Process for preparing barium titanate single crystals
    1.
    发明授权
    Process for preparing barium titanate single crystals 失效
    制备钛酸钡单晶的方法

    公开(公告)号:US5366583A

    公开(公告)日:1994-11-22

    申请号:US957902

    申请日:1992-10-08

    IPC分类号: C30B15/00 C30B29/32

    CPC分类号: C30B15/00 C30B29/32

    摘要: A mixture of titanium dioxide and an oxide or carbonate of barium includes one or more transition metal elements selected from the group of V, Cr, Mn, Fe, Co, Ni and Cu, in the amount of 2 ppm or more. This mixture is used as a starting material. The mixture is heated to a predetermined temperature to make a melt. Then, a seed crystal of BaTiO.sub.3 is brought into contact with the melt under an environment with a low oxygen partial pressure of 0.02 atm. or less. From this state, the above melt is slowly cooled to grow a single crystal on the seed crystal. The thus obtained single crystal is heated in a temperature of 600 .degree. C. or more, under an oxidizing environment with its oxygen partial pressure more than 0.1 atm.

    摘要翻译: 二氧化钛和钡的氧化物或碳酸盐的混合物包括选自V,Cr,Mn,Fe,Co,Ni和Cu中的一种或多种过渡金属元素,其量为2ppm以上。 该混合物用作原料。 将混合物加热至预定温度以使其熔融。 然后,在0.02atm的低氧分压的环境下,使BaTiO 3的晶种与熔体接触。 或更少。 从该状态,将上述熔体缓慢冷却以在晶种上生长单晶。 将得到的单晶在氧分压大于0.1atm的氧化环境下,在600℃以上的温度下加热。

    Bushing in continuous casting dip forming apparatus
    3.
    发明授权
    Bushing in continuous casting dip forming apparatus 失效
    连续铸造浸渍成型设备

    公开(公告)号:US4733716A

    公开(公告)日:1988-03-29

    申请号:US921870

    申请日:1986-10-22

    摘要: There is disclosed a bushing for use in an apparatus for continuously passing a core wire through a crucible holding molten metal to accrete the molten metal on the core wire to form a cast rod. The bushing is connected to the crucible for passing the core wire therethrough into the crucible. The bushing is tubular and has an engaging portion for engaging with the core wire passing therethrough. The engaging portion is made of ceramics material containing a major proportion of at least one selected from the group consisting of zirconia, silicon carbide and silicon nitride.

    摘要翻译: 公开了一种用于连续地将芯线穿过保持熔融金属的坩埚以将芯线上的熔融金属加入以形成浇铸棒的装置的衬套。 衬套连接到坩埚上,以使芯线穿过坩埚。 衬套是管状的并且具有用于与穿过其中的芯线接合的接合部分。 接合部由含有主要比例的选自氧化锆,碳化硅和氮化硅中的至少一种的陶瓷材料制成。

    Method for manufacturing high-conductivity copper-clad steel trolley wire
    5.
    发明授权
    Method for manufacturing high-conductivity copper-clad steel trolley wire 失效
    制造高导线铜线拉杆线的方法

    公开(公告)号:US5087300A

    公开(公告)日:1992-02-11

    申请号:US570792

    申请日:1990-08-22

    IPC分类号: B21B1/16 B21B1/38 B60M1/13

    摘要: First, a steel wire is continuously dipped in molten copper or molten copper alloy so that copper or copper alloy builds up and solidifies on the peripheral surface of said steel wire, thereby obtaining an initial copper-clad steel wire. Then, the initial copper-clad steel wire is subjected to a first cycle of hot rolling by a caliber roll. The hot-rolled wire is dipped in molten copper or molten copper-alloy at least once so that copper or copper alloy builds up and solidifies thereon, thereby obtaining a final copper-clad steel wire.The final copper-clad steel wire is hot-rolled at a temperature of 750.degree. to 850.degree. C. and with a rolling ratio of 10 to 40%. Then, the hot-rolled wire is cold-rolled with a reduction of area of 20% or more.Thus, 75 to 95% of the cross sectional area of the obtained copper-clad steel trolley wire is occupied by the copper or copper alloy covering layer so that the electric conductivity of the trolley wire is as high as 80% IACS or more. Moreover, the cast rod is hot-rolled so that the core and the covering layer are metallurgically bonded to each other, thereby obtaining a copper-clad steel trolley wire whose core and covering layer are firmly bonded. Also, the hot-rolled wire is cold-rolled so that a trolley wire with high strength is obtained.

    Electrode wire for use in electric discharge machining and process for
preparing same
    6.
    发明授权
    Electrode wire for use in electric discharge machining and process for preparing same 失效
    用于放电加工的电极线及其制备方法

    公开(公告)号:US4686153A

    公开(公告)日:1987-08-11

    申请号:US804816

    申请日:1985-12-04

    IPC分类号: B23H7/08 B23K35/10 B23K35/22

    摘要: An electrode wire for wire electric discharge machining a workpiece at high speed and high accuracy and a process for preparing the same are provided. The electrode wire comprises a core wire made of a copper clad steel wire, 10 to 70% of the sectional area of the copper clad steel wire being occupied by copper, and a copper-zinc alloy layer covering the core wire. The copper-zinc alloy layer is prepared by coating the core wire with zinc by electroplating or hot galvanizing, followed by heating to disperse copper in the zinc layer to convert the same into a copper-zinc alloy layer wherein the concentration of zinc is increased gradually along the radially outward direction. The preferable thickness of the copper-zinc alloy layer ranges from 0.1 to 15 microns and the average concentration of zinc in the copper-zinc alloy layer is preferably less than 50% by weight but not less than 10% by weight.

    摘要翻译: 提供了用于电弧放电的高速高精度加工工件的电极线及其制备方法。 电极线包括由铜包钢线制成的芯线,被铜占据的铜包钢线的截面面积的10〜70%以及覆盖芯线的铜 - 锌合金层。 铜锌合金层通过电镀或热镀锌将芯线镀锌,然后加热以将锌分散在锌层中以将其转化成铜锌合金层,其中锌的浓度逐渐增加 沿着径向向外的方向。 铜 - 锌合金层的优选厚度为0.1〜15微米,铜 - 锌合金层中锌的平均浓度优选小于50重量%,但不小于10重量%。

    Device for determining focused state of taking lens
    7.
    发明授权
    Device for determining focused state of taking lens 失效
    用于确定拍摄镜头聚焦状态的装置

    公开(公告)号:US06822801B2

    公开(公告)日:2004-11-23

    申请号:US10479492

    申请日:2003-12-03

    IPC分类号: G02B2714

    CPC分类号: G02B7/36 H04N5/23212

    摘要: A beam splitter (24)for splitting light in a wavelength range of about 500 nm to about 600 nm is arranged in a relay optical system of a taking lens (12). A green light beam reflected from the beam splitter (24) is directed through a relay lens (R3) to a focusing state determination imaging unit (26). The imaging unit (26) comprises three imaging elements (A, B, C) for capturing the directed green light beam to determine the focusing state. Thus, a device for determining the focusing state of the taking lens is provided, in which the green light beam is separated as an object light for determining the focusing state from the object light entering the taking lens (12), so that the focusing state can be determined with high accuracy on the basis of the high-frequency components of the image signal generated by capturing the green light beam by means of the imaging elements (A, B, C) having different optical path lengths.

    摘要翻译: 用于在约500nm至约600nm的波长范围内分裂光的分束器(24)布置在拍摄镜头(12)的中继光学系统中。 从分束器(24)反射的绿色光束被引导通过中继透镜(R3)到聚焦状态确定成像单元(26)。 成像单元(26)包括用于捕获定向绿色光束以确定聚焦状态的三个成像元件(A,B,C)。 因此,提供了一种用于确定拍摄镜头的聚焦状态的装置,其中将绿色光束作为目标光分离,以便从进入拍摄镜头(12)的物体光确定聚焦状态,使得聚焦状态 可以基于通过具有不同光程长度的摄像元件(A,B,C)捕获绿色光束而产生的图像信号的高频分量来高精度地确定。

    Dip forming apparatus for continuously forming cast rod
    8.
    发明授权
    Dip forming apparatus for continuously forming cast rod 失效
    用于连续成型铸棒的浸渍成型装置

    公开(公告)号:US4844147A

    公开(公告)日:1989-07-04

    申请号:US157119

    申请日:1988-02-10

    CPC分类号: C23C2/38 B22D11/008

    摘要: A dip forming apparatus for continuously forming a cast rod includes a furnace for holding molten metal, and a crucible having an open top and a bottom wall. The crucible has a core wire-passing region vertically extending therethrough. The crucible has a hole formed through the bottom wall. A passage connects the furnaces to the core wire-passing region. A device is provided for keeping the molten metal in the furnace at a predetermined level so as to flow the molten metal from the furnace to the core wire-passing region through the passage. A partition wall is disposed in the passage and has a throttling orifice of a predetermined size formed therethrough so as to allow the molten metal to pass therethrough to limit the flow of the molten metal from the furnace to the core wire-passing region. A drive device moves the core wire upwardly at a preselected speed through the hole and the core wire-passing region, so that the molten metal in the core wire-passing region accretes on the core wire to form the cast rod.

    摘要翻译: 用于连续地形成铸棒的浸渍成形装置包括用于保持熔融金属的熔炉和具有开口顶壁和底壁的坩埚。 坩埚具有垂直延伸穿过其中的芯线通过区域。 坩埚具有通过底壁形成的孔。 通道将炉子连接到芯线通过区域。 提供一种用于将炉中的熔融金属保持在预定水平的装置,以使熔融金属从熔炉流过芯线通过区域。 分隔壁设置在通道中并且具有通过其形成的预定尺寸的节流孔,以允许熔融金属通过,从而限制熔融金属从熔炉流到芯线通过区域。 驱动装置通过孔和芯线通过区域以预选速度向上移动芯线,使得芯线通过区域中的熔融金属在芯线上增加以形成铸棒。