NOVEL ELECTROLYTE FOR ELECTROPOLISHING TITANIUM ALLOYS

    公开(公告)号:WO2021115698A1

    公开(公告)日:2021-06-17

    申请号:PCT/EP2020/081557

    申请日:2020-11-10

    申请人: BIOTRONIK AG

    发明人: LITSCHKO, Robert

    IPC分类号: C25F3/16 C25F3/26

    摘要: The present invention relates to an electrolyte for electropolishing metal surfaces, in particular workpieces, in particular made of titanium or titanium alloys such as nitinol. The present invention furthermore relates to a method for electropolishing, using the electrolyte.

    ELECTROLYTE SOLUTION AND METHOD OF REMOVING HYDROGEN FROM METALS
    4.
    发明申请
    ELECTROLYTE SOLUTION AND METHOD OF REMOVING HYDROGEN FROM METALS 审中-公开
    电解质溶液和从金属中去除氢的方法

    公开(公告)号:WO2012071345A2

    公开(公告)日:2012-05-31

    申请号:PCT/US2011/061707

    申请日:2011-11-21

    IPC分类号: C25F3/26

    CPC分类号: C25F3/16 C25F1/00 C25F3/00

    摘要: A method of removing hydrogen from the surface of a non-ferrous metal workpiece, including exposing the surface to a bath of an aqueous electrolyte solution including a concentration of citric acid from about 1.665 g/L to about 982 g/L and a concentration of ammonium bifluoride less than or equal to about 360 g/L, and being substantially free of a strong acid; controlling the temperature of the bath to be about -2 °C to about 90 °C; connecting the workpiece to the anode of a DC power supply and immersing a cathode of the DC power supply in the bath; and applying a current across the bath at a voltage and a current density measured as current per surface area of the workpiece.

    摘要翻译: 一种从有色金属工件的表面去除氢的方法,包括将所述表面暴露于含有浓度为约1.665g / L至约60mg / L的柠檬酸浓度的电解质水溶液浴 982g / L和浓度为小于或等于约360g / L的二氟化铵,并且基本上不含强酸; 控制浴的温度为约-2℃至约90℃; 将工件连接到DC电源的阳极并将DC电源的阴极浸入浴中; 并以电流和电流密度在电解槽中施加电流,该电压和电流密度是作为工件表面积的电流测量的

    METHOD OF MANUFACTURING AN ARTICLE
    5.
    发明申请
    METHOD OF MANUFACTURING AN ARTICLE 审中-公开
    制造方法

    公开(公告)号:WO2013167903A1

    公开(公告)日:2013-11-14

    申请号:PCT/GB2013/051208

    申请日:2013-05-10

    申请人: RENISHAW PLC

    摘要: A method of manufacturing an article, comprising taking an article formed in an initial state via an additive manufacturing process and performing a second manufacturing process to transform the article into a second state, which comprises mounting the article in a holding device, processing at least one first feature on the article, which comprises processing at least one set of mounting features on the article, re-mounting the article via the at least one set of mounting features, and then processing at least one second feature on the article.

    摘要翻译: 一种制造物品的方法,包括通过添加剂制造过程获取在初始状态下形成的物品,并执行第二制造过程以将物品转变成第二状态,其包括将物品安装在保持装置中,处理至少一个 所述文章的第一特征包括处理所述物品上的至少一组安装特征,经由所述至少一组安装特征重新安装所述物品,然后处理所述物品上的至少一个第二特征。

    BATH COMPOSITION FOR ELECTROPOLISHING OF TITANIUM AND METHOD FOR USING SAME
    7.
    发明申请
    BATH COMPOSITION FOR ELECTROPOLISHING OF TITANIUM AND METHOD FOR USING SAME 审中-公开
    用于电镀钛的浴组合物及其使用方法

    公开(公告)号:WO01000906A1

    公开(公告)日:2001-01-04

    申请号:PCT/FR2000/001694

    申请日:2000-06-20

    IPC分类号: C25F3/26

    CPC分类号: C25F3/26

    摘要: The invention concerns a bath composition for electropolishing of a non-alloyed titanium metal surface, characterised in that it comprises: sulphuric acid (95 to 98 % solution): 20 to 40 % in volume; hydrofluoric acid (40 to 48 % solution): 10 to 18 % in volume; acetic acid ( 90 to 100 % solution): 42 to 62 % in volume, capable of modifying the electrochemical balances at the solution-metal interface, the acetic acid enabling a better control of oxidation and dissolution of the titanium surface and to automatically limit the chemical dissolution of the metal surface.

    摘要翻译: 本发明涉及一种用于电解抛光非合金钛金属表面的浴组合物,其特征在于其包含:硫酸(95至98%溶液):体积为20至40%; 氢氟酸(40〜48%溶液):10〜18%体积; 乙酸(90至100%溶液):体积为42至62%,能够改变溶液 - 金属界面处的电化学余量,乙酸能够更好地控制钛表面的氧化和溶解,并自动限制 化学溶解金属表面。

    HYBRID ELECTROCHEMICAL AND ABRASIVE FLUID POLISHING

    公开(公告)号:WO2022253927A1

    公开(公告)日:2022-12-08

    申请号:PCT/EP2022/064975

    申请日:2022-06-01

    摘要: A method of performing hybrid electrochemical and abrasive fluid polishing is provided. The method comprised disposing (202) a workpiece to be polished and a cathode in a flow of polishing fluid, wherein the polishing fluid comprises at least one electrolyte and at least one abrasive medium. The method further comprises connecting (204) the workpiece and the cathode to an electrical power supply. An apparatus (100) is also provided for hybrid electrochemical and abrasive fluid polishing. The apparatus comprises a vessel (102) comprising an inlet (103a) and an outlet (103b) to allow a flow of fluid through the vessel. The apparatus further comprises one or more mounts (104) configured to hold a workpiece (108) to be polished in the vessel between the inlet and the outlet. The apparatus also comprises one or more connectors (106) configured to connect the workpiece and a cathode (110) to an electrical power supply.

    ELECTROLYTE SOLUTIONS FOR ELECTROPOLISHING OF NITINOL NEEDLES

    公开(公告)号:WO2021090088A1

    公开(公告)日:2021-05-14

    申请号:PCT/IB2020/059575

    申请日:2020-10-12

    申请人: ETHICON LLC

    发明人: OU, Duan Li

    IPC分类号: C25F3/26

    摘要: A low-hazardous electropolishing process has been developed to remove oxide layer(s) from the surface of nitinol needles. Low concentrations of citric acid and sulfamic acid are mixed with medium concentrations of sulfuric acid to use as an electrolyte solution. The process can be easily fitted into current suture needle manufacturing processes as well as into processes require electropolishing of nitinol-containing medical devices.