Patents by Inventor Yuehua Xu
Yuehua Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20210164295Abstract: A metal matrix composite composition includes tungsten carbide in an amount of 45 wt % to 72 wt % of the composition. In addition, the composition includes a binder in an amount of 28 wt % to 55 wt % of the composition. The binder includes nickel in an amount of at least 99 wt % of the binder.Type: ApplicationFiled: February 10, 2021Publication date: June 3, 2021Applicant: Seed Technologies Corp.,Ltd.Inventors: Yuehua Xu, Yuan Yuan, Bin Liu
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Patent number: 10975628Abstract: A drill bit nozzle includes a nozzle body, a channel in the nozzle body, and a nozzle outlet arranged at an end of the nozzle body and in communication with the channel. The nozzle outlet is a strip-shaped outlet configured to eject a sheet-like jet flow. Since the nozzle outlet of the drill bit nozzle is a strip-shaped outlet, the nozzle outlet is able to eject a sheet-like jet flow. When the drill bit nozzle is applied to a PDC drill bit, the drill bit nozzle can uniformly eject a drilling fluid onto each cutting tooth, which ensures that the cutting teeth in the drill bit may obtain good cooling and chip removal effects, while avoiding excessive concentration of the jet flow from the drill bit nozzle which may erode the cutting teeth, thereby prolonging the service life of the drill bit.Type: GrantFiled: October 10, 2018Date of Patent: April 13, 2021Assignee: SEED TECHNOLOGIES CORP., LTD.Inventors: Yuehua Xu, Jiaqing Yu, Weixiong Wang, Jianghe Luo, Runan Zhang
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Patent number: 10968705Abstract: A matrix body PDC drill bit includes a drill crown and a bit body, and further includes a combined limiting sleeve. A connecting block and a connecting sleeve are provided at a junction of the drill crown and the bit body; multiple engaging teeth and engaging grooves for defining circumferential rotation and mutual engagement are provided between the connecting sleeve and the connecting block; the combined limiting sleeve includes several sub-limiting sleeves which are combined and spliced along an outer peripheral surface of the connecting sleeve and are configured to fixedly connected into a whole; an inner side of each sub-limiting sleeve is provided with upper limiting bumps and lower limiting bumps; the connecting block is inserted into the connecting sleeve to allow the upper limiting bumps and the lower limiting bumps to abut against fixed end surfaces of the connecting block and the connecting sleeve, respectively.Type: GrantFiled: February 2, 2019Date of Patent: April 6, 2021Assignee: SEED TECHNOLOGIES CORP., LTD.Inventors: Yuehua Xu, Bin Liu, Zhiming Tang
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Patent number: 10941619Abstract: An additive manufacturing method for making a metal matrix composite component includes melting a powdered mixture with an electron beam. The powdered mixture comprises powdered tungsten carbide in an amount of 45 wt % to 72 wt % of the powdered mixture and a powdered binder in an amount of 28 wt % to 55 wt % of the powdered mixture. The powdered binder comprises boron, silicon, and nickel.Type: GrantFiled: April 25, 2016Date of Patent: March 9, 2021Assignee: SEED TECHNOLOGIES CORP., LTD.Inventors: Yuehua Xu, Yuan Yuan, Bin Liu
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Patent number: 10697048Abstract: Disclosed is an alloy drill. Components of the alloy drill are: 14-30 wt % of a binder phase being one or more of Co, Ni, Fe, and Cu; 0.32-9.7 wt % of an additive being one or more of TaC, MoC, Cr3C2, and MnC; and the remainder as a hard phase being WC. In the alloy drill, WC is used as the hard phase to improve its hardness and wear resistance, Cu, Ni, Fe, or Co as the binder phase can improve its anti-corrosion performance and anti-fatigue performance, and TaC, MoC, Cr3C2, or MnC as the additive can further improve its thermal stability and wear resistance. Thus, the alloy drill has superior wear resistance and impact toughness, and also possesses excellent anti-corrosion performance and anti-fatigue performance.Type: GrantFiled: November 19, 2015Date of Patent: June 30, 2020Assignee: SEED TECHNOLOGIES CORP., LTD.Inventors: Bin Liu, Yuehua Xu, Ji Wu, Zhihua Cao
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Publication number: 20200024903Abstract: A matrix body PDC drill bit includes a drill crown and a bit body, and further includes a combined limiting sleeve. A connecting block and a connecting sleeve are provided at a junction of the drill crown and the bit body; multiple engaging teeth and engaging grooves for defining circumferential rotation and mutual engagement are provided between the connecting sleeve and the connecting block; the combined limiting sleeve includes several sub-limiting sleeves which are combined and spliced along an outer peripheral surface of the connecting sleeve and are configured to fixedly connected into a whole; an inner side of each sub-limiting sleeve is provided with upper limiting bumps and lower limiting bumps; the connecting block is inserted into the connecting sleeve to allow the upper limiting bumps and the lower limiting bumps to abut against fixed end surfaces of the connecting block and the connecting sleeve, respectively.Type: ApplicationFiled: February 2, 2019Publication date: January 23, 2020Applicant: SEED TECHNOLOGIES CORP., LTD.Inventors: Yuehua XU, Bin LIU, Zhiming TANG
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Publication number: 20190345775Abstract: The present application discloses a drill bit nozzle, which includes a nozzle body, a channel in the nozzle body, and a nozzle outlet arranged at an end of the nozzle body and in communication with the channel. The nozzle outlet is a strip-shaped outlet configured to eject a sheet-like jet flow. Since the nozzle outlet of the drill bit nozzle is a strip-shaped outlet, the nozzle outlet is able to eject a sheet-like jet flow. When the drill bit nozzle is applied to a PDC drill bit, the drill bit nozzle can uniformly eject a drilling fluid onto each cutting tooth, which ensures that the cutting teeth in the drill bit may obtain good cooling and chip removal effects, while avoiding excessive concentration of the jet flow from the drill bit nozzle which may erode the cutting teeth, thereby prolonging the service life of the drill bit.Type: ApplicationFiled: October 10, 2018Publication date: November 14, 2019Applicant: SEED TECHNOLOGIES CORP., LTD.Inventors: Yuehua XU, Jiaqing YU, Weixiong WANG, Jianghe LUO, Runan ZHANG
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Patent number: 10166636Abstract: A composite hard-surface material preparation method and a composite hard-surface material prepared thereby, the preparation method comprising: dispersedly fixing a plurality of cemented carbide sheets (2) to a surface of a metal substrate (1); and surfacing the cemented carbide sheets (2) and the metal substrate (1) with a solder (3) to obtain a composite hard-surface material, the solder (3) comprising nickel-based alloy powder, tungsten carbide particles and boron nitride powder. The solder (3) used in the preparation of the composite hard-surface material comprises nickel-based alloy powder, tungsten carbide particles and boron nitride powder, wherein the nickel-based alloy powder can increase fluidity and corrosion resistance, the tungsten carbide particle can improve hardness, and the boron nitride powder can effectively reduce friction coefficient.Type: GrantFiled: December 11, 2015Date of Patent: January 1, 2019Assignee: SEED TECHNOLOGIES CORP., LTD.Inventors: Cankun Chen, Yuehua Xu, Zhihua Cao
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Publication number: 20180305790Abstract: Disclosed is an alloy drill. Components of the alloy drill are: 14-30 wt % of a binder phase being one or more of Co, Ni, Fe, and Cu; 0.32-9.7 wt % of an additive being one or more of TaC, MoC, Cr3C2, and MnC; and the remainder as a hard phase being WC. In the alloy drill, WC is used as the hard phase to improve its hardness and wear resistance, Cu, Ni, Fe, or Co as the binder phase can improve its anti-corrosion performance and anti-fatigue performance, and TaC, MoC, Cr3C2, or MnC as the additive can further improve its thermal stability and wear resistance. Thus, the alloy drill has superior wear resistance and impact toughness, and also possesses excellent anti-corrosion performance and anti-fatigue performance.Type: ApplicationFiled: November 19, 2015Publication date: October 25, 2018Applicant: SEED TECHNOLOGIES CORP., LTD.Inventors: Bin LIU, Yuehua XU, Ji WU, Zhihua CAO
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Patent number: 10107300Abstract: A wear resistant material is manufactured from a Ni-based alloy powder and an additive. The Ni-based alloy powder includes the following components in mass fraction: C: 0.1˜1.1%, Si: 0.5˜6.0%, Fe: 2.5˜15.0%, B: 0.2˜5.0%, CrB2: 6.0˜26.0%, and the balance of Ni. The Ni-based alloy powder is employed as the main component and CrB2 and WC are added, thus improving the wear resistance of the wear resistant material. Experimental data show that, the wear resistant material provided in the present disclosure has the hardness up to 70˜80 HRC and excellent wear resistance. A wear resistant impeller can be manufactured from the wear resistant material.Type: GrantFiled: November 20, 2014Date of Patent: October 23, 2018Assignee: Zhu Zhou Seed Cemented Carbide Technology Co., Ltd.Inventors: Yuehua Xu, Yupeng Wang, Cheng Luo
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Publication number: 20180161879Abstract: A hard alloy functionally graded material molding method, comprising: firstly, mixing an additive with an alloy raw material to obtain a mixture; then placing the mixture obtained from the above step into a composite die set for composite pressure molding, so as to obtain a blank; the composite die set comprise outer layer high-expansion coefficient dies, an intermediate transition layer die set, and inner layer low-expansion coefficient dies; and finally, sintering the above blank to obtain the hard alloy functionally graded composite material. The multi-component hard alloy functionally graded composite material which is large in size, has a complex outline structure and is free from obvious interfaces is prepared. In a thickness direction, the sintering molded functionally graded material attains gradient grain structures that have different components and different grain sizes and are free from obvious interfaces.Type: ApplicationFiled: July 15, 2015Publication date: June 14, 2018Applicant: SEED TECHNOLOGIES CORP., LTD.Inventor: Yuehua XU
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Publication number: 20180038167Abstract: An additive manufacturing method for making a metal matrix composite component includes melting a powdered mixture with an electron beam. The powdered mixture comprises powdered tungsten carbide in an amount of 45 wt % to 72 wt % of the powdered mixture and a powdered binder in an amount of 28 wt % to 55 wt % of the powdered mixture. The powdered binder comprises boron, silicon, and nickel.Type: ApplicationFiled: April 25, 2016Publication date: February 8, 2018Applicant: Seed Technologies Corp.,Ltd.Inventors: Yuehua Xu, Yuan Yuan, Bin Liu
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Publication number: 20170368645Abstract: A composite hard-surface material preparation method and a composite hard-surface material prepared thereby, the preparation method comprising: dispersedly fixing a plurality of cemented carbide sheets (2) to a surface of a metal substrate (1); and surfacing the cemented carbide sheets (2) and the metal substrate (1) with a solder (3) to obtain a composite hard-surface material, the solder (3) comprising nickel-based alloy powder, tungsten carbide particles and boron nitride powder. The solder (3) used in the preparation of the composite hard-surface material comprises nickel-based alloy powder, tungsten carbide particles and boron nitride powder, wherein the nickel-based alloy powder can increase fluidity and corrosion resistance, the tungsten carbide particle can improve hardness, and the boron nitride powder can effectively reduce friction coefficient.Type: ApplicationFiled: December 11, 2015Publication date: December 28, 2017Inventors: Cankun CHEN, Yuehua XU, Zhihua CAO
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Publication number: 20160245295Abstract: A wear resistant material is manufactured from a Ni-based alloy powder and an additive. The Ni-based alloy powder includes the following components in mass fraction: C: 0.1˜1.1%, Si: 0.5˜6.0%, Fe: 2.5˜15.0%, B: 0.2˜5.0%, CrB2: 6.0˜26.0%, and the balance of Ni. The Ni-based alloy powder is employed as the main component and CrB2 and WC are added, thus improving the wear resistance of the wear resistant material. Experimental data show that, the wear resistant material provided in the present disclosure has the hardness up to 70˜80 HRC and excellent wear resistance. A wear resistant impeller can be manufactured from the wear resistant material.Type: ApplicationFiled: November 20, 2014Publication date: August 25, 2016Inventors: Yuehua Xu, Yupeng Wang, Cheng Luo
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Patent number: D855241Type: GrantFiled: June 30, 2017Date of Patent: July 30, 2019Assignee: SEED TECHNOLOGIES CORP., LTD.Inventors: Yuehua Xu, Hua Yu
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Patent number: D875147Type: GrantFiled: August 25, 2018Date of Patent: February 11, 2020Assignee: SEED TECHNOLOGIES CORP., LTD.Inventors: Yuehua Xu, Jiaqing Yu, Weixiong Wang, Jianghe Luo