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1.发明公开公开(公告)号：US20230321740A1
公开(公告)日：2023-10-12
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：US20230204481A1
公开(公告)日：2023-06-29
申请号：US18172181
申请日：2023-02-21
Inventor： Wei LI , Zhuoyin PENG , Lei LI , Cong LI , Jian CHEN , Fei CHEN , Yong YAN , Dapeng JIANG , Guowei BAI , Yaopeng CHANG , Huang HUANG , Weiying HUANG , Libo ZHOU , Jianlin CHEN , Yanjie REN , Jianjun HE
CPC classification number: G01N3/08 , G01N3/06 , G01N1/44 , G01N2203/0017 , G01N2203/04
Abstract: Disclosed is a device for testing corrosion fatigue resistance on the basis of acoustic emission. The device includes: a main machine including a supporting frame and a tensile mechanism arranged on the supporting frame; a clamping mechanism including a first clamp and a second clamp that is arranged opposite the first clamp, where the first clamp and the second clamp are both connected to the tensile mechanism, the tensile mechanism is used for driving the first clamp and the second clamp to move close to or away from each other, the first clamp is provided with an accommodation cavity for accommodating a corrosive substance, the accommodation cavity is provided with an opening that is provided on the first clamp and close to one end of the second clamp, and the first clamp can place a test specimen in the accommodation cavity when fixing the test specimen.
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3.发明公开公开(公告)号：US20230294189A1
公开(公告)日：2023-09-21
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 , 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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