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    • 1. 发明授权
      US3861883A Method of making welded joints for large vessels subject to hydrogen embrittlement 失效
    • Method of making welded joints for large vessels subject to hydrogen embrittlement
    • 制造大型水箱焊接接头的方法
    • US3861883A
    • 1975-01-21
    • US24763472
    • 1972-04-26
    • MITSUBISHI HEAVY IND LTD
    • UTO YOSHIMITSU , IWASAKI YASUHIRO , YAMAMOTO YOSHIHIRO , OOE TSUTOMU , NAKAYAMA RYOHEI
    • B21D51/24 , B23K33/00 , B23P3/00
    • B21D51/24 , B23K33/004 , Y10S220/29 , Y10S428/925 , Y10S428/926 , Y10T428/12653 , Y10T428/12937 , Y10T428/12965
    • A welded joint construction is provided for large vessels, e.g., reaction vessels or tanks, having inner surfaces subject to hydrogen embrittlement and having a pair of multilayer laminated walls arranged to form a special weld joint. This joint is made by having a first metal cladded on at least a portion of the opposing edges of the weld joint and extending from the inner surface of the vessel subject to hydrogen embrittlement toward the opposite surface of the vessel. The first metal is (a) only slightly hardenable by the heat of welding, (b) resistant to hydrogen embrittlement, and (c) annealed prior to the welding of the joint. A quantity of the first metal weld is deposited between and joining the opposed faces of said first metal cladded on the edges of the weld joint. The welding of the joint is completed by depositing a second metal, which is only slightly hardenable by welding heat, between the opposed edges of the joint and extending from the first metal weld deposited therein toward the opposite outer surface of the vessel. At least one of the pair of walls which are joined consists of a plurality of layers of metal sheets (e.g., Cr-Mo or Mo steel) forming the exterior of the vessel, and an inner sheet forming the inner surface of the vessel which is made of steel rsistant to hydrogen embrittlement. Generally, the outer layer of sheets are only mechanically placed together without metallurgical joining, and also a plurality of vents are provided extending through these layers to the inner sheet''s outer surface. The method joins such walls without necessity of annealing, and is especially useful in large vessels which cannot be annealed after fabrication by welding.
    • 为具有经受氢脆化的内表面的大容器，例如反应容器或罐提供焊接接头结构，并且具有一对多层层压壁，以形成特殊的焊缝。 该接头通过在焊接接头的相对边缘的至少一部分上包覆的第一金属制成，并且从容器的内表面向容器的相对表面延伸。 第一种金属是（a）仅由焊接热量稍微硬化，（b）耐氢脆性，和（c）在焊接焊接之前进行退火。 第一金属焊缝的一部分沉积在焊接接头的边缘上的所述第一金属的相对面之间并与之接合。 接头的焊接是通过在接合的相对边缘之间沉积第二个金属，该第二金属只能通过焊接加热轻微固化，并从其中沉积的第一个金属焊道朝向容器的相对的外表面延伸。 连接的一对壁中的至少一个由形成容器外部的多层金属板（例如，Cr-Mo或Mo钢）和形成容器内表面的内层组成 由钢铁制成的氢脆化。 通常，外层的机械仅机械地放置在一起而不进行冶金连接，并且还提供了多个通过这些层延伸到内层的外表面的排气口。 该方法连接这些壁而不需要退火，并且在通过焊接制造后不能退火的大型容器中特别有用。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 2. 发明授权
      US3565275A Hydrogen embrittlementproof vessel of layer 失效
    • Hydrogen embrittlementproof vessel of layer
    • 氢化层织物
    • US3565275A
    • 1971-02-23
    • US3565275D
    • 1967-09-29
    • MITSUBISHI HEAVY IND LTD
    • UTO YOSHIMITSU , IWASAKI YASUHIRO
    • B01J3/04 , B21D51/24 , F17C1/04 , B65D7/42 , B65D25/00 , F17C1/10
    • F17C1/04 , B01J3/048 , B21D51/24 , F17C2201/0104 , F17C2203/0624 , F17C2203/0639 , F17C2203/0648 , F17C2209/221 , F17C2209/232 , F17C2221/012 , F17C2223/0123 , F17C2260/042 , F17C2260/053 , Y02E60/321 , Y10S220/901
    • A multilayered pressure vessel for handling hydrogen gas wherein the inner layer of the vessel is formed of a material resistant to hydrogen embrittlement. Individual sections of the inner layer and of the outer layers are welded together at circular joints. The welded joint for the inner layer is formed of a material which is resistant to hydrogen embrittlement, however, the weld material joining the outer layers is not resistant to hydrogen embrittlement. In constructing the vessel the welded joints securing the outer layers are displaced from and are out of contact with the welded joint securing the individual sections of the inner layer. Additionally, outlet holes extend from the outer surface of the vessel through each of the outer layers to the outer surface of the inner layer. The outlet holes are located in the area adjacent the welded joint securing the individual sections of the outer layers. Where the inner layer is secured to the outer layers as the final step in constructing the pressure vessel, a hole is bored through the innermost of the outer layers extending from the outer surface of the inner layer to the inner surface of the next outer layer. Further, where a solid flange member is secured at one or both ends of the vessel the welded joint securing the flange to the inner layer and the welded joint securing the flange to the outer layers are spaced from one another so that they are not in contact and outlet holes are provided in the region of the welded joint securing the flange to the outer layers. In the outlet holes hydrogen gas at the interface between the inner layer and the innermost of the outer layers is prevented from diffusing into the deposited metal and the outer layers of the vessel are protected from failures due to hydrogen embrittlement.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 9. 发明专利
      GB1198700A Method of Producing a Casting Having a Surface Layer. 未知
    • Method of Producing a Casting Having a Surface Layer.
    • GB1198700A
    • 1970-07-15
    • GB4551667
    • 1967-10-05
    • MITSUBISHI HEAVY IND LTD
    • UTO YOSHIMITSU , YAMASAKI DAIZO , KITAJIMA HYOMA , SHIRAI HISASHI , KUMAMI YOZO
    • B22D15/00 , B22D19/08
    • 1,198,700. Casting composite articles; mouldlining materials. MITSUBISHI JUKOGYO K.K. 5 Oct., 1967, No. 45516/67. Heading B3F. In a method of producing a casting having a surface layer of different composition than the remainder, e.g. a corrosion resistant, an abrasion resistant, or an oxidation resistant layer, or a bearing surface, a mixture containing the powder of a metal or alloy is mixed with a binder and solvent and introduced into a mould 2 as a layer 4 on the surface of the mould cavity 3, molten metal is then poured into the cavity 3 either to alloy with the metal powder or to embed the particles in the cast metal. The mixture may contain an exothermic material and the binder may be a synthetic resin, paraffin, starch, or other organic binder, and the solvent may be methyl alcohol, acetone, or water. The powdered metal may include one or more of the elements Cr, Al, Ni, Si, Mn, C, N, Mo, W, Co, V, Zr, Nb and Pb, and the casting metal may be steel, cast iron, copper or copper alloy. A number of specific examples are described. The method may be used in connection with centrifugal casting, pressure casting with bottom pressure pouring, and vacuum casting. The mixture forming the layer 4 may also include oxides, carbides, nitrides, e.g. Al 2 O 3 , ZrO, Cr 2 O 3, TiC, AIN.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
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