公开(公告)号：US10968705B2

公开(公告)日：2021-04-06

申请号：US16266049

申请日：2019-02-02

申请人： SEED TECHNOLOGIES CORP., LTD.

发明人： Yuehua Xu ,  Bin Liu ,  Zhiming Tang

IPC分类号： E21B10/42

摘要： 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.

公开(公告)号：US10941619B2

公开(公告)日：2021-03-09

申请号：US15111851

申请日：2016-04-25

申请人： Seed Technologies Corp., Ltd.

发明人： Yuehua Xu ,  Yuan Yuan ,  Bin Liu

IPC分类号： E21B10/46 ,  C22C32/00 ,  F04D29/22 ,  B22F3/105 ,  C22C29/00 ,  B23K15/00 ,  B23K15/06 ,  B33Y10/00 ,  B33Y70/00 ,  B28B1/00 ,  C22C29/08 ,  B22F5/00 ,  B33Y80/00 ,  E21B10/54 ,  B23K15/02 ,  F04D29/02 ,  F16L9/14 ,  B23K101/20 ,  B23K101/00 ,  B23K103/00

摘要： 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.

公开(公告)号：US20210164295A1

公开(公告)日：2021-06-03

申请号：US17172989

申请日：2021-02-10

申请人： Seed Technologies Corp.,Ltd.

发明人： Yuehua Xu ,  Yuan Yuan ,  Bin Liu

IPC分类号： E21B10/46 ,  C22C32/00 ,  F04D29/22 ,  C22C29/00 ,  B23K15/00 ,  B23K15/02 ,  B23K15/06 ,  B22F10/20 ,  B33Y10/00 ,  B33Y70/00 ,  B28B1/00 ,  C22C29/08

摘要： 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.

公开(公告)号：US20180038167A1

公开(公告)日：2018-02-08

申请号：US15111851

申请日：2016-04-25

申请人： Seed Technologies Corp.,Ltd.

发明人： Yuehua Xu ,  Yuan Yuan ,  Bin Liu

IPC分类号： E21B10/46 ,  B23K15/00 ,  B28B1/00 ,  C22C29/08 ,  B33Y10/00 ,  B33Y70/00

CPC分类号： E21B10/46 ,  B22F3/1055 ,  B22F2005/001 ,  B23K15/0006 ,  B23K15/0086 ,  B23K15/0093 ,  B23K15/02 ,  B23K15/06 ,  B23K2101/001 ,  B23K2101/20 ,  B23K2103/52 ,  B28B1/001 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C22C29/005 ,  C22C29/08 ,  C22C32/0047 ,  E21B10/54 ,  F04D29/026 ,  F04D29/22 ,  F04D29/2227 ,  F05D2230/30 ,  F05D2300/177 ,  F05D2300/2263 ,  F16L9/14 ,  Y02P10/295

摘要： 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.

公开(公告)号：US10697048B2

公开(公告)日：2020-06-30

申请号：US15770751

申请日：2015-11-19

申请人： SEED TECHNOLOGIES CORP., LTD.

发明人： Bin Liu ,  Yuehua Xu ,  Ji Wu ,  Zhihua Cao

IPC分类号： C22C29/08 ,  B22F3/04 ,  C22C1/10 ,  E21B10/46 ,  C22C1/05 ,  C22C19/03 ,  C22C29/00 ,  E21B10/567 ,  B23B27/14 ,  B22F5/00

摘要： 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.