motion module in real time.
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