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    • 91. 发明专利
    • LASER WORKING APPARATUS
    • JPS55117587A
    • 1980-09-09
    • JP2447379
    • 1979-03-05
    • HITACHI LTD
    • INAGAKI MASATOSHIJINBOU RIYUUTAROUUNNO TOMIOSHIDA TOMOHIKOIKEMOTO NORIO
    • B23K26/06B23K26/073C21D1/09C21D1/34
    • PURPOSE:To obtain the laser light of an even energy density distribution with the compact constitution of less number of reflecting mirrors by forming the reflecting mirror surface for laser condensing into the curved face comprising moving the polygonal line of the specified angle parallel along the quadratic curve orthogonal to this and being concave to the concave part side thereof. CONSTITUTION:At the time of working, particularly heat-treating the work by radiating laser light, a reflecting mirror which condenses laser light onto the work is made into the intersecting quadratic reflecting mirror. More specifically, the concave curved face made when the polygonal line CO1D is moved parallel along the curve O1O2 being part of an ellipse is made reflecting surface. When this reflecting mirror 51 is tilted to a certain angle from the horizontal plane and laser light 9 of TEMOO mode is perpendicularly entered, a slender condensed part 52 is obtained. When the work is placed here and is moved, the heat treatment of even depth and high heat efficiency may be done. Combining the intersecting linear curved surface reflecting mirror and a concave mirror having the curvature of guadratic curves is equally well.
    • 93. 发明专利
    • SURFACE ALLOYING METHOD BY LASER BEAM
    • JPS5541923A
    • 1980-03-25
    • JP11357478
    • 1978-09-18
    • HITACHI LTD
    • INAGAKI MASATOSHIJINBOU RIYUUTAROUSHIDA TOMOHIKOCHIKAZAKI MITSUO
    • C23C2/28C23C26/02
    • PURPOSE:To perform captioned alloying with additive element having high reflectance to laser beam or having lower melting point than the base metal, by radiating laser beam after forming a pretreated layer composed of additive element and base metal or mixture of additive element and component contained in base metal on the base metal surface. CONSTITUTION:A layer composed of mixture of additive element 10 and base metal 3, or mixture of additive element 10 and base metal component 11 is formed on the surface of a base metal 3, which is a pure metal or an alloy. Laser beam 1 is radiated to this pretreated layer. First, the base metal component 11 having a high beam absorption rate is melted, and then the additive element 10 is melted by heat conduction. Thus, an alloy molten part 12 composed of element 10 and component 11 is formed. Since the element 10 is alloyed with the component 11, the low melting point element 10 will never selectively scatter and evaporate. When heating is further continued, the pretreated layer is completely melted, and the alloy 12 is formed on the surface of the base metal 3.
    • 95. 发明专利
    • Circumferential multilayer sequence welding method, and automatic welding equipment
    • 循环多层次焊接方法及自动焊接设备
    • JP2005095915A
    • 2005-04-14
    • JP2003330899
    • 2003-09-24
    • Hitachi Ltd株式会社日立製作所
    • IMANAGA AKIYOSHIHANEDA MITSUAKIKOIDE HIROOTSUJIMURA HIROSHIINAGAKI MASATOSHI
    • B23K9/167B23K9/02B23K9/028B23K9/09B23K9/095B23K9/127
    • PROBLEM TO BE SOLVED: To obtain defect-free, smooth and excellent circumferential weld bead by the pulse arc welding or DC arc welding using non-consumable electrode on a groove joint of thick tubular members in which bead joint for each multilayer sequence welding and each welding pass is required. SOLUTION: The welding starting position Xs1 of the first pass of an initial layer is set to the same position as the pre-taught torch reference position X0, and each welding starting position from the second pass to the N-th pass of the final layer is set to the position advanced or retracted by the specified angle α1 or by the specified distance L1 in the direction of the weld line from the torch reference position X0. On the completion side of the bead joint part of the circumferential welding, each welding completion position from the first pass of the initial layer to the N-th pass of the final layer is set to the position advanced by the starting/terminating end overlapping length Ce or by the specified angle α2 from the position making one round in the direction of the weld line from each welding starting position. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:通过脉冲电弧焊或使用不消耗电极在厚管状部件的槽接头上的直流电弧焊获得无缺陷,平滑和优异的圆周焊缝,其中每个多层序列的珠接头 需要焊接和焊接。

      解决方案:将初始层的第一遍的焊接起始位置Xs1设定为与预先教导的炬基准位置X0相同的位置,并且从第二次通过到第N次通过的每个焊接开始位置 最终层被设定为在焊炬基准位置X0的焊接方向前进或缩回指定角度α1或指定距离L1的位置。 在周向焊接的胎圈接合部的完成侧,从初始层的第一遍到最后层的第N次通过的每个焊接完成位置被设定为以起始/终止重叠长度前进的位置 Ce或者从焊接起始位置沿从熔接线方向一个位置的规定角度α2。 版权所有(C)2005,JPO&NCIPI

    • 97. 发明专利
    • Method for connecting metal glass
    • 连接金属玻璃的方法
    • JP2003285170A
    • 2003-10-07
    • JP2002087345
    • 2002-03-27
    • Hitachi Ltd株式会社日立製作所
    • OKAMOTO KAZUTAKAHIRANO SATOSHIINAGAKI MASATOSHIAONO YASUHISA
    • B23K20/12B23K20/14C22C45/10
    • PROBLEM TO BE SOLVED: To provide a method for connecting a metal glass in good quality without bringing about a crystal phase.
      SOLUTION: The method for connecting the metal glass comprises the steps of: inserting a rotating probe 1 having a large-diameter shoulder 2 and a small- diameter pin 3 protruding in an axial direction into the glass of a material 4 to be connected in a method for connecting the material 4 to be connected and made of the metal glass, setting a temperature region for developing low viscosity characteristics of a supercooling liquid region (ΔTx) peculiar for the metal glass of a glass transition temperature (Tg) to a crystallizing temperature (Tx) of the material to be connected at a highest achievable temperature (Tw) of the material to be connected near the pin by a frictional force of the shoulder with the material, and moving the probe along a connecting line to connect the metal glass. Thus, the metal glass having excellent various characteristics without having in a metal material or an amorphous material so far can be connected without impairing the various characteristics.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种在不产生晶相的情况下以良好的质量连接金属玻璃的方法。 解决方案:用于连接金属玻璃的方法包括以下步骤:将具有沿轴向突出的大直径肩部2和小直径销3的旋转探针1插入材料4的玻璃中 在将金属玻璃连接材料4连接起来的方法中,将玻璃化转变温度(Tg)的金属玻璃特有的过冷却液体区域(ΔTx)的低粘度特性的温度区域设定为 要通过肩部与材料的摩擦力在待连接的材料的最高可实现温度(Tw)处连接的材料的结晶温度(Tx),并且沿着连接线移动探头以连接 金属玻璃。 因此,可以在不损害各种特性的情况下连接具有优异的各种特性而不具有金属材料或非晶材料的金属玻璃。 版权所有(C)2004,JPO
    • 99. 发明专利
    • HEAT DISSIPATION BOARD AND PRODUCTION THEREOF
    • JPH1197593A
    • 1999-04-09
    • JP25641897
    • 1997-09-22
    • HITACHI LTD
    • GOTO SUMITAKAKAMOSHITA RIKUOKANEDA JUNYAINAGAKI MASATOSHITAKASE IWAO
    • C22C49/00C22C9/00H01L23/12H01L23/373C22C1/09
    • PROBLEM TO BE SOLVED: To suppress residual thermal stress due to mounting of a semiconductor device through an insulating board by setting the thermal conductivity in the thickness direction of a heat dissipation board at a specified value or above and further setting the thermal conductivity at a specified value or above and the coefficient of thermal expansion in the plate surface direction at a specified value or below using carbon fibers having high thermal conductivity. SOLUTION: A heat dissipation board 3 being set on a metallic support plate 1 through an insulating board 2 is composed of a composite maternal of carbon fiber and copper principally comprising copper matrix and containing a carbon fiber filter and one or more than one kind of additional element of Ti, Cr, Zr or Hf. Coefficient of thermal expansion in the plate surface direction of the heat dissipation board 3 is set at 10×10 / deg.K or below and thermal conductivity in the thickness direction thereof is set at 150 W/m deg.K or above. When carbon fibers having high thermal conductivity are employed, thermal conductivity in the thickness direction of the heat dissipation board 3 is set at 200 W/m deg.K or above. According to the arrangement, residual stress due to mounting of the semiconductor device 5 through the insulating board 2 can be suppressed.