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    • 4. 发明专利
    • Embrittlement evaluation method for heat-resistant steel
    • 耐热钢的锻造评估方法
    • JP2011174894A
    • 2011-09-08
    • JP2010041067
    • 2010-02-25
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • YAMAMOTO RYUICHITEZUKA NOBUKAZU
    • G01N17/00G01N3/40G01N33/20
    • PROBLEM TO BE SOLVED: To provide a method for evaluating a state of a heat-resistant steel in which a deposition material is generated while it is used.
      SOLUTION: In the embrittlement evaluation method of the heat-resistent steel, the fine deposition material generated in the to-be-inspected heat-resistent steel is detected, to calculate an area ratio of the detected fine deposition material, and the degree of the embrittlement is evaluated by comparing a calculated value of the area ratio of the fine deposition material with a master curve representing a correlation between a previously-generated embrittlement index and the area ratio of the fine deposition material generated in the heat resistant steel, and by reading the embrittlement index for the calculated area ratio of the fine deposition material.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于评价其使用时产生沉积材料的耐热钢的状态的方法。 解决方案:在耐热钢的脆化评估方法中,检测在待检验的耐热钢中产生的微细沉积材料,以计算检测的细沉积材料的面积比,并且 通过将微细沉积材料的面积比的计算值与表示先前产生的脆化指数与在耐热钢中产生的微细沉积材料的面积比之间的相关性的主曲线进行比较来评价脆化程度, 并通过读出微细沉积材料的计算面积比的脆化指数。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • Thread fastening member and method of manufacturing the same
    • 螺纹紧固件及其制造方法
    • JP2007211932A
    • 2007-08-23
    • JP2006034169
    • 2006-02-10
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • TEZUKA NOBUKAZUHIROKAWA KAZUHARUIHARA KEISUKETORIGOE TAIJIISHIKAWA HIROSHIYAMAMOTO RYUICHIHASHIMOTO YUKIHIRO
    • F16B33/06F16B33/04
    • PROBLEM TO BE SOLVED: To solve by providing on surface of a male thread or/and surface of at least female thread a surface soft coating portion of which hardness is lower than that of a matrix because there is limitation to improve fatigue strength of an engaging part of the male thread with the female thread with a conventional thread fastening member.
      SOLUTION: The thread fastening member provides on either at least of the surface of the male thread 10 or the surface of the female thread 20 the surface soft coating portion 21 of which hardness is lower than that of the matrix. As a result, it can restrain occurrence of eccentric contact and local high stress in the engaging part at which the male thread 10 of a bolt 1 and the female thread 20 of a nut 2 engage with each other. Thereby, since the thread fastening member can improve the fatigue strength of the engaging part of the male thread 10 of the bolt 1 with the female thread 20 of the nut 2, it is effective to be used in such a portion that repeated stress occurs on the engaging part of the male thread 10 of the bolt 1 with the female thread 20 of the nut 2.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了通过在至少内螺纹的外螺纹或/和表面的表面上提供硬度低于基体的表面软涂层部分,因为有改善疲劳强度的限制 外螺纹与内螺纹的接合部分与传统的螺纹紧固构件相连接。 解决方案:螺纹紧固构件至少提供外螺纹10的表面或阴螺纹20的表面,表面软涂层21的硬度低于基体的硬度。 结果,能够抑制螺栓1的外螺纹10和螺母2的内螺纹20彼此接合的接合部中的偏心接触和局部高应力的发生。 因此,由于螺纹紧固构件能够提高螺母1的阳螺纹10的接合部与螺母2的内螺纹20的疲劳强度,因此有效地用于在重复应力发生的部分 螺栓1的外螺纹10与螺母2的内螺纹20的接合部分。(C)2007,JPO&INPIT
    • 7. 发明专利
    • Back shield welding method and welded structure using the same
    • 使用相同的背板焊接方法和焊接结构
    • JP2013119108A
    • 2013-06-17
    • JP2011268927
    • 2011-12-08
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • KAWASAKI KENJIYAMAMOTO RYUICHINISHIMOTO SHINKAWAGUCHI SEIICHI
    • B23K9/035B23K9/00B23K9/16B23K33/00F01D5/06F01D25/00
    • B23K31/02B23K9/028B23K9/16B23K9/325B23K33/006B23K35/383B23K2201/001F01D5/02F01D25/34F05D2220/31F05D2230/232Y10T403/478
    • PROBLEM TO BE SOLVED: To easily perform back shielding to improve welding quality by supplying inert gas from the surface side of a welded joint part to the rear face side without causing the occurrence of a welding defect or the degradation in joint performance, in a welded structure to which it is difficult to perform back shielding.SOLUTION: This back shield welding method includes: forming notches 21, 22 in the abutting edges 15, 16 of two welding base materials 2, 3 so that the front face side and rear face side of the welding base materials 2, 3 communicate with each other and that a slit-like gas supply opening 17 extending along the formed direction of a weld bead is formed between the two abutting welding base materials 2, 3; allowing the abutting edges 15, 16 of the welding base materials 2, 3 to abut on each other to temporarily fix them, thereby forming the gas supply opening 17 by the notches 21, 22; and forming the weld bead while supplying inert gas from the gas supply opening 17 and blocking the gas supply opening 17 with the weld bead.
    • 要解决的问题:为了容易地进行背面屏蔽以通过从焊接接头部分的表面侧向后表面侧供给惰性气体来提高焊接质量,而不会引起焊接缺陷的发生或接合性能的劣化, 在难以进行背面屏蔽的焊接结构中。 解决方案:该背面屏蔽焊接方法包括:在两个焊接基材2,3的邻接边缘15,16中形成凹口21,22,使得焊接基材2,3的前表面侧和背面侧 在两个邻接的焊接基材2,3之间形成沿着焊道的形成方向延伸的狭缝状气体供给口17, 使焊接基材2,3的抵接边缘15,16彼此抵接以暂时固定,由凹口21,22形成气体供给口17。 在从气体供给口17供给惰性气体的同时形成焊道,并且用焊道阻挡供气口17。 版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Embrittlement degree determination method
    • EMBRITTLEMENT DEGREE确定方法
    • JP2010230637A
    • 2010-10-14
    • JP2009081585
    • 2009-03-30
    • Mitsubishi Heavy Ind Ltd三菱重工業株式会社
    • FUKUSHIMA HIROAKIYAMAMOTO RYUICHIKADOYA YOSHIKUNITEZUKA NOBUKAZU
    • G01N17/00G01N29/09G01N33/20
    • PROBLEM TO BE SOLVED: To provide an embrittlement degree determination method of non-destructively evaluating the embrittlement degree of 9-12% Cr steel after long-term use in a low temperature region (300-450°C).
      SOLUTION: This embrittlement degree determination method includes a process of measuring the amount of precipitate of carbonitride of a measuring object based on the area ratio of the precipitate in a grain boundary in tissue observation of the grain boundary, a process of preparing a master curve showing the relationship between the amount of precipitate of the carbonitride and the embrittlement degree, and a process of determining the embrittlement degree referring to the master curve from the amount of precipitate of the carbonitride.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种在低温区域(300-450℃)长期使用后不破坏性地评价9-12%Cr钢的脆化度的脆化度测定方法。 解决方案:该脆化度测定方法包括基于晶界的组织观察中的晶界中的析出物的面积比,测定被测量物质的碳氮化物的析出量的方法, 显示了碳氮化物的沉淀量与脆化程度之间的关系的主曲线,以及根据碳氮化物的沉淀量根据主曲线确定脆化程度的方法。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • Ni-BASED AUSTENITIC SUPERALLOY WITH LOW THERMAL EXPANSION AND MANUFACTURING METHOD THEREFOR
    • 具有低热扩张性的镍基奥氏体超级合金及其制造方法
    • JP2003013161A
    • 2003-01-15
    • JP2001195741
    • 2001-06-28
    • Daido Steel Co LtdMitsubishi Heavy Ind Ltd三菱重工業株式会社大同特殊鋼株式会社
    • YAMAMOTO RYUICHIKADOYA YOSHIKUNIUMAGOE RYUTARONODA TOSHIHARUISOBE SUSUMUOKABE MICHIOKAWAI HISATAKA
    • F16J12/00C22C19/05
    • PROBLEM TO BE SOLVED: To provide a Ni-based austenitic superalloy with a low thermal expansion, having a coefficient of thermal expansion equal to that of a ferrite-based 12Cr steel, and high-temperature strength and corrosion/oxidation resistance equal to that of an austenite-based heat resistant alloy.
      SOLUTION: This super alloy includes carbon 0.15 mass% or less, silicon 1 mass% or less, manganese 1 mass% or less, chromium 5-20 mass%, molybdenum 17-26 mass%, aluminum 0.1-2.0 mass%, titanium 0.1-2.0 mass%, iron 10 mass% or less, boron 0.02 mass% or less, zirconium 0.2 mass% or less, tungsten, rhenium, and the balance substantially nickel, while the sum of aluminum and titanium content is 1-5.5 atom.%, satisfying the expression: 17≤Mo+(W+ Re)/2≤27, where Mo indicates a molybdenum content by mass%, W indicates a tungsten content by mass%, and Re indicates a rhenium content by mass%. The super alloy, further has a structure, in which a γ'-phase consisting of intermetallic compounds, and a A
      2 B-phase consisting of intermetallic compounds, form composite precipitates.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供具有与铁素体系12Cr钢的热膨胀系数相当的热膨胀系数的具有低热膨胀系数的Ni基奥氏体超耐热合金,以及高温强度和耐腐蚀/抗氧化性等于 奥氏体型耐热合金。 解决方案:该超合金包括0.15质量%以下的碳,1质量%以下的硅,1质量%以下的锰,5〜20质量%的铬,17〜26质量%的铬,0.1〜2.0质量%的铝,0.1质量% -2.0质量%,铁10质量%以下,硼0.02质量%以下,0.2质量%以下的钨,铼,余量基本上为镍,铝和钛的总和为1-5.5原子。 %,满足以下表达式:17 <= Mo +(W + Re)/ 2 <= 27,其中Mo表示以质量%计含有的钼含量,W表示钨质量%,并且Re表示铼含量以质量%计。 超合金还具有由金属间化合物构成的γ'相和由金属间化合物构成的A2B相形成复合析出物的结构。